CN110772273B - Imaging system with bed-bearing anti-collision mechanism and its anti-collision method - Google Patents

Abstract

A contrast system comprises a machine table, a bearing bed, an X-ray module, an image detection module, a processing unit and a man-machine interface, wherein the X-ray module and the image detection module are arranged on two opposite sides of the machine table, the man-machine interface is used for providing a plurality of contrast modes, and each contrast mode corresponds to different contrast distances. When the bearing bed is arranged on the machine table, the processing unit identifies the bearing bed type of the bearing bed through the machine table, and determines the safety distance between the X-ray module and the image detection module relative to the bearing bed according to the bearing bed type. And the processing unit disables a specific one of the plurality of contrast modes on the man-machine interface when a contrast distance of the specific contrast mode is smaller than the safety distance.

Description

Imaging system with bed-bearing anti-collision mechanism and anti-collision method

Technical field

The present invention relates to an imaging system, and in particular to an imaging system that can prevent a bearing bed from being collided and an anti-collision method thereof.

Background technique

The imaging system mainly includes an X-ray module for emitting X-rays, an image detection module for detecting X-rays to generate images, and a load-bearing bed disposed on the X-ray irradiation path and used to carry the irradiated object.

Generally speaking, the distance between the X-ray module and the carrying bed is equal to the distance between the image detection module and the carrying bed. When executing the imaging procedure, the X-ray module and the image detection module take the bearing bed as the center of the circle and rotate clockwise or counterclockwise relative to the bearing bed, thereby generating an X-ray image of the irradiated object.

For different irradiated objects (such as different animals), users may need images with different resolutions. In a general imaging system, the imaging system can adjust the image resolution by adjusting the distance between the X-ray module or image detection module and the bearing bed, thereby obtaining the Field of View (FoV) required by the user.

However, for different sizes of irradiated objects, the imaging system may need to install different types of bearing beds, and different types of bearing beds may have different volumes (such as width and height).

It can be seen from the above that if the user requires a higher resolution, it means that the distance between the X-ray module or image detection module and the load-bearing bed will be smaller. If the user is inexperienced and chooses an inappropriate resolution, the X-ray module or image detection module may be too small because the size of the bed is too large and the distance between the X-ray module or image detection module and the bed is too small. The measuring module collides with the load-bearing bed during rotation, causing damage.

Contents of the invention

The main purpose of the present invention is to provide an imaging system and an anti-collision method with a load-bearing bed anti-collision mechanism, which can identify the type of currently installed load-bearing bed, and automatically determine the type of load-bearing bed that can be selected by the user according to the type of the load-bearing bed. One or more imaging modes.

In order to achieve the above object, the imaging system with a load-bearing bed anti-collision mechanism of the present invention mainly includes: a machine table; a load-bearing bed detachably installed on the machine table; and an X arranged on opposite sides of the machine table. An optical module and an image detection module; a processing unit; and a human-machine interface for providing multiple imaging modes, wherein the imaging modes respectively correspond to different imaging distances.

When the load-bearing bed is installed on the machine platform, the processing unit identifies the load-bearing bed type of the load-bearing bed through the machine platform. Then, the processing unit determines a safe distance between the X-ray module and the image detection module relative to the carrier bed according to the type of the carrier bed. Furthermore, when the imaging distance of a specific imaging mode among the plurality of imaging modes is less than the safe distance, the processing unit disables the specific imaging mode on the human-machine interface.

Compared with related technologies, the technical effect achieved by the present invention is that the imaging system can determine different safety distances according to different bearing beds, and then disable one or more imaging modes with too small imaging distances based on the safety distance. In this way, the user will not be able to select the imaging mode where the imaging distance is too small during operation, thus preventing the X-ray module and the image detection module from moving during the movement due to the user selecting an inappropriate imaging mode. In the case of collision with the load-bearing bed.

Description of the drawings

Figure 1 is a schematic diagram of the first specific embodiment of the imaging system of the present invention.

Figure 2 is a block diagram of the first specific embodiment of the imaging system of the present invention.

Figure 3 is a first specific embodiment of the anti-collision flow chart of the present invention.

FIG. 4A is a schematic diagram of the bearing bed according to the first specific embodiment of the present invention.

Figure 4B is a schematic diagram of a human-machine interface according to the first specific embodiment of the present invention.

FIG. 5A is a schematic diagram of a load-bearing bed according to a second specific embodiment of the present invention.

Figure 5B is a second specific embodiment of the human-machine interface schematic diagram of the present invention.

FIG. 6A is a schematic diagram of a bearing bed according to a third specific embodiment of the present invention.

Figure 6B is a third specific embodiment of the human-machine interface schematic diagram of the present invention.

Figure 7 is a first specific embodiment of the imaging flow chart of the present invention.

Figure 8 is a schematic diagram of the imaging system according to a second specific embodiment of the present invention.

1: Imaging system

10: Processing unit

11: X-ray module

12: Image detection module

13: Machine

131: Leading interface

14: Carrying bed

141: Connection interface

15: Storage unit

151: Contrast mode

16: Human-machine interface

21: First load-bearing bed

211: Connection interface

22: Second load-bearing bed

221: Connection interface

23: Third load-bearing bed

231: Connection interface

L11: Initial first working distance

L12: Initial second working distance

L21: First working distance after adjustment

L22: Adjusted second working distance

Lw: working distance

L01: First working distance

L02: Second working distance

Ls: safe distance

S10～S22: Control steps

S30～S36: Control steps

Detailed ways

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 , a schematic diagram of the imaging system according to the first embodiment of the present invention is shown. The invention discloses an imaging system with an anti-collision mechanism for a bed (hereinafter referred to as the imaging system 1 in the description). The imaging system 1 at least includes an X-ray module 11, an image detection module 12, a machine platform 13 and Carrying bed 14. In this embodiment, the imaging system 1 may be a computed tomography (Computed Tomography, CT) system.

In the embodiment of FIG. 1 , the X-ray module 11 is disposed on one side (for example, directly above) of the machine platform 13 , and the image detection module 12 is disposed on the other side of the machine platform 13 relative to the X-ray module 11 ( For example, directly below). The carrying bed 14 is detachably arranged on the machine platform 13 . In this embodiment, the carrying bed 14 is disposed in the middle of the X-ray module 11 and the image detection module 12, and there is a working distance Lw between the X-ray module 11 and the image detection module 12, and the working distance Lw is variable.

Specifically, the above-mentioned working distance Lw refers to the distance between the X-ray module 11 and the image detection module 12, and the working distance Lw includes the first working distance L01 between the X-ray module 11 and the carrying bed 14 and the carrying bed. 14 to the second working distance L02 between the image detection module 12 .

As shown in FIG. 1 , the X-ray module 11 , the image detection module 12 and the machine table 13 are arranged in a straight line with each other. The X-ray module 11 emits X-rays in the direction of the image detection module 12 . After the X-rays pass through the carrying bed 14 (that is, pass through the object to be tested carried on the carrying bed 14), they are detected by the image detection module 12, and the image detection module 12 can generate an image based on the detected X-rays. corresponding image. When the imaging system 1 executes the imaging procedure, the X-ray module 11 and the image detection module 12 are controlled to rotate clockwise or counterclockwise around the carrying bed 14 (or the machine table 13 ).

Before executing the imaging procedure, the user can set the required resolution, and the imaging system 1 can adjust the working distance Lw according to the resolution set by the user, so that the image detection module 12 has a corresponding field of view (Field of View, FoV), so that the generated image has the resolution required by the user.

In this embodiment, the imaging system 1 can obtain the required resolution by adjusting the first working distance L01 and the second working distance L02 in the working distance Lw.

In the first embodiment, the first working distance L01 and the second working distance L02 may be equal distances. In the second embodiment, the first working distance L01 may be greater than the second working distance L02. In the third embodiment, the first working distance L01 may be smaller than the second working distance L02.

One of the technical features of the present invention is that by limiting the adjustment range of the working distance Lw, the X-ray module 11 and the image detection module 12 are prevented from colliding with the carrying bed 14 when moving and rotating (see details below).

Please refer to FIG. 2 at the same time, which is a block diagram of the first specific embodiment of the imaging system of the present invention. As shown in Figure 2, the imaging system 1 of the present invention also includes a storage unit 15, a human-machine interface 16, and a device electrically connected to the X-ray module 11, the image detection module 12, the storage unit 15 and the human-machine interface 16. Processing unit 10.

The processing unit 10 of the present invention mainly uses the machine platform 13 to identify the type of the load-bearing bed 14 when the load-bearing bed 14 is installed on the machine platform 13, and obtains a corresponding safety distance in the storage unit 15 according to the type of the load-bearing bed. Ls. In this embodiment, different types of carrying beds 14 have different sizes and therefore correspond to different safety distances Ls. In this embodiment, a larger size of the carrying bed 14 corresponds to a larger safety distance Ls.

Specifically, the safety distance Ls is a distance extending outward from the center of the load bed 14 . As long as the first working distance L01 is less than the safety distance Ls, the X-ray module 11 will collide with the bearing bed 14 during the imaging procedure. Moreover, as long as the second working distance L02 is less than the safety distance Ls, the image detection module 12 will collide with the bearing bed 14 during the imaging procedure.

For example, the types of load-bearing beds may include large-size load-bearing beds corresponding to the first safe distance, medium-size load-bearing beds corresponding to the second safety distance, and small-size load-bearing beds corresponding to the third safety distance, wherein the size of the large load-bearing bed is larger than that of the medium-size load-bearing bed. The size of the bed, the size of the medium-sized load-bearing bed is larger than the size of the small-sized load-bearing bed, and the first safety distance is larger than the second safety distance, and the second safety distance is larger than the third safety distance.

In the present invention, the safety distance Ls refers to when the processing unit 10 adjusts the working distance Lw according to the safety distance Ls (that is, the first working distance L01 and the second working distance L02 are respectively equal to the safety distance Ls), And the X-ray module 11 and the image detection module 12 are controlled to be closest to the carrying bed 14 but never collide with the carrying bed 14 (and the machine table 13) when performing the imaging procedure based on the safe distance Ls. In other words, as long as the first working distance L01 and the second working distance L02 are not less than the safety distance Ls, no matter how the X-ray module 11 and the image detection module 12 move, they will not collide with the carrying bed 14 and the machine table 13 .

In the first embodiment, the processing unit 10 can sense the weight of the carrying bed 14 when the carrying bed 14 is placed on the machine platform 13, and determine the type of the carrying bed 14 based on the weight. Generally speaking, the larger the size of the load-bearing bed 14, the heavier the weight. Therefore, the processing unit 10 can identify the type of the load-bearing bed 14 based on the measured weight.

In the second embodiment, the imaging system 1 can be equipped with an image capture module (not shown in the figure) on the machine 13, and the processing unit 10 can control the image capture module to capture the image of the bearing bed 14, and perform imaging on the image. After analysis, appearance information such as the size or appearance of the load-bearing bed 14 is obtained, and finally the type of the load-bearing bed 14 is determined based on the appearance information. In this embodiment, the carrying beds 14 of different sizes may have different appearances, so the processing unit 10 can identify the type of the carrying bed 14 through the appearance.

In the third embodiment, the machine platform 13 may be provided with a conductive interface 131 , and the carrying bed 14 may be provided with a connection interface 141 . When the loading bed 14 is disposed on the machine platform 13 , the loading bed 14 and the machine platform 13 are electrically connected through the connection interface 141 and the conductive interface 131 . In this embodiment, the processing unit 10 can receive the identification signal sent by the carrying bed 14 through the conductive interface 131 on the machine 13 and the connection interface 141 on the carrying bed 14, and then identify the carrying bed 14 according to the content of the identification signal. Types of load-bearing beds.

In the fourth embodiment, different load beds 14 are connected to the guide interface 131 on the machine 13 through the same connection interface 141, and send identification signals with different contents to the machine 13 through the connection interface 141, and use different identification signals to Signals indicate different carrier bed types.

In the fifth embodiment, different load beds 14 can be connected to the machine platform 13 through different connection interfaces 141, and the different connection interfaces 141 have different pin settings. Since the pin settings on the connection interface 141 are different, when the carrying bed 14 is installed on the machine platform 13, the electronic signals received by the conductor interface 131 from the connection interface 141 will be different. The processing unit 10 can determine the identification signal according to the content of the electronic signal received by the conductive interface 131, thereby identifying the type of the carrying bed.

It should be noted that the above are only specific implementation examples of the present invention, but should not be limited to the above manner.

Multiple imaging modes 151 are stored in the storage unit 15 , and the imaging system 1 provides and displays multiple imaging modes 151 through the human-machine interface 16 for the user to select. In this embodiment, different imaging modes 151 respectively correspond to different imaging distances. The imaging distance refers to the first imaging distance (Source to Object Distance, SOD), or the second imaging distance (Object to Image Distance, OID) between the image detection module 12 and the bearing bed 14. In other words, the imaging system 1 has different resolutions in each imaging mode 151 . When the user chooses to use different imaging modes 151 to perform the imaging procedure, images with different resolutions may ultimately be generated by the image detection module 12 .

In the present invention, the processing unit 10 can determine the safety distance Ls based on the type of the load-bearing bed 14 currently installed on the machine 13, and decide to display the appropriate imaging mode 151 on the human-machine interface 16 based on the safety distance Ls. for users to choose.

Specifically, after determining the safe distance Ls, the processing unit 10 accesses multiple imaging modes 151 in the storage unit 15 and disables one of the multiple imaging modes 151 whose imaging distance is smaller than the safe distance Ls or Multiple imaging modes 151 (ie, the first imaging distance is smaller than the safety distance Ls, or the second imaging distance is smaller than the safety distance Ls). If the first imaging distance and the second imaging distance of the multiple imaging modes 151 are both greater than the safety distance Ls, the processing unit 10 enables all imaging modes 151 . Finally, the processing unit 10 regards the one or more imaging modes 151 that have not been disabled as appropriate imaging modes 151 (ie, the imaging modes suitable for the currently configured bearing bed 14 ), and displays these appropriate imaging modes 151 on the human-machine interface 16 for the user to choose.

In one embodiment, the processing unit 10 displays all imaging modes 151 in the storage unit 15 on the human-machine interface 16 and only allows the user to select one or more imaging modes 151 that are not disabled. In another embodiment, the processing unit 10 only displays one or more imaging modes 151 that are not disabled on the human-machine interface 16 (ie, the user can select all imaging modes 151 displayed on the human-machine interface 16).

Through the above technical solution, the imaging system 1 can disable the imaging mode 151 if the imaging distance is too small (including the first imaging distance is too small or the second imaging distance is too small) based on the currently installed bearing bed 14, so that the user cannot The imaging mode 151 with too small imaging distance is selected on the human-machine interface 16 to avoid the problem that the X-ray module 11 and the image detection module 12 collide with the carrying bed 14 and/or the machine table 13 during the execution of the imaging procedure. The above-mentioned imaging distance is too small, which refers to the imaging distance that is insufficient relative to the size of the bearing bed 14 .

Please continue to refer to FIG. 3 , which is a first specific embodiment of the anti-collision flow chart of the present invention. The invention also discloses an anti-collision method for an imaging system (hereinafter referred to as the anti-collision method). Figure 3 is used to explain in detail the relevant steps of the anti-collision method. These steps are mainly composed of the steps shown in Figures 1 and 2 Imaging system 1 is executed.

First, when the user needs imaging, he needs to start the imaging system 1 of the present invention (step S10). When the imaging system 1 is started, the processing unit 10 first determines whether the bearing bed 14 has been installed on the machine table 13 (step S12). In the present invention, the imaging system 1 mainly illuminates the object to be tested (not shown in the figure) in the carrying bed 14 through the X-ray module 11, and the image detection module 12 detects the X-ray penetrating the object to be tested and generates corresponding image. If the carrying bed 14 has not been set on the machine table 13, the imaging system 1 will be in a standby state.

After the load-bearing bed 14 is installed on the machine platform 13, the processing unit 10 can identify the load-bearing bed type of the currently installed load-bearing bed 14 through the machine platform 13 (step S14). Specifically, the processing unit 10 can determine that the load bed 14 has been set to the machine platform 13 when the machine platform 13 detects the weight of the load bed 14, captures an image of the load bed 14, or receives an electronic signal from the load bed 14. superior. Moreover, the processing unit 10 can confirm the identification signal corresponding to the load-bearing bed 14 based on the weight, image or electronic signal, thereby identifying the load-bearing bed type of the load-bearing bed 14 (such as a large load-bearing bed, a medium load-bearing bed or a small load-bearing bed, etc. ). It should be noted that the above are only some specific implementation examples of the present invention and should not be limited to the above.

After step S14, the processing unit 10 further determines a safe distance Ls between the X-ray module 11 and the image detection module 12 relative to the carrying bed 14 according to the type of the carrying bed (step S16).

Specifically, the processing unit 10 queries the storage unit 15 according to the type of the currently set load bed 14, and reads a safety distance Ls corresponding to the type of the load bed in the storage unit 15. In this embodiment, the safety distance Ls refers to a distance extending outward with the carrying bed 14 as the center. When the processing unit 10 makes the first working distance L01 equal to the safety distance Ls, and makes the second working distance L02 equal to the safety distance Ls, that is, moves and rotates based on the safety distance Ls to implement the imaging procedure, the X-ray module 11 and the image detection module 12 will be closest to the load bed 14, but will never collide with the machine platform 13 and the load bed 14.

After step S16, the processing unit 10 further accesses multiple imaging modes 151 to be provided by the human-machine interface 16, and determines whether any of the multiple imaging modes has a specific imaging mode with an imaging distance smaller than the safety distance Ls (step S18 ). In step S18, the processing unit 10 is mainly used to determine whether the first imaging distance of each imaging mode is less than the safety distance Ls, and to determine whether the second imaging distance of each imaging mode is less than the safety distance Ls.

In this embodiment, the plurality of imaging modes 151 are stored in the storage unit 15, and each imaging mode 151 has a different imaging distance. The first imaging distance and the second imaging distance of each imaging mode 151 may be the same or different. When the imaging system 1 controls the X-ray module 11 and the image detection module 12 to perform imaging procedures based on different imaging modes 151, images with different resolutions can be obtained. Different imaging modes 151 can correspond to different resolution magnifications. The resolution magnification is equal to the resolution of the image detection module 12 divided by the resolution of the field of view in different imaging modes, and is also equal to the difference between the first imaging distance (SOD) and the third imaging mode. The relationship between the two imaging distances (OID). In this embodiment, the relational expression may be the sum of the first contrast distance (SOD) and the second contrast distance (OID) divided by the first contrast distance (SOD).

If in step S18, it is determined that all imaging distances of all imaging modes 151 in the storage unit 15 are greater than or equal to the safety distance Ls (for example, the first imaging distance is greater than or equal to the safety distance Ls, and the second imaging distance is also greater than or equal to safety distance Ls), the processing unit 10 does not perform any processing on the multiple imaging patterns 151 in the storage unit 15 .

On the contrary, if in step S18, it is determined that any imaging distance of one or more imaging modes 151 is smaller than the safety distance Ls (for example, the first imaging distance or the second imaging distance of a specific imaging mode is smaller than the safety distance Ls distance Ls), the processing unit 10 disables the specific imaging mode (step S20). After step S18 or step S20, the processing unit 10 controls the human-machine interface 16 to display one or more imaging modes 151 that are not disabled (step S22). In other words, as long as one of the first imaging distance and the second imaging distance used in an imaging mode 151 is smaller than the safety distance Ls obtained by the processing unit 10 , it means that this imaging mode is not suitable for the currently installed bearing bed 14 size, therefore the processing unit 10 will disable this inappropriate imaging mode 151.

In this embodiment, the specific imaging mode disabled in step S20 will not be displayed or dimmed on the human-machine interface 16 . In another embodiment, although the specific imaging mode disabled in step S20 is displayed on the human-machine interface 16, it cannot be selected by the user. Therefore, no matter which imaging mode 151 the user selects on the human-machine interface 16, when the imaging system 1 is operating, the X-ray module 11 and the image detection module 12 will not collide with the loading bed 14 and the machine table 13. .

Please continue to refer to FIGS. 4A and 4B , where FIG. 4A is a schematic diagram of a load-bearing bed according to a first specific embodiment of the present invention, and FIG. 4B is a schematic diagram of a human-machine interface according to a first specific embodiment of the present invention.

In the embodiment of FIG. 4A , the imaging system 1 uses a first bearing bed 21 . The first bearing bed 21 is installed on the machine platform 13 and is electrically connected to the conductive interface on the machine platform 13 through the connection interface 211 . 131. In this embodiment, the machine 13 receives an identification signal identifying the type of the first load bed 21 through the foot elements on the connection interface 211 (for example, indicating that the first load bed 21 is a large load bed). .

In the embodiment of FIG. 4B , the imaging system 1 can store at least four imaging modes 151 by default, including the first mode, the second mode, the third mode and the fourth mode. Among them, the resolution of the field of view (FOV) in the first mode is 44.9 μm, the resolution of the field of view (FOV) in the second mode is 22.5 μm, the resolution of the field of view (FOV) in the third mode is 15 μm, and The resolution of the field of view (FOV) of the fourth mode is 9 μm. The resolution of the field of view (FOV) refers to the size of each pixel (pixel) that the image detection module 12 can generate under the corresponding imaging mode 151, and this field of view is related to the imaging distance used by each imaging mode 151. (such as the first contrast distance or the second contrast distance).

For example, assuming that the resolution of the image detection module 12 is 75 μm and the first mode is selected, the resolution magnification is approximately 1.6 times, then (the first imaging distance (SOD) + the second imaging distance (OID)) is divided by the A contrast distance (SOD) must be equal to 1.6. Through the above relational expression, there are corresponding imaging distances (first imaging distance and second imaging distance) in each imaging mode.

In this embodiment, due to the large size of the first bearing bed 21 (which is a large bearing bed), the imaging distance (first imaging distance (SOD), second imaging distance (SOD)) in the second mode, the third mode and the fourth mode The imaging distance (OID) is smaller than the safety distance Ls corresponding to the first load-bearing bed 21. Therefore, after the first load-bearing bed 21 is installed on the machine table 13, the processing unit 10 will perform the imaging according to the safety distance Ls corresponding to the first load-bearing bed 21. The plurality of imaging modes 151 provided in the imaging system 1 are filtered and disable the second mode, the third mode and the fourth mode if the imaging distance (first imaging distance, second imaging distance) is too small.

As shown in FIG. 4B , if the first bearing bed 21 is used on the imaging system 1 , the user can only select the first mode on the human-machine interface 16 . Since the imaging distance (first imaging distance (SOD), second imaging distance (OID)) used in the first mode is greater than the corresponding safety distance Ls of the first bearing bed 21, when the imaging system 1 controls the X-ray module 11 and the image When the detection module 12 performs the imaging procedure based on the imaging distance of the first mode, it can ensure that the X-ray module 11 and the image detection module 12 will never collide with the first carrying bed 21 and the machine table 13 .

Please continue to refer to FIGS. 5A and 5B , where FIG. 5A is a schematic diagram of a load-bearing bed according to a second specific embodiment of the present invention, and FIG. 5B is a schematic diagram of a human-machine interface according to a second specific embodiment of the present invention.

In the embodiment of FIG. 5A , the imaging system 1 uses a second bearing bed 22 , which is electrically connected to the conductive interface 131 of the machine platform 13 through the connection interface 221 . In this embodiment, the machine 13 identifies the type of the second load-bearing bed 22 (for example, a medium-sized load-bearing bed) through the setting of the foot elements on the connection interface 221 .

Next, as shown in FIG. 5B , the size of the second load-bearing bed 22 (which is a medium-sized load-bearing bed) is smaller than the first load-bearing bed 21 , and only the imaging distances of the third mode and the fourth mode (the first imaging distance, the second imaging distance ) will be less than the safety distance Ls corresponding to the second load-bearing bed 22 . Therefore, after the second carrying bed 22 is installed on the machine platform 13, the processing unit 10 will disable the imaging distance (the first imaging distance (SOD)), the second imaging distance ( OID)) is too small for the third and fourth modes.

As shown in FIG. 5B , if the second bearing bed 22 is used on the imaging system 1 , the user can only select the first mode or the second mode on the human-machine interface 16 . Since the imaging distances (first imaging distance (SOD), second imaging distance (OID)) used in the first mode and the second mode are both greater than the corresponding safety distance Ls of the second bearing bed 22, when the imaging system 1 controls When the X-ray module 11 and the image detection module 12 perform the imaging procedure based on the imaging distance in the first mode or the second mode, it can be ensured that the X-ray module 11 and the image detection module 12 will never collide with the second carrying bed 22 and the machine. Taiwan 13.

Please continue to refer to FIGS. 6A and 6B , where FIG. 6A is a schematic diagram of a load-bearing bed according to a third specific embodiment of the present invention, and FIG. 6B is a schematic diagram of a human-machine interface according to a third specific embodiment of the present invention.

In the embodiment of FIG. 6A , the imaging system 1 uses a third bearing bed 23 , which is electrically connected to the conductive interface 131 of the machine platform 13 through the connection interface 231 . In this embodiment, the machine platform 13 identifies the type of the third load-bearing bed 23 (for example, a small load-bearing bed) through the setting of the foot elements on the connection interface 231 .

Next, as shown in FIG. 6B , the third bearing bed 23 (which is a small bearing bed) is smaller in size than the first bearing bed 21 and the second bearing bed 22 , and the imaging distances of all imaging modes in the storage unit 15 (first The imaging distance (SOD) and the second imaging distance (OID) are both greater than or equal to the safety distance Ls corresponding to the third bearing bed 23 . Therefore, after the third carrying bed 23 is installed on the machine platform 13, the processing unit 10 will not disable any imaging mode (or, the processing unit 10 will enable all imaging modes in the storage unit 15).

As shown in FIG. 6B , if the third bearing bed 23 is used on the imaging system 1 , the user can select all imaging modes supported by the imaging system 1 on the human-machine interface 16 , and regardless of the X-ray module 11 and image detection The module 12 executes the imaging procedure based on the imaging distance of which imaging mode, and will not collide with the third carrying bed 23 and the machine table 13 .

It is worth mentioning that if the X-ray module 11 and the image detection module 12 perform the imaging procedure based on the fourth mode, the imaging speed will be slower, but the resolution of the generated image will be higher. If the X-ray module 11 and the image detection module 12 perform the imaging procedure based on the first mode, the imaging speed will be faster, but the resolution of the generated image will be lower. Therefore, the user can select an appropriate imaging mode 151 on the human-machine interface 16 according to actual needs, and does not have to worry about the problem of the X-ray module 11/image detection module 12 colliding with the loading bed 14 or the machine table 13.

In this embodiment, the types of load-bearing beds include at least large load-bearing beds (such as the first load-bearing bed 21), medium-sized load-bearing beds (such as the second load-bearing bed 22) and small load-bearing beds (such as the third load-bearing bed 22). 23), among which, the safety distance Ls of the large load-bearing bed is greater than the safety distance Ls of the medium-sized load-bearing bed, and the safety distance Ls of the medium-sized load-bearing bed is greater than the safety distance Ls of the small load-bearing bed. When the processing unit 10 recognizes that the currently installed bearing bed 14 is a small bearing bed, it will enable all imaging modes 151 supported by the imaging system 1 . In other words, the smallest size of the bearing bed 14 that can be used by the imaging system 1 needs to be applicable to all imaging modes 151 stored in the storage unit 15 (that is, the safety distance Ls corresponding to the smallest size of the bearing bed 14 needs to be smaller than all the first imaging distance and the second imaging distance of the imaging mode 151).

Please continue to refer to FIG. 7 , which is a first specific embodiment of the imaging flow chart of the present invention. FIG. 7 is used to explain in detail the execution steps of the imaging system 1 of the present invention when the user selects any imaging mode 151 that is not disabled.

As shown in Figure 7, after a carrier bed 14 is installed and the human-machine interface 16 displays one or more imaging modes 151 that are not disabled, the imaging system 1 can accept external operations from the user through the human-machine interface 16. And select an imaging mode 151 that is not disabled based on the content of the external operation (step S30).

After the user selects any imaging mode 151, the processing unit 10 obtains the imaging distance of the selected imaging mode 151 (step S32), and adjusts the X-ray module 11 and the image detection module 12 relative to the bearing bed according to the imaging distance. The working distance Lw is 14 (step S34).

Specifically, in step S34, the processing unit 10 adjusts the positions of the X-ray module 11 and the image detection module 12 (for example, the positions on the motor shaft) according to the obtained imaging distance, so that the adjusted X-ray module 11 and The first working distance L01 between the bearing beds 14 will be equal to the first imaging distance of the selected imaging mode 151 , and the second working distance L02 between the image detection module 12 and the bearing bed 14 will be equal to the selected imaging mode. The second contrast distance is 151. Moreover, the adjusted first working distance L01 and the adjusted second working distance L02 are respectively greater than or equal to the safety distance Ls corresponding to the load bed 14 .

After step S34, the processing unit 10 can further control the X-ray module 11 and the image detection module 12, so that the X-ray module 11 and the image detection module 12 are based on the adjusted working distance Lw (including the adjusted first working distance L01 and the adjusted second working distance L02) to execute the imaging procedure (step S36). In the imaging procedure, the X-ray module 11 and the image detection module 12 mainly rotate clockwise or counterclockwise with the carrying bed 14 or the machine table 13 as the center, and perform X-ray emission and detection. The corresponding image is thus generated.

Please continue to refer to FIG. 8 , which is a schematic diagram of the imaging system according to the second specific embodiment of the present invention. As shown in FIG. 8 , when the imaging system 1 has just started or entered the standby mode, there is an initial working distance Lw between the X-ray module 11 and the image detection module 12 . Specifically, when the imaging system 1 is first started, an initial first working distance L11 is spaced between the Initial second working distance L12.

After a load-bearing bed 14 is installed on the machine platform 13, the processing unit 10 can obtain a safety distance Ls corresponding to the load-bearing bed 14. Then, the processing unit 10 executes a filtering program to display on the human-machine interface 16 that the conditions are met (ie, the first imaging distance is greater than or equal to the safety distance Ls, and the second imaging distance is also greater than or equal to the safety distance Ls. ) of all imaging modes151.

When the user selects any imaging mode 151 on the human-machine interface 16, the processing unit 10 adjusts the positions of the X-ray module 11 and the image detection module 12 according to the imaging distance of the selected imaging mode 151, so that the X-ray module 11 and the image detection module 12 are separated by an adjusted working distance Lw.

Specifically, the imaging distance of the imaging mode 151 can be the first imaging distance between the X-ray module 11 and the bearing bed 14 , or the second imaging distance between the bearing bed 14 and the image detection module 12 . The processing unit 10 The position of the X-ray module 11 is mainly adjusted according to the first imaging distance of the selected imaging mode 151, so that the X-ray module 11 and the load bed 14 are separated by an adjusted first working distance L21, and the processing unit 10 is based on the selected imaging mode. The second imaging distance of the selected imaging mode 151 is used to adjust the position of the image detection module 12 so that the bearing bed 14 and the image detection module 12 are separated by an adjusted second working distance L22. And the first imaging distance of the selected imaging mode 151 (ie, the adjusted first working distance L21) must be greater than or equal to the safety distance Ls, and the second imaging distance (ie, the adjusted second working distance L22) is also It must be greater than or equal to the safety distance Ls.

The imaging procedure is executed based on the adjusted working distance (including the adjusted first working distance L21 and the adjusted second working distance L22). The image finally generated by the image detection module 12 can have the resolution corresponding to the imaging mode 151 selected by the user. Rate.

Through the above-mentioned imaging system and anti-collision method of the present invention, the user cannot select an imaging mode with inappropriate distance or resolution during operation. Therefore, the X-ray module or the image detection module can be effectively prevented from colliding with the load-bearing bed, which is beneficial to the user. Quite convenient for readers.

The above are only preferred specific embodiments of the present invention and cannot therefore limit the patent scope of the present invention. Any person of ordinary skill in the technical field can make various modifications without departing from the spirit and scope of the present invention. and modifications, but these changes and modifications should be included in the scope of the claimed protection.

Claims (12)

1. A radiography system with a load bed collision avoidance mechanism, comprising:

a machine;

the bearing bed is detachably arranged on the machine;

the X-ray module is arranged on one side of the machine table and is separated from the bearing bed by a first working distance;

the image detection module is arranged on the other side of the machine table opposite to the X-ray module and is separated from the bearing bed by a second working distance;

the processing unit is electrically connected with the machine table, the X-ray module and the image detection module and is used for identifying a type of the bearing bed through the machine table; and

A man-machine interface, providing a plurality of contrast modes, wherein the contrast modes respectively correspond to different imaging distances, and the imaging distances are a first imaging distance of the X-ray module relative to the bearing bed or a second imaging distance of the bearing bed relative to the image detection module;

the processing unit determines a safe distance between the X-ray module and the image detection module relative to the carrying bed according to the type of the carrying bed, and disables a specific contrast mode when the first imaging distance or the second imaging distance of the specific contrast mode is smaller than the safe distance.

2. The contrast system with a loading bed collision avoidance system of claim 1, wherein when the processing unit controls the X-ray module and the image detection module to perform a contrast procedure, the first working distance and the second working distance are respectively adjusted to be the safe distances, wherein the safe distances are distances that the X-ray module and the image detection module are closest to but do not collide with the loading bed.

3. The contrast system with a collision avoidance mechanism of claim 1 wherein the machine has a docking interface, the load bed has a connection interface, the machine is electrically connected to the load bed through the docking interface and the connection interface, the processing unit receives an identification signal of the load bed through the docking interface and the connection interface, and identifies a load bed type of the load bed according to a content of the identification signal.

4. The contrast system with a loading table collision avoidance system of claim 1, wherein the human-machine interface accepts an external operation to select one of the one or more contrast modes that is not disabled, the processing unit adjusts the first working distance of the X-ray module relative to the loading table according to the first working distance of the selected contrast mode, adjusts the second working distance of the image detection module relative to the loading table according to the second working distance of the selected contrast mode, and controls the X-ray module and the image detection module to perform an imaging procedure based on the adjusted first working distance and the adjusted second working distance, wherein the adjusted first working distance is equal to the first imaging distance, and the adjusted second working distance is equal to the second imaging distance.

5. The contrast system with a bed collision avoidance mechanism of claim 1 wherein the bed categories comprise a large bed, a medium bed and a small bed, the safe distance of the large bed is greater than the safe distance of the medium bed, the safe distance of the medium bed is greater than the safe distance of the small bed, and the processing unit enables all of the contrast modes when identifying the bed as the small bed.

6. The contrast system with a loading table collision avoidance system of claim 1, wherein the processing unit is configured to correspond to a plurality of resolution magnifications according to the contrast mode, the resolution magnifications being equal to a relationship between the first imaging distance and the second imaging distance of the contrast mode.

7. An anti-collision method of a radiography system is applied to the radiography system, the radiography system comprises a machine table, a bearing bed detachably arranged on the machine table, an X-ray module arranged on one side of the machine table and separated from the bearing bed by a first working distance, an image detection module arranged on the other side of the machine table opposite to the X-ray module and separated from the bearing bed by a second working distance, a processing unit and a man-machine interface, the anti-collision method comprises the following steps:

a) When the bearing bed is arranged on the machine table, the processing unit identifies a bearing bed type of the bearing bed through the machine table;

b) The processing unit determines a safe distance between the X-ray module and the image detection module relative to the bearing bed according to the type of the bearing bed;

c) The processing unit accesses a plurality of contrast modes provided by the man-machine interface, wherein the contrast modes respectively correspond to different imaging distances, and the imaging distances are a first imaging distance of the bearing bed relative to the X-ray module or a second imaging distance of the bearing bed relative to the image detection module;

d) The processing unit judges whether a specific contrast mode with the first contrast distance or the second contrast distance smaller than the safety distance exists in the plurality of contrast modes;

e) Disabling, by the processing unit, the particular contrast mode when the particular contrast mode is present among the plurality of contrast modes; and

f) The processing unit controls the man-machine interface to display one or more of the contrast modes that are not disabled.

8. The method of claim 7, wherein when the processing unit controls the X-ray module and the image detection module to perform a contrast procedure, the first working distance and the second working distance are respectively adjusted to be the safe distance, and the safe distance is a distance that the X-ray module and the image detection module are closest to but do not collide with the loading bed.

9. The method of claim 7, wherein the machine has a docking interface, the bed has a connection interface, and the machine is electrically connected to the bed through the docking interface and the connection interface; in the step a), the processing unit receives an identification signal of the carrying bed through the guide interface and the connection interface, and identifies the type of the carrying bed according to the content of the identification signal.

10. The method of anti-collision for a contrast system of claim 7, further comprising the steps of:

g) The human-machine interface receiving an external operation to select one of the one or more contrast modes that is not disabled;

h) The processing unit obtains the first imaging distance and the second imaging distance of the selected imaging mode;

i) The processing unit adjusts the first working distance of the X-ray module relative to the bearing bed according to the first imaging distance, and adjusts the second working distance of the image detection module relative to the bearing bed according to the second imaging distance, so that the adjusted first working distance is equal to the first imaging distance, and the adjusted second working distance is equal to the second imaging distance; and

j) The processing unit controls the X-ray module and the image detection module to execute a shading program based on the adjusted first working distance and the adjusted second working distance.

11. The method of claim 7, wherein the type of loading bed comprises a large loading bed, a medium loading bed and a small loading bed, the safe distance of the large loading bed is greater than the safe distance of the medium loading bed, the safe distance of the medium loading bed is greater than the safe distance of the small loading bed, and the processing unit enables all of the imaging modes when recognizing the loading bed as the small loading bed.

12. The method of claim 7, wherein the contrast modes respectively correspond to different resolution magnifications, the resolution magnifications being equal to a relationship between the first contrast distance and the second contrast distance of the contrast modes.