KR20220081630A - Radiation detecting system - Google Patents

Abstract

A radiation detection system according to an embodiment may include a plurality of sensors for detecting backscattered radiation, and a housing in which the plurality of sensors are disposed, and the plurality of sensors may be disposed on one side of the housing, , The housing may have a plurality of collimation grooves to which the plurality of sensors are exposed, respectively, and the housing may be rotated or moved linearly.

Description

RADIATION DETECTING SYSTEM

A radiation detection system is disclosed. Specifically, a radiation detection system capable of detecting a plurality of scattered rays generated in response to an object is disclosed.

A radiographic imaging device is a device that obtains a transmission image using radioactive isotopes, and is widely used in nuclear medicine, non-destructive testing, security testing, luggage testing, and material analysis.

A detector among radiation imaging apparatuses is a device that receives radiation that is irradiated from a radiation source when radiation is measured, passes through an object or reacts/collides with the object and is backscattered.

A radiation detector uses a material that interacts with radiation, converts radiation that passes through or backscatters into a signal, and collects the signals to measure the radiation.

Since radiation interacts with all materials, the detector material for radiation detection can in principle consist of all materials in the world, and a specific material can be selected in consideration of the measurement purpose, sensitivity, or efficiency. Reaction types with radioactive materials used in radiation detectors include ionization (ionization) reaction, excitation action (energy excitation), chemical action, luminescence action, biological change, and nuclear reaction.

An object according to an embodiment is to provide a radiation detection system capable of collecting a plurality of radiation signals while using one radiation source.

In addition, another object according to an embodiment is to provide a radiation detection system capable of imaging a tomography having a plurality of depths at the same time.

In addition, another object according to an embodiment is to provide a radiation detection system having a structure to easily detect radiation at a low speed.

In addition, another object according to an embodiment is to provide a radiation detection system capable of imaging tomography of various heights at the same time.

A radiation detection system according to an embodiment for achieving the above object may include a plurality of sensors for detecting backscattered radiation, and a housing in which the plurality of sensors are disposed, wherein the plurality of sensors are one of the housings. It may be disposed on the side, the housing may have a plurality of collimation grooves to which the plurality of sensors are exposed, respectively, and the housing may be rotated or moved linearly.

In addition, the housing of the radiation detection system according to an embodiment is formed in a circular shape and can be rotated around a circular center of the housing, and the sensor is provided on an inner circumferential surface of the housing along the rotational direction of the housing. can be placed.

In addition, the housing of the radiation detection system according to an embodiment may be formed in a cylindrical shape and may be rotated about a circular center of a cross-section of the housing as a central axis, and a plurality of the sensors may be disposed on an inner circumferential surface of the housing.

In addition, the plurality of sensors of the radiation detecting system according to an embodiment may be disposed along the height direction of the cylindrical shape.

In addition, the plurality of sensors of the radiation detecting system according to an embodiment may be arranged to be continuous along the rotational direction of the housing.

In addition, the housing of the radiation detection system according to an embodiment may be formed in a plate shape and may be cranked, and a plurality of the sensors may be disposed on the plate-shaped surface.

In addition, a plurality of the sensors of the radiation detection system according to an embodiment may be arranged in a grid form,

The collimation groove may be moved according to the movement of the housing, so that the plurality of sensors may be cross-exposed.

In addition, the plurality of sensors of the radiation detecting system according to an embodiment may be arranged at regular intervals in one direction.

In addition, each of the plurality of sensors of the radiation detection system according to an embodiment may be disposed behind each of the plurality of collimation grooves.

In addition, at least one of the plurality of sensors of the radiation detecting system according to an embodiment may simultaneously detect a plurality of radiation beams that are backscattered after being irradiated to the target object by a radiation source.

According to the radiation detection system according to an embodiment, it is possible to provide a radiation detection system capable of collecting a plurality of radiation signals at the same time.

In addition, according to the radiation detection system according to an embodiment, it is possible to provide a radiation detection system capable of simultaneously radiographically imaging a tomography having a plurality of depths.

In addition, according to the radiation detecting system according to an embodiment, it is possible to provide a radiation detecting system having a structure for easily detecting radiation at a low speed.

In addition, according to the radiation detection system according to an embodiment, it is possible to provide a radiation detection system capable of imaging tomography of various heights at the same time.

1A-1C illustrate radiation received into a collimation groove as the radiation detection system rotates according to an embodiment.
2A and 2B show a cross-sectional view and a side view of a radiation detection system according to an embodiment.
3 shows a side view of a radiation detection system according to another embodiment.
4 is a conceptual diagram of a radiation detection system according to another embodiment.

Hereinafter, the radiation detection system according to the present invention will be described in more detail with reference to the drawings. The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and scope of the present invention It should be understood to include water or substitutes.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise.

When a component is referred to as being “connected” or “connected” to another component in the present specification, it may be directly connected or connected to the other component, but other components may exist in between. It should be understood that there may be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

In addition, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and includes one or more other features or numbers. , it should be understood that it does not preclude the possibility of the presence or addition of steps, operations, components, parts, or combinations thereof.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

Components included in one embodiment and components having a common function will be described using the same names in other embodiments. Unless otherwise stated, descriptions described in one embodiment may be applied to other embodiments as well, and detailed descriptions within the overlapping range will be omitted.

1A to 1C show radiation received into a collimation groove according to rotation of the radiation detection system according to an embodiment, and FIGS. 2A and 2B are cross-sectional views and side views of the radiation detection system according to an embodiment show

3 is a side view of a radiation detecting system according to another exemplary embodiment, and FIG. 4 is a conceptual diagram of a radiation detecting system according to another exemplary embodiment.

1A to 2B , the radiation detecting system according to an embodiment may include a housing 100 and a sensor 200 .

The housing 100 may be formed in a cylindrical shape, and may preferably be made of a material that shields radiation. A plurality of collimation grooves may be formed on the outer peripheral surface of the housing 100 to pass through the housing 100 .

The radiation beam emitted from the radiation source collides with the target object O and is backscattered, and the backscattered radiation beam may reach the housing 100 and enter the collimation groove.

A plurality of sensors 200 may be provided, and the plurality of sensors 200 may be attached to the inner circumferential surface of the cylindrical housing. In particular, these sensors may be attached at positions corresponding to the collimation grooves.

Accordingly, the radiation beam backscattered from the object O may pass through the collimation groove of the housing 100 and reach the sensor 200 to be changed into a detection signal, and may be used to acquire a scattering image.

A plurality of sensors may be disposed in the longitudinal direction of the cylindrical housing 100 with reference to FIG. 2B , and the cylindrical housing 100 rotates about the center of the cross-section as the central axis, that is, the center of the cross-section circle as the central axis. can be

1A to 1B , the longitudinal axis of the cylindrical housing 100 and the radiation source backscattered from the object O may be disposed to cross each other. In this case, a plurality of sensors 200 may be disposed along the rotation direction of the housing 100 . That is, as shown in FIG. 2A , the plurality of sensors 200 may be disposed to be separated from each other along the inner circumferential surface of the circle.

Alternatively, referring to FIG. 3 , the cylindrical housing 100 according to another embodiment may be disposed in a direction perpendicular to the cylindrical housing 100 illustrated in FIGS. 1A to 1B .

That is, the housing 100 according to another exemplary embodiment shown in FIG. 2B may be disposed in an inclined shape with central axes in the longitudinal direction directed upward and downward.

The housing 100 according to another exemplary embodiment shown in FIG. 2 may be disposed along the height direction of the cylindrical housing 100 . That is, the plurality of sensors 200 may be inclined with respect to the ground, and the respective sensors 200 may have different heights.

Although the housing 100 is formed in a cylindrical shape in the drawings and detailed description of the present application, the shape is not necessarily limited to a cylindrical shape. For example, although not shown in the drawings of the present application, the housing may be formed in a plate shape, and the surface of the plate may be disposed to face the object. In addition, rotational motion with the center of the plate as the central axis or linear motion using a clanking structure can be performed.

Preferably, the sensors 200 may be arranged to be spaced apart, and the sensors may also be arranged in a grid form. The arrangement of these sensors and the shape of the housing cover all structures that are easy to be arranged by those skilled in the art.

For example, referring to FIG. 4 , the cylindrical housing 100 may have a central axis of a circle disposed in a direction perpendicular to the ground. In this case, the plurality of collimation grooves are relative to each other so that the backscattered radiation beams are easily introduced. Depending on the height, the inclination of the collimation groove may be formed differently.

Specifically, the collimation grooves are inclined at different angles to face a plurality of depths D1, D2, D3?? may be formed. Alternatively, the plurality of collimation grooves may be formed so that the cross section gradually becomes wider toward the outer circumferential surface of the circle.

As above, the plurality of sensors 200 may be arranged so as to be continuous along the rotational direction of the housing 100 , and the shape or arrangement of the housing 100 is such that each of the sensors 200 may face the target object O. If yes, it is not very limited.

Hereinafter, a radiation detecting system according to various embodiments will be described in detail with reference to FIGS. 1A to 4 .

1A shows an initial form of a radiation detection system according to an exemplary embodiment. 1A shows a state in which radiation irradiated in a direction perpendicular to the target object O is backscattered at each depth (D1, D2, D3...Dn) in the direction penetrating the target object O, , in particular, shows backscattering from D1 and Dn.

Specifically, with reference to FIG. 1A , in a three-dimensional xyz coordinate system that views the ground as an x-y plane, a radiation source (below, preferably an x-ray source) may be parallel to the x-axis, and the central axis of the housing 100 is the y-axis It can be parallel to (the x-y plane corresponds to the ground).

The x-ray source can be irradiated forward and reach the target object O, and from the moment it collides with the target object O, some x-ray sources are irradiated backward (the direction in which the x-ray source is irradiated; that is, the direction of the x-ray source can be scattered in the opposite direction to the irradiation direction). In this case, the backscattered x-rays may be refracted obliquely in the z-direction, and thus may also be scattered in the direction of the housing 100 .

Some of the x-ray sources traveling forward without being backscattered may be scattered at each of a plurality of depths of the object O, that is, at positions traveling in the x-axis direction on the xyz coordinate system above. These scattered x-rays may be directed towards the housing 100 .

Some of the scattered X-rays reaching the housing 100 may pass through the collimation groove, and the scattered X-rays passing through the collimation groove may be detected by the sensor 200 .

These scattered x-rays can be simultaneously detected at a plurality of sensor locations. Referring to FIG. 1A , in the initial case where the rotation angle of the housing 100 is 0 degrees, scattered x-rays scattered at positions D1 and Dn among scattered radiation may enter the collimation groove, and accordingly, the collimation groove Scattered x-rays may be detected at the sensor 200 located at the back.

1B shows a state in which the housing 100 of the radiation detection system according to an embodiment is rotated by 7 degrees. 1b shows a state in which radiation irradiated in a direction perpendicular to the target object O is backscattered at each depth (D1, D2, D3...Dn) in the direction penetrating the target object O, , in particular, shows backscattering at D3 and Dn+1.

Specifically, referring to FIG. 1B , as in FIG. 1A , the x-ray source may be parallel to the x-axis, and the central axis of the housing 100 may be parallel to the y-axis.

After colliding with the object O, some of the scattered X-rays reaching the housing 100 may pass through the collimation groove, and the scattered X-rays passing through the collimation groove are detected by the sensor 200 . can be

These scattered x-rays can be simultaneously detected at a plurality of sensor locations. Referring to FIG. 1B , when the housing 100 is rotated by 7 degrees, scattered x-rays scattered at positions D3 and Dn+1 among scattered radiation may enter the collimation groove, and accordingly, the collimation groove Scattered x-rays may be detected at the sensor 200 located at the back.

1C shows a state in which the housing 100 of the radiation detection system according to an embodiment is rotated by 5 degrees. Figure 1c shows a state in which the radiation irradiated in a direction perpendicular to the target object (O) is backscattered at each depth (D1, D2, D3...Dn) in the direction penetrating the target object (O), , in particular, shows backscattering at D4.

Specifically, referring to FIG. 1C , as in FIGS. 1A and 1B , the x-ray source may be parallel to the x-axis, and the central axis of the housing 100 may be parallel to the y-axis.

After colliding with the object O, some of the scattered X-rays reaching the housing 100 may pass through the collimation groove, and the scattered X-rays passing through the collimation groove are detected by the sensor 200 . can be

These scattered x-rays can be simultaneously detected at a plurality of sensor locations. Referring to FIG. 1C , when the housing 100 is rotated by 5 degrees, scattered x-rays scattered at the D4 position among the scattered radiation may enter the collimation groove, and accordingly, the sensor located behind the collimation groove Scattered x-rays can be detected at 200 .

In the present invention, the sensor 200 and the housing 100 are illustrated and described as being rotated at the same time, but are not necessarily limited thereto. The housing 100 may be moved (rotated or linear motion) while the position of the sensor 200 is independently fixed, and the sensor 200 may be moved (rotated or linear motion).

Referring to FIG. 4 , the radiation detecting system according to another embodiment may receive the scattered x-ray signal even when the target object O is irradiated upward, downward, or laterally.

Specifically, with reference to FIG. 4 , in a three-dimensional xyz coordinate system that views the ground in the x-z plane, the x-ray source may be inclined forward and upward in parallel to the x-z plane, and the central axis of the housing 100 is the z-axis can be parallel to

4 shows a state in which x-rays irradiated in the direction of the object O are backscattered at respective depths D1, D2, D3...Dn in the direction penetrating the object O. .

In more detail, referring to FIG. 4 , the x-ray source may be irradiated to the target object O to reach the target object O, and from the moment it collides with the target object O, some of the x-ray sources are rearward can be spawned by In this case, the backscattered scattered x-rays may be inclinedly refracted based on the x-ray source on the x-z plane, and thus may be scattered in the direction of the housing 100 .

The x-ray sources that are not backscattered and travel forward are at each of a plurality of depths of the object O, that is, when the x-ray sources are inclined forward and upward in the x-z plane as shown in FIG. 4, each of the objects A portion of the object O may be scattered at a depth of the object O, that is, a position that proceeds in the x-axis direction and progresses in the z-axis direction on the above xyz coordinate system. These scattered x-rays may be directed towards the housing 100 .

Some of the scattered x-rays reaching the housing 100 may pass through the collimation groove, and some of the other scattered x-rays may impinge on the outer peripheral surface of the housing 100 , as shown in FIG. 4 . Also, some of the scattered x-rays may impinge on the inner surface of the collimator groove. Accordingly, only some scattered rays may reach the sensor 200 and may be measured through the sensor 200 . These scattered x-rays can be simultaneously detected at a plurality of sensor locations.

The radiation detection system described above can collect a plurality of radiation signals at the same time, can radiography a tomography of a plurality of depths at the same time, can easily detect radiation even with low-speed rotation, and can simultaneously radiography tomography of various heights. may be

The radiation detection system is not limited to the configuration and method of the above-described embodiments, and the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

As described above, in the embodiment of the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but these are only provided to help a more general understanding of the present invention, and the present invention is limited to the above embodiments Various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains. For example, the described techniques are performed in an order different from the described method, and/or the described components of structures, devices, etc. are combined or combined in a different form than the described method, or other components or equivalents are used. Appropriate results can be achieved even if substituted or substituted by Accordingly, the spirit of the present invention should not be limited to the described embodiments, and not only the claims described below, but also all of the claims and all equivalents or equivalent modifications will fall within the scope of the spirit of the present invention.

100: housing
200: sensor
O: object

Claims (10)

a plurality of sensors for detecting backscattered radiation; and
a housing in which the plurality of sensors are disposed;
including,
The plurality of sensors are disposed on one side of the housing,
The housing includes a plurality of collimation grooves to which the plurality of sensors are respectively exposed,
wherein the housing is rotated or moved linearly.
The method of claim 1,
The housing is formed in a circular shape and is rotated around the circle center of the housing as a central axis,
A plurality of the sensors are disposed along the rotational direction of the housing on the inner circumferential surface of the housing, the radiation detecting system.
The method of claim 1,
The housing is formed in a cylindrical shape and is rotated about a circular center of the cross section of the housing as a central axis,
A plurality of the sensors are disposed on the inner circumferential surface of the housing, the radiation detection system.
4. The method of claim 3,
A plurality of the sensors are disposed along the height direction of the cylinder, radiation detection system.
4. The method of claim 3,
A plurality of the sensors are arranged to be continuous along the rotational direction of the housing, the radiation detection system.
The method of claim 1,
The housing is formed in a plate shape and cranked,
A plurality of the sensors are disposed on the plate-shaped surface, radiation detection system.
The method of claim 1,
A plurality of the sensors are arranged in a grid form,
The collimation groove is moved according to the movement of the housing, so that a plurality of the sensors are cross-exposed.
The method of claim 1,
A plurality of the sensors are arranged at regular intervals in one direction, radiation detection system.
The method of claim 1,
each of the plurality of sensors is disposed behind each of the plurality of collimation grooves.
The method of claim 1,
At least one of the plurality of sensors simultaneously detects a plurality of radiation beams that are backscattered after being irradiated to the object by a radiation source, respectively.

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