CN115068844B

CN115068844B - Verification phantom and verification device for radiotherapy system

Info

Publication number: CN115068844B
Application number: CN202210842654.3A
Authority: CN
Inventors: 王雯; 闫浩; 苟天昌; 李金升; 李久良; 高凡
Original assignee: Our United Corp
Current assignee: Our United Corp
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2025-02-21
Anticipated expiration: 2039-02-21
Also published as: CN115068844A; CN111588996A; CN111588996B

Abstract

The invention provides a verification die body which is provided with a slot, wherein the slot is used for placing a film, the slot comprises a first slot and a second slot, an opening of the first slot and an opening of the second slot are both positioned on a first outer surface of the verification die body, and an extraction groove is arranged at the juncture of the opening of the first slot and the opening of the second slot on the first outer surface. The invention also provides a verification device of the radiotherapy system.

Description

Verification die body and verification device of radiotherapy system

The application relates to a split application of China application with the application date of 2019, 2-month and 21-date, the application number of 201980000893.0 and the name of 'radiation therapy system, verification device and verification method'.

Technical Field

The invention relates to the technical field of radiotherapy, in particular to a verification device for verifying a die body and a radiotherapy system.

Background

The radiation therapy system can generally include a rotating gantry and a treatment head disposed on the rotating gantry. The radiation emitted from the treatment head can be used for treating the target point of the affected part of the patient. Normally, the beam focus (i.e. the treatment isocenter) of the radiation emitted from the treatment head should coincide with the mechanical rotation isocenter of the rotating gantry. When the target point is positioned to the position of the mechanical rotation isocenter, the beam focus can be accurately irradiated to the target point, so that accurate treatment is realized. However, due to installation errors and other reasons, deviation may occur between the therapeutic isocenter and the mechanical rotation isocenter, and if the target point is located at the mechanical rotation isocenter, the beam focus may not be accurately irradiated to the position of the target point, so that accurate therapy cannot be realized.

In the related art, in order to secure the accuracy of radiotherapy, a verification device such as a MIMI Phantom (MIMI Phantom) for verifying the deviation of a therapeutic isocenter from a mechanical rotation isocenter is provided. Before radiation therapy is carried out, the verification device can be used for verifying whether the treatment isocenter coincides with the mechanical rotation isocenter (namely, whether deviation exists or not), and when deviation exists between the treatment isocenter and the mechanical rotation isocenter, the position of the treatment bed can be timely adjusted according to the deviation, and the coincidence precision of the mechanical rotation isocenter and the equipment isocenter is improved.

However, the verification device in the related art can only verify whether the mechanical rotation isocenter and the equipment isocenter coincide, so that the function is single.

Disclosure of Invention

The application provides a verification device for verifying a die body and a radiation therapy system. The technical proposal is as follows:

In one aspect, a verification die body is provided, the verification die body is provided with a slot, the slot is used for placing a film, the slot comprises a first slot and a second slot, the opening of the first slot and the opening of the second slot are both positioned on a first outer surface of the verification die body, and an extraction groove is formed at the juncture of the opening of the first slot and the opening of the second slot on the first outer surface.

Optionally, the extraction groove is communicated with both the first slot and the second slot.

Optionally, an intersection point of the opening of the first slot and the opening of the second slot is located at a center position of the first outer surface.

Optionally, the extraction groove is located at a center position of the first outer surface.

Optionally, the first slot is perpendicular to the second slot, and the first slot and the second slot both pass through a center point of the verification die body.

Optionally, the cross section of the extraction groove is circular, rectangular or triangular.

Optionally, the verification die body is provided with a first through hole for conducting the outer surface of the verification die body with the first slot, and a second through hole for conducting the outer surface of the verification die body with the second slot.

Optionally, the extending direction of the first through hole intersects with the first slot, and the intersection point of the first through hole and the first slot is the center point of the verification die body, and the extending direction of the second through hole intersects with the second slot, and the intersection point of the second through hole and the second slot is the center point of the verification die body.

Optionally, the first through hole is formed in one side surface of the verification die body, and the second through hole is formed in the top surface of the verification die body.

Optionally, the extending direction of the first through hole is perpendicular to the first slot, and the extending direction of the second through hole is perpendicular to the second slot.

Optionally, the verification die body is of a solid structure.

Optionally, the verification die body is in a cube or prism shape.

Optionally, the shell of the verification die body is made of organic glass.

In another aspect, there is provided a verification device for a radiation therapy system, the verification device comprising a verification phantom as described in the previous aspect.

In summary, the embodiments of the present invention provide a verification device for verifying a phantom and a radiation therapy system. The opening of the first slot and the opening of the second slot in the verification die body can be both positioned on the first outer surface of the first verification die body, and the film can be conveniently inserted and taken by arranging the openings of the two slots on the same outer surface.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a verification device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first verification module in a verification device according to an embodiment of the present invention;

FIG. 3 is a side view of a first verification die body in a verification apparatus provided in an embodiment of the invention;

FIG. 4 is a schematic structural view of a second verification module in a verification apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic view of another structure of a second verification module in a verification apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a third verification module in a verification apparatus according to an embodiment of the present invention;

FIG. 7 is a side view of a verification device provided in an embodiment of the invention;

FIG. 8 is a top view of a verification device provided by an embodiment of the present invention;

FIG. 9 is a left side view of a verification device provided in an embodiment of the invention;

FIG. 10 is a flow chart of a method of a first verification process provided by an embodiment of the present invention;

FIG. 11 is a flow chart of a method of a second verification process provided by an embodiment of the present invention;

FIG. 12 is a flow chart of a method of a second verification process provided by an embodiment of the present invention;

fig. 13 is a block diagram of a first verification module in a verification apparatus according to an embodiment of the present invention;

Fig. 14 is a block diagram of a second verification module in a verification apparatus provided in an embodiment of the present invention;

Fig. 15 is a block diagram of a third verification module in a verification apparatus according to an embodiment of the present invention.

Specific embodiments of the present invention have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a verification device of a radiation therapy system according to an embodiment of the present invention. As shown in fig. 1, the authentication device may include at least two authentication mold bodies among a first authentication mold body 10, a second authentication mold body 20, and a third authentication mold body 30. For example, the verification apparatus shown in FIG. 1 includes a first verification die body 10, a second verification die body 20, and a third verification die body 30.

Referring to fig. 1, the first verification die body 10 has a slot 101 for receiving a film. The second verification die body 20 may be provided at a center thereof with a first positioning member 40. A second detent 50 may be provided at the center of the third verification die body 30. Also, the center point of the first verification die body 10, the center point of the first positioning member 40, and the center point of the second positioning member 50 may be coaxial, i.e., the center point of the first verification die body 10, the center point of the first positioning member 40, and the center point of the second positioning member 50 may be located on the same axis. For example, the axis X shown in fig. 1.

Alternatively, both the first verification phantom 10 and the third verification phantom 30 may be used to verify the deviation between a treatment isocenter, which may also be referred to as a nuclear physical isocenter, and a mechanical rotation isocenter. The second verification phantom 20 may be used to at least one of verify the deviation of the mechanical rotational isocenter, calibrate geometric parameters (e.g., detect if the laser light position is deviated, verify the installation error of the image acquisition assembly, etc.), and verify the accuracy of the image-guided placement.

When the verification device comprises a first verification die body and a second verification die body or a second verification die body and a third verification die body which can realize different functions, or the first verification die body, the second verification die body and the third verification die body, the verification device can only realize a single function compared with the verification device in the related technology, and the functions are richer. When the authentication device includes the first authentication die body and the third authentication die body that realize the same function, the reliability of the authentication deviation by the authentication device is higher. Moreover, by using the verification device in advance to verify the deviation between the treatment isocenter and the mechanical rotation isocenter, or to verify the deviation of the mechanical rotation isocenter, to detect whether the deviation occurs in the position of the laser lamp, to verify the installation error of the image acquisition component and to verify the accuracy of image guiding positioning, the patient can be accurately positioned according to the verification result during radiotherapy, and the reliability of radiotherapy is improved.

In addition, since the first verification body 10 has the insertion groove 101 for placing the film, when the deviation of the treatment isocenter from the mechanical rotation isocenter is verified using the first verification body 10, the film is simply inserted into the insertion groove 101. Compared with the prior art that the film is required to be inserted into the film box first and then the film box with the inserted film is put into the verification die body, the verification device provided by the invention is more convenient to operate. Also, since the film cartridge having the film inserted therein in the related art is required to be extracted from the verification die body a plurality of times, there may be abrasion between the film cartridge and the verification die body after long-term use, and the abrasion may affect the accuracy of detecting deviation of the center point of the treatment. Therefore, the reliability of the verification device provided by the invention is higher. Moreover, by integrating a plurality of functions into the second verification die body 20, the production cost can be saved on the premise of enriching the functions of the verification device.

It should be noted that, the verification device of the radiation therapy system provided in the embodiment of the present invention may include, in addition to at least two verification modules of the first verification module, the second verification module, and the third verification module, other verification modules, which may be the same verification module as the first verification module, the second verification module, or the third verification module, or may be other types of verification modules.

In summary, the embodiments of the present invention provide a verification device for a radiation therapy system. The verification device comprises at least two verification die bodies of a first verification die body, a second verification die body and a third verification die body which can realize different functions, so that the verification device has more functions. Compared with the verification device which can only realize a single function in the related art, the verification device provided by the invention has more abundant functions.

Alternatively, in an embodiment of the present invention, the radiation therapy system can include a control host, an image server, an image acquisition assembly, a laser light, a radiation source, a treatment couch, and a scanner. The control host may include an upper computer and a lower computer. The image acquisition component can comprise a bulb tube and a detector which is arranged opposite to the bulb tube, and can also comprise a detector which is arranged opposite to the radioactive source, and of course, the detector which is arranged opposite to the bulb tube and the detector which is arranged opposite to the radioactive source can be the same detector. The image server may also be connected to the control host or the image server may be integrated directly into the control host. The laser lamp may be a cross-hair laser lamp (i.e., the radiation emitted by the laser lamp is cross-shaped radiation).

Wherein the radiation source may emit radiation (e.g., gamma or X-rays) to the first verification phantom 10 and the third verification phantom 30, and the image acquisition assembly may include a bulb that emits radiation to the second verification phantom 20. After the radiation source emits radiation to the first verification phantom 10, the treating physician may remove the film from the first verification phantom 10 and scan the irradiated film with a scanner, thereby causing the focal spot formed on the film to appear. The treating physician may then upload the image containing the focal spot to the imaging server. After the radiation source emits radiation to the third verification phantom 30, a detector disposed opposite the radiation source may receive the radiation emitted by the radiation source and collect an image based on the radiation. After the bulb emits radiation to the second verification phantom 20, a detector disposed opposite the bulb may receive the radiation emitted by the radiation source and collect an image based on the radiation. The detector may then send the acquired image to the imaging server. The imaging server may analyze the acquired image (e.g., determine coordinates of a center point of the received image, and determine deviations of the treatment isocenter and the mechanical rotation isocenter), and send the analysis results to the control host. The control host can directly adjust the position of the treatment bed according to the analysis result (such as deviation).

Optionally, fig. 2 is a schematic structural diagram of a first verification die body in the verification device according to the embodiment of the present invention. As shown in FIG. 2, the slots 101 of the first verification body 10 may include a first slot 1011 and a second slot 1012. The first slot 1011 may have an insertion surface perpendicular to the insertion surface of the second slot 1012, and the center point of the insertion surface of the first slot 1011 and the center point of the insertion surface of the second slot 1012 may coincide with the center point of the first verification body 10.

When the first verification phantom 10 is used to verify the deviation of the treatment isocenter from the mechanical rotation isocenter, a film may be first inserted into the first slot 1011, the center of the first verification phantom 10 in the verification phantom may be aligned with the mechanical isocenter, then the radiation source (the initial rotation angle of the gantry may be 0 degrees) irradiates the first verification phantom 10, so as to form a focal spot on the film inserted into the first slot 1011, the treating physician takes out the film inserted into the first slot 1011, and then another film is inserted into the second slot 1012, the radiation source (the rotation angle of the gantry may be 90 degrees) irradiates the first verification phantom 10, so as to form a focal spot on the film inserted into the second slot 1012, and the treating physician may take out the film inserted into the second slot 1011. The two films are scanned by a scanner to obtain two images containing a focal spot. The treating physician may then upload the two images containing the focal spot to the imaging server. Since the beam focus of the radiation source and the mechanical isocenter are theoretically coincident, the image server can obtain the actual coordinates of the beam focus according to analysis of the two images containing the focal spot, and determine the deviation of the treatment isocenter and the mechanical rotation isocenter according to the actual coordinates of the beam focus and the coordinates of the mechanical isocenter. The image server can then send the deviation to the control host, so that the control host adjusts the position of the treatment bed according to the deviation. In addition, the control host can store the deviation and accurately position the patient according to the deviation in the radiotherapy process.

Alternatively, referring to FIG. 2, the opening K1 of the first slot 1011 and the opening K2 of the second slot 1012 may each be located on the first exterior surface M1 of the first verification die body 10.

By arranging the openings of the two slots on the same outer surface, the film can be conveniently inserted and taken.

Alternatively, referring to fig. 3, on the first outer surface M1, an extraction groove a may be provided at an interface of the opening K1 of the first slot 1011 and the opening K2 of the second slot 1012.

In the embodiment of the present invention, the extraction groove a may be a groove recessed toward the intersection point of the two slots. And, the extraction groove a may communicate with both the first slot 1011 and the second slot 1012. From this extraction recess a the treating physician can insert or extract film. By providing the extraction groove a on the first outer surface M1, which is respectively connected to the two slots, it is more convenient for the treating physician to insert and take the film.

Alternatively, referring to fig. 3, the cross section of the extraction groove a may be circular, or the cross section of the extraction groove a may be other shapes, such as rectangular or triangular. Wherein the cross-section is a plane parallel to the first outer surface M1.

Alternatively, the extraction groove a may be provided at the intersection position of the first slot 1011 and the second slot 1012 on the first outer surface M1. For example, when the intersection of the first slot 1011 and the second slot 1012 is located at the center of the first outer surface M1, the extraction groove a may be disposed at the center of the first outer surface M1.

Alternatively, the film inserted into the slot may use self-developing no-clean film. The size of the film inserted into the slot can be matched with the size of the slot and is ensured not to shake, i.e. the size of the film inserted into the first slot 1011 can be matched with the size of the first slot 1011, and the size of the film inserted into the second slot 1012 can be matched with the size of the second slot 1012. Or the film shape may be matched with the overall shape of the first slot 1011 and the second slot 1012, for example, the film may be a piece of film consisting of two sub-films perpendicular to each other and intersecting each other.

In embodiments of the present invention, the film may be sized to match the slot prior to insertion into the slot. By setting the size of the film to be matched with the size of the slot, the film inserted into the slot can be ensured not to shake, and the reliability of verifying the deviation between the treatment isocenter and the mechanical rotation isocenter is improved.

Fig. 4 is a schematic diagram of another structure of the first verification die body 10 in the verification apparatus according to the embodiment of the invention. As shown in fig. 4, the first verification die body 10 may further be provided with a first through hole T1 for conducting the outer surface of the first verification die body 10 with the first slot 1011, and a second through hole T2 for conducting the outer surface of the first verification die body 10 with the second slot 1012.

The extending direction of the first through hole T1 intersects with the insertion surface of the first slot 1011, and the intersection point of the first through hole T1 and the insertion surface of the first slot 1011 is the center point of the insertion surface of the first slot 1011. The extending direction of the second through hole T2 intersects with the insertion surface of the second slot 1012, and the intersection point of the second through hole T2 and the insertion surface of the second slot 1012 is also the center point of the insertion surface of the second slot 1012.

For example, referring to fig. 4, the first verification die body 10 is provided with a first through hole T1 on one side surface and a second through hole T2 on the top surface. The extending direction of the first through hole T1 is perpendicular to the inserting surface of the first slot 1011, and the extending direction of the second through hole T1 is perpendicular to the inserting surface of the second slot 1012.

By providing the first through hole T1 and the second through hole T2, it is possible to mark the center of the film inserted in the first slot 1011 by passing the needle or the colored cartridge through the first through hole T1 and mark the center of the film inserted in the second slot 1012 by passing the second through hole T2 at the time of deviation verification. Then, the focal spot images formed in the two films are obtained through irradiation of a radioactive source in the image acquisition component and analysis of a scanner. Since the center point of the first verification phantom 10 is in theory coincident with the mechanical rotation isocenter, this mark may be referred to as a mechanical isocenter mark. And the control host can conveniently determine the deviation between the subsequent mechanical isocenter and the treatment isocenter, and the accuracy and the efficiency of determining the deviation are improved.

Alternatively, the first verification die body 10 may be a solid structure, and as shown in fig. 1,2 and 4, the first verification die body 10 may be a cube in shape. Alternatively, the first authentication mold body 10 may have other shapes, such as a prism. The shape of the first verification die body 10 is not limited in the embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a second verification die body 20 in the verification device according to the embodiment of the invention. As shown in fig. 5, at least three sets of calibration lines may be provided on the outer surface of the second verification die body 20 (e.g., fig. 5 only shows three sets of calibration lines), each set of calibration lines including two calibration lines L1 and L2 perpendicular to each other. Assuming that the intersection of the two calibration lines L1 and L2 comprised by each set of calibration lines is the target point, it can be seen with reference to fig. 5 that the respective target points of the at least three sets of calibration lines may be coplanar.

Wherein, in the at least three sets of calibration lines, two sets of calibration lines are respectively disposed on two opposite sides of the second verification die body 20, and one set of calibration lines is disposed on one side of the second verification die body 20 away from the support body for supporting the second verification die body 20. The support may be a treatment couch or a base.

For example, assuming that the second verification die body 20 has a rectangular parallelepiped structure as shown in fig. 1 and 5, it can be seen with reference to fig. 5 that two calibration lines L1 and L2 perpendicular to each other are provided on the top surface and the opposite side surfaces of the second verification die body 20, respectively.

Deviations in the mechanical rotation isocenter may also occur due to installation errors or longer use times, so the radiation treatment system may verify deviations in the mechanical rotation isocenter using the second verification phantom 20.

Alternatively, the verification device may be placed on the couch at first, while the second verification phantom 20 is used to verify deviations in the mechanical rotational isocenter. And such that two mutually perpendicular calibration lines L1 and L2 provided on each outer surface of the second verification die body 20 coincide with the cross rays emitted from the laser lamp. The control host may then adjust the position of the treatment couch such that the first positioning member 40 within the second verification phantom 20 is aligned with the mechanical rotational isocenter. At this time, the bulb tube may irradiate the second verification mold body 20 at different angles at least twice, and correspondingly, the detector installed opposite to the bulb tube may receive the radiation emitted by the radiation source, and collect at least two images of the first positioning element 40 according to the radiation. The detector may then send the generated at least two images to the imaging server. The image server may then analyze the at least two images to determine a deviation of the mechanical rotation isocenter. And the determined deviation is sent to the control host machine, so that the control host machine can accurately adjust the position of the treatment couch according to the deviation, and the influence of the deviation on the radiation treatment precision is avoided. And, the control host can also store the determined deviation, so that the control host can accurately position the patient according to the deviation when radiation therapy is performed.

Optionally, the control host may also pre-store the relative positions of the center point of the first verification die body 10 and the center point of the first positioning member 40 (i.e., the coordinates of the positions of the first verification die body 10 and the second verification die body 20). After the control host aligns the first positioning member 40 with the mechanical rotational isocenter according to the deviation, the position of the treatment couch may be adjusted according to the pre-stored relative position, such that the center point of the first verification phantom 10 is aligned with the mechanical rotational isocenter.

Alternatively, in an embodiment of the present invention, two calibration lines L1 and L2 perpendicular to each other may be engraved on the outer surface (e.g., the top surface and two opposite side surfaces) of the second verification body 20. Or two perpendicular calibration lines L1 and L2 may be printed on the outer surface of the second verification body 20. Or two mutually perpendicular lines may be attached to the outer surface of the second verification body 20 as the calibration lines L1 and L2.

In an embodiment of the present invention, three laser lamps may be included in the radiation therapy system, and each of the laser lamps may emit a cross-shaped radiation. One of the laser lights may be located opposite the rotating gantry (e.g., on a wall opposite the rotating gantry) and the laser light may be located at a height that is higher than the height of the rotating gantry, which may be used to verify whether the patient is lying straight on the treatment couch. The remaining two laser lamps may be disposed on left and right sides of the rotating gantry, respectively (e.g., may be disposed on walls on the left and right sides), each of the remaining two laser lamps may emit a longitudinal axis ray and a transverse axis ray, respectively, and the longitudinal axis ray and the transverse axis ray emitted by each of the laser lamps may be perpendicular to each other (i.e., intersect into a cross-shaped ray).

The intersection point of the cross rays emitted by the three laser lamps is a reference point when the patient is positioned, namely, the reference coordinate when the die body is positioned. Therefore, by providing two calibration lines L1 and L2 perpendicular to each other on the top surface and two opposite side surfaces of the second verification body 20, it is possible to detect whether the rays emitted from the laser lamps are perpendicular to each other, and thus, whether the position of the laser lamps is deviated. When the position deviation of the laser lamp is detected, the position of the laser lamp can be adjusted in time according to the deviation, so that the reliability in radiotherapy is further ensured.

Optionally, as shown in fig. 5, a plurality of third positioning members 60 may also be disposed within the second verification mold body 20. And, the plurality of third positioning members 60 are not coplanar, and the number of the third positioning members 60 is not less than 4 (4 third positioning members 60 are shown in fig. 5).

A plurality of third positioner tubes G3 may be disposed in the second verification die body 20 in one-to-one correspondence with the plurality of third positioners 60. Each third positioner 60 may be located within a corresponding one of the third positioner tubes G3.

For example, referring to fig. 5, 4 third positioner tubes G3 are provided in the second verification die body 20, and each third positioner 60 of the four third positioners 60 may be respectively located in one third positioner tube G3. Alternatively, as shown in fig. 1 and 5, a first positioner channel G1 may be further disposed in the second verification die body 20, and the first positioner 40 may be disposed in the first positioner channel G1.

Alternatively, as shown in fig. 1 and 5, the first positioning member 40 and the third positioning member 60 may each be in the shape of a sphere, so that the first positioning member 40 may be also referred to as a first positioning ball and the third positioning member 60 may be also referred to as a third positioning ball. Accordingly, the first and third positioners 40 and 60 may each be 6 millimeters (mm) in diameter. The distances between any two third positioning pieces are equal. That is, for any two third positioners 60 of the plurality of third positioners 60, the pitch of the two third positioners 60 in the first direction and the pitch in the second direction may be 60mm. Wherein the first direction is perpendicular to the second direction. The distance between each third positioning member 60 of the plurality of third positioning members 60 and the first positioning member 40 may be(About 51.96 mm).

For example, assuming that the second verification pattern 20 is a cube as shown in fig. 1 and 5, the first direction may be a length direction of the second verification pattern 20, the second direction may be a width direction of the second verification pattern 20, or the first direction may be a length direction of the second verification pattern 20, the second direction may be a height direction of the second verification pattern 20, or the first direction may be a width direction of the second verification pattern 20, and the second direction may be a height direction of the second verification pattern 20. Referring to fig. 5, it can be seen that the distance d1 between the two third positioning members 60 in the width direction of the second verification pattern body 20 is 60mm, and the distance d2 between the two third positioning members in the length direction of the second verification pattern body 20 is 60mm.

In the embodiment of the present invention, when the first positioning member 40 and the plurality of third positioning members 60 satisfy the above-mentioned geometric relationship, the second verification phantom 20 can also be used as a geometric calibration phantom, i.e. the second verification phantom 20 can be used to detect geometric calibration parameters in the radiation therapy system, such as an installation error of an image acquisition component (i.e. a detector or a bulb tube), etc. And may also use the second verification phantom 20 to verify the accuracy of the image-guided placement.

For example, the first positioning member 40 may be used to simulate a target site of an affected part of a patient, and a plurality of third positioning members 60 may be used to simulate a reference point located around the target site. Because errors may occur during positioning of the patient by the treating physician, in order to verify the accuracy of the image-guided positioning correction, images obtained by the image capturing assembly capturing images of the first positioning member 40 and the plurality of third positioning members 60 may be obtained, and whether the target position (or the position of a point other than the target) and the actual position thereof satisfy the requirements of the relevant standard may be determined according to the CT plan of the second verification phantom 20.

Optionally, to avoid unnecessary impact of the material of the positioning ball on the radiation treatment. When the second verification phantom 20 is used to perform a CT scan and to plan a treatment, the first positioning member 40 and the plurality of third positioning members 60 may be selected from a material density similar to the bone density of the human body. For example, the material of the first positioning member 40 and the plurality of third positioning members 60 may each be at least one of aluminum, teflon, glass, or ceramic. The embodiment of the present invention is not limited thereto.

Alternatively, the second verification body 20 may be a solid structure. And referring to fig. 1 and 5, the second verification pattern 20 may have a rectangular parallelepiped shape.

Fig. 6 is a schematic structural diagram of a third verification die body 30 in the verification apparatus according to the embodiment of the invention. As shown in fig. 6, the third verification die body 30 may be a hollow-interior housing.

Accordingly, in order to allow the second spacer 50 to be positioned at the center of the third verification die body 30, referring to fig. 1 and 6, the housing may be provided inside with a second spacer pipe G2. At this time, the second positioner 50 can be disposed in the second positioner pipe G2. Alternatively, the first, second and third positioner tubes G1, G2 and G3 may all be referred to as fixed position measuring bars.

Alternatively, when the third verification phantom 30 is used to verify the deviation of the treatment isocenter from the mechanical rotation isocenter, the third verification phantom 30 may be irradiated at different angles with a radiation source at least twice, and a detector mounted opposite the radiation source may receive radiation emitted from the radiation source and collect at least two images according to the received radiation. The detector may then send the generated at least two images to the imaging server. And the image server analyzes the at least two images to obtain coordinates of a center point of the at least two images (i.e., coordinates of the second positioning element 50). The image server may then determine the actual coordinates of the beam focus based on the coordinates of the second positioning member 50, and thus the deviation of the treatment isocenter from the mechanical rotation isocenter. The image server can also send the deviation to the control host, and the control host can accurately adjust the position of the treatment bed according to the deviation. In addition, the control host may also store the offset.

By designing the third verification die body 30 as a hollow-interior housing, the problem of different attenuation when radiation (e.g., cobalt source radiation) from the radiation source irradiates the second positioning member 50 for imaging due to different thickness of each outer surface of the third verification die body 30 can be avoided. And further, the problem that the image is difficult to analyze in the later stage due to uneven brightness of the light spot generated on the second positioning member 50 in the imaging can be avoided.

Alternatively, the material of the second positioning member 50 may be tungsten metal, and the second positioning member 50 may be a sphere, so the second positioning member 50 may also be called a tungsten bead, and the diameter of the second positioning member may be 7mm. And referring to fig. 1 and 6, the third verification pattern 30 may have a rectangular parallelepiped shape. Or the third verification pattern 30 may be other shaped structures, for example, the third verification pattern 30 may be a hemisphere for structural aesthetics. The embodiment of the present invention is not limited thereto.

Fig. 7 is a side view of a verification device according to an embodiment of the invention, including a first verification die body 10, a second verification die body 20, and a third verification die body 30, as shown in fig. 7. And the first authentication mold body 10, the second authentication mold body 20, and the third authentication mold body 30 may be sequentially arranged along the length direction Y of the treatment couch.

Fig. 8 is a top view of a verification device according to an embodiment of the present invention. Fig. 9 is a left side view of a verification device according to an embodiment of the present invention. Referring to fig. 7 to 8, it can be seen that in an embodiment of the present invention, the first authentication phantom 10, the second authentication phantom 20, and the third authentication phantom 30 may be sequentially connected in the length direction of the treatment couch. The first verification pattern 10 may be a cube, the second verification pattern 20 may be a cuboid, and the third verification pattern 30 may be a hemisphere. Referring to fig. 9, it can be seen that the opening K1 of the first slot and the opening K2 of the second slot of the first verification die body 10 are located on the same outer surface, and an extraction groove a communicating with both the first slot and the second slot is further provided on the outer surface.

Alternatively, an adhering tool (such as medical glue) may be used to sequentially adhere the first verification die body 10, the second verification die body 20 and the third verification die body 30, where the distances between the first verification die body 10 and the second verification die body 20 and the distances between the second verification die body 20 and the third verification die body 30 are all 0. Or, a connecting component (such as a connecting rod) may be further used to connect the first verification die body 10, the second verification die body 20 and the third verification die body 30 in sequence, and accordingly, the distances between the first verification die body 10 and the second verification die body 20 and the distances between the second verification die body 20 and the third verification die body 30 may be 0 or not 0. The embodiments of the present invention are not limited in this regard.

In addition, when the verification apparatus includes the third verification pattern body 30, since the second positioning member 50 made of a metal material is provided at the center of the third verification pattern body 30. In order to avoid that the second positioning member 50 affects the verification result when the third verification phantom 30 is used to verify the deviation of the treatment isocenter from the mechanical rotation isocenter under the nuclear magnetic scan, the third verification phantom 30 may be detachably connected to the first verification phantom 10 or the second verification phantom 20, i.e. the third verification phantom 30 may be detachable.

Alternatively, in an embodiment of the present invention, referring to fig. 7 to 9, the authentication apparatus may further include a base 70, and at least one of the first authentication mold body 10, the second authentication mold body 20, and the third authentication mold body 30 may be disposed on the base 70. The base 70 may be positioned on a treatment couch.

Alternatively, the first, second and third verification patterns 10, 20 and 30 may be sequentially connected and then fixed to the base 70 by fixing means (e.g., screws), or the first, second and third verification patterns 10, 20 and 30 may be sequentially connected and then directly placed on a treatment couch without providing a base. The embodiment of the present invention is not limited thereto.

In the embodiment of the invention, the first verification die body 10, the second verification die body 20 and the third verification die body 30 with different functions are sequentially connected to form a verification device, so that compared with the verification device which can only realize a single function in the related art, the function of the verification device provided by the embodiment of the invention is more abundant.

Alternatively, in an embodiment of the present invention, the materials of the shells of the first authentication mold body 10, the second authentication mold body 20, and the third authentication mold body 30 may be all plexiglas. The organic glass has smaller blocking to the rays, namely the attenuation of the rays passing through the organic glass is smaller, so that the reliability of detecting the deviation of the treatment isocenter and the mechanical rotation isocenter is ensured. And the cost of the organic glass is also lower.

The embodiment of the invention also provides a radiation therapy system. The radiation therapy system can include a verification device as shown in any one of figures 1 to 9 and a radiation therapy apparatus.

Alternatively, the radiation therapy device can include a radiation source and a treatment couch. The radiotherapy apparatus may further comprise an image acquisition assembly comprising a detector arranged opposite the radiation source, and/or an imaging device (comprising a bulb and an oppositely arranged flat panel detector). The radiation therapy system can also include a control host, an image server, a scanner, and three laser lamps.

The verification device can be arranged on the treatment bed, the image acquisition component can be connected with the image server, the image server can be connected with the control host, and the control host can be connected with the treatment bed. Or the image server can also be directly integrated in the control host. The radiation source may be a radiation source of a treatment head in a radiation treatment apparatus, i.e. the radiation emitted by the radiation source may also be used to irradiate a target spot of a patient, thereby performing radiation treatment on the patient.

In the embodiment of the invention, the scanner can be used for scanning the film in the verification device after the radiation source irradiates, so that the focal spot formed on the film is displayed, and a therapist can send an image containing the focal spot to the image server. The image acquisition assembly and the radiation source may be used to acquire images of the verification device and transmit the acquired images to an image server. The image server may be configured to analyze the acquired image and determine a deviation based on the analysis (e.g., determine a deviation of the treatment isocenter and the mechanical rotation isocenter), and the image server may also send the determined deviation to the control host. The control host may be used to adjust the position of the treatment couch based on the received bias, and the control host may store the bias. Each laser lamp may be used to emit radiation to the verification device. Alternatively, the radiation emitted by the laser lamp may be cross radiation.

Optionally, the control host may include an upper computer and a lower computer, where the upper computer may be connected to the lower computer, and the lower computer may be connected to other components of the radiation therapy system (e.g., the treatment couch and the image acquisition assembly). The upper computer can be used for sending control instructions to the lower computer, and the lower computer can control the working states of other components according to the received control instructions.

In summary, embodiments of the present invention provide a radiation therapy system including a verification device. The radiation source in the radiotherapy equipment and the bulb tube in the image acquisition component can emit rays to the verification device, the detector arranged opposite to the radiation source and the detector arranged opposite to the bulb tube can receive the rays and acquire images according to the rays, and the detector can send the acquired images to the image server. The scanner can scan the film in the verification device after irradiation of the radioactive source, so that the focal spot formed on the film appears, and the therapist can send the image containing the focal spot to the image server. The image server can analyze the acquired images to determine the deviation of the treatment isocenter and the mechanical rotation isocenter or determine the deviation of the mechanical rotation isocenter, and send the deviation to the control host, and the control host accurately positions the patient according to the deviation, so that the accuracy of radiotherapy is improved, and the quality of radiotherapy is ensured.

The embodiment of the invention provides a verification method of a radiation therapy system. The method may include at least one of a first authentication process, a second authentication process, and a third authentication process.

Fig. 10 is a flowchart of a method for a first verification process according to an embodiment of the present invention. As shown in fig. 10, the first authentication process may include:

Step 1001, acquiring a first image and a second image.

In the embodiment of the present invention, the first image and the second image may be obtained by radiating two films inserted into the slot of the first verification die body with a beam, and then scanning the radiated two films. The first image may be obtained by irradiating a film inserted into the first slot of the first verification body with a radiation beam from a radiation source, and then scanning the irradiated film. The second image may be obtained by irradiating the film inserted in the second slot of the first verification die body with a beam from the radiation source, and then scanning the irradiated film.

For example, the radiation source may emit radiation to the verification device, which then forms a focal spot in the center of the film inserted into the first verification pattern. The treating physician may then remove the film from the first verification phantom and scan the film using a scanner so that the focal spot formed on the film appears. Finally, the treating physician may also upload the first image and the second image containing the focal spot to the imaging server. I.e. the image server may obtain the first image and the second image.

In addition, after the films are placed in the slots, needles or pencil cores with colors can be used for penetrating through the through holes, and marks can be respectively carried out at the central positions of the two films. Since the center of the first verification phantom is now aligned with the mechanical rotation isocenter, the mark can be used as the theoretical coordinate of the mechanical rotation isocenter. Accordingly, the image server can conveniently determine the deviation of the treatment isocenter and the mechanical rotation isocenter according to the mark, and the accuracy and the efficiency of determining the deviation of the treatment isocenter and the mechanical rotation isocenter can be improved.

Step 1002, determining actual coordinates of a beam focus of the beam according to the first image and the second image, and determining deviation of the treatment isocenter from the mechanical rotation isocenter according to the actual coordinates of the beam focus.

Since the imaging point is the beam focus of the radiation emitted by the radiation source. The image server may thus also determine the actual coordinates of the beam focus of the beam from the first image and the second image.

The coordinates of the focal spot in the first image and the coordinates of the focal spot in the second image are both coordinates in a two-dimensional image coordinate system, so that the image server can perform coordinate transformation on the obtained coordinates of the focal spot in the first image and the obtained coordinates of the focal spot in the second image, and the coordinates are the actual coordinates of the focal spot in the three-dimensional device coordinate system. Further, the image server may determine the deviation of the coordinates of the treatment isocenter and the mechanical rotation isocenter according to the actual coordinates of the beam focus (i.e., the actual coordinates of the treatment isocenter) after obtaining the actual coordinates of the beam focus. The imaging server may then send the determined deviation to the control host so that the control host stores the determined deviation, after which the control host may accurately position the patient directly in accordance with the deviation when radiation therapy is being delivered. Or the control host computer can directly adjust the position of the treatment couch according to the deviation after verifying that the deviation is obtained, so that the center point of the first verification die body is aligned with the beam focus.

Since the center point of the first verification phantom can be used to simulate the target spot of the affected part, the target spot can be aligned with the actual beam focus after adjusting the position of the treatment couch. The problem that when the treatment isocenter deviates due to the installation error, the beam focus cannot accurately irradiate to the target spot is avoided, the accuracy of radiotherapy is improved, and the quality of radiotherapy is ensured.

Fig. 11 is a flow chart of a method of a second verification process according to an embodiment of the present invention. As shown in fig. 11, the second authentication process may include:

step 1101, adjusting the position of the second verification die body, so that the first positioning piece arranged at the center of the second verification die body is aligned with the mechanical rotation isocenter.

In the embodiment of the invention, the radiation emitted by the laser lamp can be cross radiation. In theory, when the second verification die body is placed on the treatment couch, the intersection point of the cross rays emitted by the laser lamp is the reference coordinate when the die body is positioned. Further, when two calibration lines arranged on each outer surface of the second verification die body are overlapped with the cross rays emitted by the laser lamp, the position of the treatment bed can be adjusted first, the second verification die body is moved to a treatment space, and the first locating piece arranged in the second verification die body is aligned with the mechanical rotation isocenter. At this time, the center point (i.e., the first positioning element) of the second verification die body is the theoretical coordinate of the mechanical rotation isocenter.

Alternatively, the control host may be connected to the couch, and the treating physician may first place the verification device in the couch up position. Then, the control host computer can make each calibration line that sets up on every surface of second verification die body coincide with the ray that the laser lamp sent through adjusting the position of treatment bed. Or the treating physician can directly adjust the position of the second verification die body so that each calibration line arranged on each outer surface of the second verification die body coincides with the rays emitted by the laser lamp. The control host may then continue to adjust the position of the couch such that the second verification phantom center point is aligned with the mechanical rotation isocenter.

Step 1102, acquiring at least two third images.

In the embodiment of the invention, after the second verification die body is moved to the position that the center point of the second verification die body is aligned with the mechanical isocenter coordinate, the image server can acquire at least two third images. Each third image can be an image obtained by image acquisition of the first positioning piece in the second verification die body by the image acquisition component.

Optionally, the bulb in the image acquisition assembly can send X-rays to the second verification die body, and the detector arranged opposite to the bulb can receive the X-rays at the moment, so that image acquisition of the first positioning piece is realized. Further, the detector may send the acquired third image to the image server. Correspondingly, the image server can acquire at least two third images.

Step 1103, determining a deviation of the mechanical rotation isocenter according to the first coordinate of the first positioning member in each third image and the reference coordinate of the center point in each third image.

After the image server acquires at least two three images, the first coordinate of the first positioning element in each third image and the reference coordinate of the center point in each third image can be further acquired. The image server may then determine a deviation of the mechanical rotation isocenter from the acquired first coordinate and reference coordinate. Since the center point of the second verification phantom is already theoretically aligned with the mechanical rotation isocenter at this time, the image server may determine the reference coordinates of the center point of the acquired third image as the theoretical coordinates of the mechanical rotation isocenter. The first coordinates of the first positioning member are the actual coordinates of the mechanical rotation isocenter. The above-mentioned theoretical coordinates and actual coordinates are coordinates in a two-dimensional image coordinate system.

Furthermore, the image server may further perform coordinate transformation on the obtained at least two first coordinates to obtain an actual coordinate of the mechanical rotation isocenter in the three-dimensional device coordinate system, and may perform coordinate transformation on the obtained at least two reference coordinates to obtain a theoretical coordinate of the mechanical rotation isocenter in the three-dimensional device coordinate system. Then, the image server may calculate, according to the determined actual coordinates and theoretical coordinates of the mechanical isocenter, a deviation of the mechanical rotation isocenter, and send the determined deviation to the control host. Optionally, the control host may also store the deviation of the mechanical rotation isocenter, so that the patient may be accurately positioned directly according to the deviation during the subsequent radiotherapy.

Fig. 12 is a flow chart of a method of a third verification process according to an embodiment of the present invention. As shown in fig. 12, the method may include:

step 1201, acquiring at least two fourth images.

The fourth image may be an image acquired after the radiation source in the image acquisition assembly irradiates the second positioning member with the beam. Optionally, the radiation source in the image acquisition assembly may irradiate the third verification phantom at least twice, i.e., the radiation source may emit at least two radiation rays to the third verification phantom. Correspondingly, the detector arranged opposite to the radioactive source can receive the rays and acquire at least two fourth images according to the received rays. And, the detector may send the generated at least two fourth images to the image server. I.e. the image server may acquire images acquired by the image acquisition component.

Step 1202, determining the actual coordinates of the beam focus according to each acquired fourth image, and determining the deviation of the treatment isocenter and the mechanical rotation isocenter according to the actual coordinates of the beam focus.

Since the imaging point is the beam focus of the radiation emitted by the radiation source. Thus, when the image server acquires at least two fourth images, the actual coordinates of the beam focus can be determined according to each of the at least two images.

The image server may analyze each of the at least two fourth images obtained, and obtain coordinates of a center point of each fourth image. For example, the image server may acquire two images, and analyze the two fourth images to obtain coordinates of a center point of each fourth image. Because the actual coordinates of the beam focus are the coordinates in the three-dimensional equipment coordinate system, and the coordinates of the center point of the fourth image are the coordinates in the two-dimensional image coordinate system, the image server can perform coordinate conversion on the coordinates of the center point of each fourth image in the at least two fourth images by acquiring the at least two fourth images, so as to obtain the coordinates of the center point of the fourth image in the three-dimensional equipment coordinate system. Correspondingly, the image server can determine the coordinates of the center point of the fourth image in the three-dimensional device coordinate system as the actual coordinates of the beam focus.

Further, after the image server obtains the actual coordinates of the beam focus, the deviation of the therapeutic isocenter from the mechanical rotation isocenter may also be determined according to the actual coordinates of the beam focus (i.e., the actual coordinates of the therapeutic isocenter). The imaging server may then send the determined deviation to the control host, which adjusts the position of the couch based on the deviation, such that the center point beam of the third verification phantom is in focus. In addition, the control host can also store the determined deviation, and then, when radiation therapy is carried out, the control host can accurately position the patient according to the deviation.

Since the center point of the third verification phantom can be used to simulate the target spot of the affected part, the target spot can be aligned with the actual beam focus after adjusting the position of the treatment couch. The problem that when the treatment isocenter deviates due to the installation error, the beam focus cannot accurately irradiate to the target spot is avoided, the accuracy of radiotherapy is improved, and the quality of radiotherapy is ensured.

In summary, the embodiments of the present invention provide a verification method for a radiation therapy system. Since the method comprises at least one of a first verification process, a second verification process and a third verification process, i.e. the radiation therapy system can use the verification means to achieve at least one of verifying a deviation of the treatment isocenter from the mechanical rotation isocenter and verifying a deviation of the mechanical rotation isocenter. Therefore, the verification method of the radiation therapy system has rich functions.

Optionally, when the method includes a first authentication process, a second authentication process, and a third authentication process. After the second verification process (i.e., step 1103 described above) is performed, the radiation therapy system can also adjust the position of the couch based on the offset such that the first positioning member in the second verification phantom is aligned with the mechanical rotation isocenter. For example, the control host may adjust the position of the couch based on the received offset such that the first detent in the second verification phantom aligns with the mechanical rotation isocenter.

Further, the radiation therapy system can adjust the position of the treatment couch based on the relative position between the center point of the first verification phantom and the first positioning member such that the center point of the first verification phantom is aligned with the mechanical rotation isocenter. Optionally, the control host may store in advance a relative position between the center point of the first verification die body and the first positioning element (i.e., the control host may store in advance coordinates of the first verification die body and the second verification die body in the three-dimensional device coordinate system). Correspondingly, the control host can adjust the position of the treatment bed according to the relative position between the central point of the first verification die body and the first positioning piece, so that the central point of the first verification die body is aligned with the mechanical rotation isocenter.

In addition, after aligning the center point of the first verification phantom with the mechanical rotation isocenter, the image server in the radiation therapy system may also use the first verification phantom to continue verifying whether there is a deviation between the treatment isocenter and the mechanical rotation isocenter. I.e. the first authentication procedure described above (i.e. steps 1001 and 1002 described above) may continue.

After the first verification process (i.e., step 1002 above) is performed, the radiation therapy system can also adjust the position of the treatment couch based on the relative position between the second positioner and the first positioner such that the second positioner is aligned with the mechanical rotation isocenter. Optionally, the control host may store in advance a relative position between the second positioning element and the first positioning element that are set in the center of the third verification die body (i.e., the control host may also store in advance a coordinate of the third verification die body in the three-dimensional device coordinate system). Correspondingly, the control host can adjust the position of the treatment bed according to the relative position between the second positioning piece and the first positioning piece, so that the second positioning piece is aligned with the mechanical rotation isocenter.

In addition, after aligning the second positioning member with the mechanical rotation isocenter, the image server in the radiation treatment system may also use a third verification phantom to continue to verify whether there is a deviation between the treatment isocenter and the mechanical rotation isocenter. I.e. the third verification process (i.e. steps 1201 and 1202 described above) may continue. I.e. the radiation therapy system can perform the second verification process, the first verification process and the third verification process in sequence.

Optionally, the control host may also store in advance a relative position between the second positioning element set inside the third verification die body and the center point of the first verification die body (i.e., the control host may store in advance coordinates of the first verification die body and the third verification die body in the three-dimensional device coordinate system). Accordingly, after the third verification process (i.e., step 1202) is performed, the control host computer may also adjust the position of the couch based on the relative position such that the first verification phantom center point is aligned with the mechanical rotation isocenter.

However, errors may also occur when the upper computer adjusts the position of the couch, i.e. although the upper computer has already adjusted the second positioning member to be in focus with the actual beam. However, when the upper computer adjusts the position of the treatment couch again, the beam focus may deviate, i.e., the center point of the first verification phantom may not be aligned with the actual beam focus. In order to ensure the accuracy of radiotherapy, the image server and the control host in the radiotherapy system can continue to perform the first verification process, i.e. continue to verify whether there is a deviation between the center point of the first verification die body and the mechanical rotation isocenter. Or after the first verification process is performed, that is, the position of the treatment couch is adjusted according to the deviation of the actual coordinates of the beam focus and the coordinates of the mechanical rotation isocenter, so that the center point of the first verification die body is aligned with the beam focus, the control host can also adjust the position of the treatment couch according to the relative position, so that the second positioning member is aligned with the mechanical rotation isocenter. Accordingly, to further ensure that the second positioner is in focus with the actual beam after adjustment of the couch, the control host may further proceed with the third verification procedure described above to improve the accuracy of the radiation treatment. That is, the first verification process and the third verification process can mutually verify the deviation of the treatment isocenter and the mechanical rotation isocenter, and the reliability of determining the deviation is improved.

The embodiment of the invention provides a verification device, which can comprise at least one verification module of a first verification module, a second verification module and a third verification module. For example, the authentication device may include at least two authentication modules.

Fig. 13 is a block diagram of a first verification module according to an embodiment of the present invention. As shown in fig. 13, the first verification module may include:

A first acquisition submodule 1301 is configured to acquire a first image and a second image.

The first image and the second image may be obtained by irradiating two films inserted into the slot of the first verification die body with a beam, and then scanning the irradiated two films.

A first determining submodule 1302 is configured to determine actual coordinates of a beam focus of the beam from the first image and the second image, and determine a deviation of the treatment isocenter from the mechanical rotation isocenter from the actual coordinates of the beam focus.

Fig. 14 is a block diagram of a second verification module according to an embodiment of the present invention. As shown in fig. 14, the second verification module may include:

An adjustment sub-module 1401 is used to adjust the position of the second verification die body, so that the first positioning piece arranged at the center of the second verification die body is aligned with the mechanical rotation isocenter.

A second acquiring sub-module 1402, configured to acquire at least two third images.

Each third image is an image obtained by carrying out image acquisition on the first positioning piece.

The second determining submodule 1403 is configured to determine a deviation of the mechanical rotation isocenter according to the first coordinate of the first positioning member in the third image and the reference coordinate of the center point of each of the third images.

Fig. 15 is a block diagram of a third verification module according to an embodiment of the present invention. As shown in fig. 15, the third verification module may include:

A third acquisition sub-module 1501 for acquiring at least two fourth images.

The fourth image is an image acquired after the second positioning piece arranged at the center of the third verification die body is irradiated by the beam.

A third determining submodule 1502 is configured to determine an actual coordinate of the beam focus according to each of the acquired fourth images, and determine a deviation of the treatment isocenter from the mechanical rotation isocenter according to the actual coordinate of the beam focus.

Alternatively, each sub-module of the first, second and third verification modules may all be provided in the same device in the radiation therapy system. For example, they may all be provided in the control host. Or each of the sub-modules of the first, second and third verification modules may be provided in different devices in the radiation therapy system. For example, the first acquiring submodule 1301 of the first verification module, the second acquiring submodule 1402 of the second verification module, and the third acquiring submodule 1501 of the third verification module may all be provided in the image acquisition component, and the first determining submodule 1302 of the first verification module, the second determining submodule 1403 of the second verification module, and the third determining submodule 1502 of the third verification module may all be provided in the image server.

In summary, the embodiments of the present invention provide a verification device for a radiation therapy system. The device comprises at least one of a first verification module, a second verification module and a third verification module which can realize different functions, so that the function of the verification device of the radiotherapy system is rich.

The specific manner in which the various modules perform the operations of the verification device of the radiation therapy system in the above embodiments has been described in detail in relation to the embodiments of the method, and will not be described in detail here.

The embodiment of the invention provides a verification device of a radiation therapy system. The positioning device may include a processor and a memory having instructions stored therein that are loadable and executable by the processor to implement a method of verifying a radiation therapy system as shown in any one of figures 10-12.

In addition, embodiments of the present invention provide a storage medium having instructions stored therein that, when executed on a processing assembly, cause the processing assembly to perform a method of validating a radiation therapy system as shown in any one of fig. 10-12.

It will be clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the radiation therapy system and the verification device thereof described above may refer to the corresponding process in the foregoing method embodiment, and will not be described in detail herein.

The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention, but rather, the invention is to be construed as limited to the appended claims.

Claims

1. The verification die body is characterized by comprising a slot, wherein the slot is used for placing a film, the slot comprises a first slot and a second slot, an opening of the first slot and an opening of the second slot are both positioned on a first outer surface of the verification die body, and an extraction groove is formed at the juncture of the opening of the first slot and the opening of the second slot;

The verification die body is provided with a first through hole for conducting the outer surface of the verification die body with the first slot and a second through hole for conducting the outer surface of the verification die body with the second slot.

2. The verification die body of claim 1, wherein the extraction groove communicates with both the first slot and the second slot.

3. The verification die body of claim 1, wherein an intersection of the opening of the first slot and the opening of the second slot is located at a central location of the first outer surface.

4. A verification die body as claimed in claim 3, wherein said extraction recess is centrally located on said first outer surface.

5. The authentication die body of claim 1, wherein the first slot is perpendicular to the second slot, and wherein the first slot and the second slot each pass through a center point of the authentication die body.

6. The authentication phantom as set forth in claim 1, wherein the extraction groove has a circular, rectangular or triangular cross section.

7. The authentication phantom as set forth in claim 1, wherein,

The extending direction of the first through hole is intersected with the first slot, and the intersection point of the first through hole and the first slot is the center point of the verification die body;

The extending direction of the second through hole is intersected with the second slot, and the intersection point of the second through hole and the second slot is the center point of the verification die body.

8. The authentication die body of claim 1, wherein the first through hole is provided on one side of the authentication die body and the second through hole is provided on a top surface of the authentication die body.

9. The authentication die body of claim 1, wherein the first through hole extends in a direction perpendicular to the first slot and the second through hole extends in a direction perpendicular to the second slot.

10. The authentication mold body of claim 1, wherein the authentication mold body is a solid structure.

11. A verification die body as claimed in claim 1, wherein the verification die body is in the shape of a cube or prism.

12. The authentication mold body of claim 1, wherein the housing of the authentication mold body is of a material such as plexiglass.

13. A verification device of a radiation therapy system, wherein said verification device comprises a verification phantom as set forth in any one of claims 1 to 12.