TWI706154B - Radiation beam detector - Google Patents

Abstract

The present disclosure provides a radiation beam detector, including: a scintillator a scintillator including a front surface, a rear surface opposite the front surface, and a first side surface adjacent to the front surface and the rear surface, where a radiation beam is incident at an angle to the front surface of the scintillator along a linear path; and a first light receiver disposed along a first direction on the first side surface of the scintillator for acquiring a first optical signal in the first direction generated by the radiation beam entering the scintillator, and converting the first optical signal into a first electrical signal, where the first light receiver is disposed at a position that does not interfere with an extension line of the linear path of the radiation beam.

Description

Radiation beam detection device

The present disclosure relates to a detection device, in particular to a radiation beam detection device.

Radiology technology has been widely used in modern medicine, such as radiotherapy, radiodiagnosis, and nuclear medicine. The principle of radiotherapy is to use high-energy radiation to interact with tumor cells, so that tumor cells are dissociated or excited to produce toxic free radicals, which in turn cause tumor cell damage, or directly use the radiation energy released by ionizing radiation to cause the DNA of cancer cells. A key break has occurred. The amount of radiation dose will directly affect the degree of damage to tumor cells and normal tissues after the radiation enters the patient. Therefore, the radiation parameters of radiotherapy will cooperate with regular beam quality assurance operations to ensure that the error between the radiation dose received by the patient and the prescribed dose is less than the allowable range of clinical treatment. In other words, radiotherapy technology needs to cooperate with prudent quality assurance measures and dose verification to ensure the patient's therapeutic effect.

The control of radiation dose and beam parameters can be achieved by beam monitoring, so the detection device for monitoring the radiation beam is a necessary equipment for radiotherapy. Existing radiation beam detection devices include gas-filled detectors, scintillation detectors, and semiconductor detectors. The gas-filled detector is equipped with an ion chamber, which uses the gas in the cavity to generate charges when the radiation passes through the ion chamber, and uses the external circuit to capture the generated charges to measure radiation dose and beam parameters . The scintillation detector is equipped with a scintillator. Specifically, please refer to Fig. 1, which shows a schematic diagram of a scintillation detector 1 in the prior art. The scintillation detector 1 includes a scintillator 11 and a receiver 12. After the radiation beam 13 enters the scintillator 11, the scintillator 11 generates light and collects the light signal generated by the scintillator 11 by the receiver 12 arranged at the rear. However, the radiation beam 13 passes through the scintillator 11 and directly irradiates the receiver 12 behind the scintillator 11, making the receiver 12 prone to failure due to radiation damage. Furthermore, the radiation beam 13 passing through the receiver 12 will also cause the detection quality of the radiation beam 13 to deteriorate. Therefore, the scintillation detector 1 can only be used to detect low-energy X-rays, not suitable for high-energy treatments. Type of radiation beam is used.

Therefore, another scintillation detector has been developed that moves the receiver so that it does not lie in the path of the radiation beam. Please refer to Figure 2, which shows a schematic diagram of another scintillation detector 2 in the prior art. The scintillation detector 2 includes a darkroom cavity 21, an acrylic prosthesis (PMMA phantom) 22, a scintillator 23, a camera 24, and a mirror 25. The scintillation detector 2 uses the radiation beam 26 to pass through the acrylic prosthesis 22 and irradiate the scintillator 23, so that the radiation beam 26 interacts with the scintillator substance to generate light, and the generated light signal is captured by the camera 24 Get the radiation dose. However, in the existing structure of the scintillation detector 2, it is necessary to provide a larger space for setting up the camera 24, which makes the overall size of the scintillation detector 2 large and inconvenient to install. Furthermore, since the camera 24 must be accurately installed outside the traveling path of the radiation beam 26 to prevent the camera 24 from being damaged by the radiation of the radiation beam 26, it is difficult to correct the angle and position of the camera 24. Moreover, the position of the camera 24 must be recalibrated every time the flicker detector 2 is moved, which not only takes time but also causes a lot of inconvenience in use.

In view of this, it is necessary to provide a radiation beam detection device that can quickly measure the radiation beam and is small in size, easy to install, and will not be damaged by the radiation of the radiation beam, so as to solve the problems in the prior art. .

In order to solve the above-mentioned problems of the conventional technology, the purpose of the present disclosure is to provide a radiation beam detection device that uses an image sensor to replace the camera in the existing scintillation detector, which can effectively reduce the radiation beam detection device The overall volume and avoid the problem of difficult camera calibration. Furthermore, by setting the image sensor so as not to be located on the traveling path of the radiation beam, the image sensor can be prevented from being directly bombarded by the radiation beam and causing malfunction or damage.

To achieve the above object, the present disclosure provides a radiation beam detection device, including: a scintillator, including a front surface, a back surface opposite to the front surface, and a first surface adjacent to the front surface and the back surface A side surface, in which a radiation beam is incident on the front surface of the scintillator at an angle along a straight path; and a first light receiver disposed on the first side surface of the scintillator along a first direction, For obtaining a first optical signal in the first direction generated by the radiation beam entering the scintillator, and converting the first optical signal into a first electrical signal, wherein the first optical receiver is provided Positions that do not interfere with each other on the extension line of the linear path of the radiation beam.

In one of the preferred embodiments of the present disclosure, the first direction is perpendicular to the extension direction of the linear path of the radiation beam.

In one of the preferred embodiments of the present disclosure, the first direction is parallel to the extending direction of the linear path of the radiation beam.

In one of the preferred embodiments of the present disclosure, the radiation beam detection device further includes a processor communicatively connected with the first light receiver, wherein the processor obtains the direction in the first direction according to the first electrical signal The relationship between the position of the signal and the signal strength.

In one of the preferred embodiments of the present disclosure, the scintillator further includes a second side surface, which is adjacent to the front surface, the back surface, and the first side surface; wherein the radiation beam detection device further It includes a second light receiver, the second light receiver is arranged on the second side surface of the scintillator along a second direction, and is used to obtain the radiation beam entering the scintillator to generate the result in the second Direction of a second optical signal, and convert the second optical signal into a second electrical signal; and wherein the second optical receiver is arranged so as not to interfere with the extension line of the linear path of the radiation beam The location.

In one of the preferred embodiments of the present disclosure, the first direction and the second direction are both perpendicular to the extending direction of the linear path of the radiation beam.

In one of the preferred embodiments of the present disclosure, the first light receiver includes a contact image sensor, and the first light receiver is coupled to the scintillator.

In one of the preferred embodiments of the present disclosure, the radiation beam detection device further includes a light-shielding layer covering the exposed external surface of the scintillator.

The present disclosure also provides a radiation beam detection device, including: a scintillator for receiving a radiation beam; a light receiver group coupled to the scintillator for obtaining the radiation beam to pass along a straight path A group of optical signals in two directions generated by the scintillator, and the group of optical signals are converted into a group of electrical signals; and a processor, which is connected to the group of optical receivers in communication, wherein the processor is based on The group of electrical signals obtains an incident position where the radiation beam is incident on the scintillator, and the relationship between the position of the radiation beam in the two directions and the signal intensity; wherein the light receiver group is arranged in relation to the radiation beam The position where the extension lines of the straight path of the beam do not interfere with each other.

In one of the preferred embodiments of the present disclosure, the light receiver set includes: a first light receiver arranged on a side surface of the scintillator along a first direction for obtaining the beam to pass through The scintillator generates a first light signal in the first direction, and converts the first light signal into a first electrical signal; and a second light receiver is arranged along a second direction The other side surface of the scintillator is used to obtain a second optical signal in the second direction generated by the beam passing through the scintillator, and to convert the second optical signal into a second electrical signal , Wherein the first direction is perpendicular to the second direction.

Compared with the prior art, the present disclosure couples the light receiver group to the scintillator to capture the light generated by the interaction of the scintillator material when the beam passes through the scintillator. Moreover, by analyzing the measured optical signal, information such as the size, position, intensity distribution, and dose distribution of radioactive materials can be obtained. With this design, the light receiver group can not only accurately capture the visible light emitted by the scintillator, but also miniaturize the overall configuration of the radiation beam detection device. Furthermore, by setting the light receiver so as not to be located on the traveling path of the radiation beam, the light receiver can be effectively prevented from being directly bombarded by the radiation beam and causing malfunction or damage.

In order to make the above and other objectives, features, and advantages of the present disclosure more obvious and understandable, the following will describe the preferred embodiments of the present disclosure in conjunction with the accompanying drawings in detail.

Please refer to FIG. 3, which shows a schematic diagram of the radiation beam detection device 3 of the preferred embodiment of the present disclosure. The radiation beam detection device 3 includes a scintillator 31, a light receiver group 32, and a processor 33. The scintillator 31 is composed of a scintillation material, which emits visible light after absorbing energy. The light receiver group 32 is provided on the outer periphery of the scintillator 31. The processor 33 is in communication connection with the optical receiver group 32. The radiation beam detection device 3 of the present disclosure uses the radiation beam 91 to enter the scintillator 31, and uses ionizing radiation to excite electrons in the crystals or molecules in the scintillator 31 to an excited state, and when the electrons return to the self-excited state In the ground state, fluorescent light is emitted, and then the collected fluorescent light is converted into electrical signals by the light receiver group 32, and a series of corresponding processing is performed on the electrical signals by the processor 33 to complete radiation detection. The specific structures of the scintillator 31, the light receiver group 32, and the processor 33 will be detailed later.

As shown in FIG. 3, the scintillator 31 is a rectangular flat plate. However, in other embodiments, the scintillator 31 may adopt various suitable shapes, and is not limited to this. The scintillator 31 includes a front surface 311, a back surface (not labeled), a first side surface 312, and a second side surface 313. The front surface 311 is opposite to the back surface, and the first side surface 312 and the second side surface 313 are opposite to each other. Adjacent, and the first side surface 312 and the second side surface 313 are adjacent to the front surface 311 and the rear surface. The front surface 311 of the scintillator 31 is aligned with the radiation source 9 for receiving the radiation beam 91 emitted by the radiation source 9. The radiation beam 91 is incident on the front surface 311 of the scintillator 31 at an angle along a linear path 911. Preferably, the radiation beam 91 is perpendicularly incident on the front surface 311 of the scintillator 31. In this embodiment, the front surface 311 of the scintillator 31 is disposed on the X-Y plane, and the radiation beam 91 is incident along the Z direction. The radiation beam 91 passes through the scintillator 31 and exits from the rear surface of the scintillator 31.

As shown in FIG. 4, the optical receiver group 32 includes a first optical receiver 321 and a second optical receiver 322. The first light receiver 321 is arranged on the first side surface 312 of the scintillator 31 along the first direction (for example, the X direction), and is used to capture the radiation beam 91 entering the scintillator 31 and project it on the first side surface 312 and A first optical signal in a first direction, and the first optical signal is converted into a first electrical signal. The second light receiver 322 is arranged on the second side surface 313 of the scintillator 31 along the second direction (for example, the Y direction), and is used to capture the radiation beam 91 entering the scintillator 31 and project it on the second side surface 313 and A second optical signal in the second direction, and the second optical signal is converted into a second electrical signal. In this embodiment, the first direction and the second direction are perpendicular to the extension direction (for example, the Z direction) of the linear path 911 of the radiation beam 91. It should be noted that both the first light receiver 321 and the second light receiver 322 are arranged at positions that do not interfere with each other on the extension line 912 of the linear path 911 of the radiation beam 91. That is, the radiation beam 91 does not directly irradiate the first light receiver 321 and the second light receiver 322, and the beam emitted after the radiation beam 91 passes through the scintillator 31 does not directly irradiate the first light receiver. 321 and a second optical receiver 322. By setting the light receiver group 32 so as not to be located on the traveling path of the radiation beam 91, the light receiver group 32 can be effectively prevented from being directly bombarded by the radiation beam 91 and causing malfunction or damage. With this design, the radiation beam detection device 3 can be used to detect radiation beams with high energy and high penetration characteristics, such as photon radiation with an energy range of 1 million electron volts (MeV) to 30 MeV. Beam, electron beam with energy range between 1 MeV and 30 MeV, proton beam with energy range between 3 MeV and 300 MeV, or heavy beam with energy range between 30 MeV/u and 800 MeV/u Particle beam.

Preferably, the first light receiver 321 and the second light receiver 322 may be image sensors, such as contact image sensors (CIS). In addition, the first light receiver 321 and the second light receiver 322 are directly coupled to the scintillator 31, or indirectly coupled to the scintillator 31 through a substance such as glue. With this design, the light receiver group 32 can not only accurately capture the visible light emitted by the scintillator 31, but also make the overall configuration of the radiation beam detection device 3 compact, reduce production costs, and facilitate installation.

As shown in FIG. 3, the processor 33 is electrically connected to the first optical receiver 321 and the second optical receiver 322 through respective transmission lines 331. Optionally, the processor 33 can also communicate with the first optical receiver 321 and the second optical receiver 322 in a wireless manner, and it is not limited to this. The processor 33 may generate a diagram of the relationship between the position of the radiation beam in the first direction or in the second direction and the signal intensity according to the acquired first electrical signal or the second electrical signal. In addition, the processor 33 can also create a beam information map according to the acquired first electrical signal and the second electrical signal, which includes information such as the size, position, and intensity distribution of the radiation beam 91. Specifically, the processor 33 includes a data acquisition unit, a data processing unit, and an image processing unit. The processor 33 obtains the electrical signal from the optical receiver group 32 through the data acquisition unit, and stores the electrical signal in the data processing unit. The data processing unit can perform various functions, such as gain correction, edge detection, sharpening, contrast enhancement, etc., to make the data suitable for subsequent processing or image reconstruction. The image processing unit receives the signal obtained through processing by the data processing unit to generate an image of a region of interest (ROI) passed by the radiation beam 91. In this embodiment, the processor 33 may be controlled or implemented by a computer, and a plurality of control instructions are stored in the processor 33, and the processor 33 executes the above-mentioned corresponding processing programs according to the corresponding control instructions.

The light generated by the radiation beam 91 passing through the scintillator 31 can obtain information about the radiation beam 91 in different directions according to the different positions of the first light receiver 321 and the second light receiver 322. For example, please refer to FIG. 4, which shows the relationship between the position of the radiation beam 91 obtained by the radiation beam detection device 3 in FIG. 3 and the signal intensity in one direction. As shown in FIG. 3, the first light receiver 321 and the second light receiver 322 are arranged perpendicular to the extending direction of the linear path 911 of the radiation beam 91. When the radiation beam 91 is incident on the front surface 311 of the scintillator 31 in the Z direction, by the first light receiver 321 provided on the first side surface 312 of the scintillator 31 or the second side surface 313 of the scintillator 31 The second light receiver 322 can obtain the relationship between the position of the radiation beam 91 in one direction and the signal intensity, that is, the intensity distribution of the radiation beam 91 in the X direction or the Y direction.

Furthermore, please refer to FIG. 5, which shows a beam information diagram created by the processor 33 of the radiation beam detection device 3 in FIG. 3 based on the electrical signals of the radiation beam 91 in two directions. When the radiation beam 91 is incident on the front surface 311 of the scintillator 31 in the Z direction, the first light receiver 321 provided on the first side surface 312 of the scintillator 31 and the second side surface 313 provided on the scintillator 31 The second light receiver 322 can obtain the cross-sectional information of the radiation beam 91 on the XY plane. Specifically, the processor 33 obtains the intensity distribution of the radiation beam 91 in the X direction and the Y direction, and then the processor 33 performs real-time image reconstruction of the signals in each direction, and then combines the obtained results to obtain the radiation Data such as the beam shape of the beam 91 on the XY plane, such as the size, position, and intensity distribution of the radiation beam 91. As shown in FIG. 5, the processor 33 obtains the incident position of the radiation beam 91 on the scintillator 31 and the signal of the radiation beam 91 on the XY plane based on a set of electrical signals sensed by the light receiver group 32 Gaussian distribution of intensity. For example, the beam information graph in Figure 5 contains three concentric circles, the innermost circle represents the 1-sigma standard deviation of the signal intensity, and so on, the second circle represents the 2-sigma standard deviation of the signal intensity. sigma standard deviation, and the outermost circle represents the 3-sigma standard deviation of signal strength.

Please refer to FIG. 6, which shows a schematic diagram of the radiation beam detection device 4 of the second preferred embodiment of the present disclosure. The radiation beam detection device 4 includes a scintillator 41, a light receiver group 42, and a processor 43. The scintillator 41 includes a front surface 411, a back surface (not labeled), a first side surface 412, and a second side surface 413. The light receiver group 42 includes a first light receiver 421 provided on the first side surface 412 and a second light receiver 422 provided on the second side surface 413. The front surface 411 of the scintillator 41 is aligned with the radiation source 9 for receiving the radiation beam 91 emitted by the radiation source 9. The radiation beam 91 is incident on the front surface 411 of the scintillator 41 at an angle along a straight path. It should be noted that the radiation beam detection device 4 of the second preferred embodiment is substantially the same as the radiation beam detection device 3 of the first preferred embodiment, and the difference between the two lies in the radiation beam detection device of the second preferred embodiment. The device 4 also includes a light shielding layer 44.

As shown in FIG. 6, the light shielding layer 44 is provided on the outer surface of the scintillator 41 and covers the exposed outer surface of the scintillator 41. Specifically, the light shielding layer 44 covers all outer surfaces except the contact surface of the scintillator 41 and the light receiver group 42. With this design, under the premise of not affecting the measurement of the light receiver group 42, the light shielding layer 44 is set to completely cover the outer surface of the scintillator 41 exposed to the outside, so that the light receiver group 42 will not be interfered by external light. , The visible light emitted by the scintillator 41 can be accurately obtained. Optionally, the light shielding layer 44 may be formed by covering the scintillator 41 with a thin opaque material (for example, paper, aluminum foil, etc.), or may be formed by coating the scintillator 41 with an opaque paint. It should be understood that, in other embodiments, a light-shielding layer may also be provided, and it is not limited thereto.

Please refer to FIG. 7, which shows a schematic diagram of the radiation beam detection device 5 of the third preferred embodiment of the present disclosure. The radiation beam detection device 5 includes a scintillator 51, a first light receiver 52, and a processor 53. The scintillator 51 includes a front surface 511, a back surface (not labeled), and a first side surface 512. The front surface 511 is opposite to the back surface, and the front surface 511 and the back surface of the first side surface 512 are adjacent. The front surface 511 of the scintillator 51 is aligned with the radiation source 9 for receiving the radiation beam 91 emitted by the radiation source 9. The radiation beam 91 is incident on the front surface 511 of the scintillator 51 at an angle along a linear path 911. The first light receiver 52 is disposed on the first side surface 512 of the scintillator 51 along the first direction (for example, the Z direction). It is used to obtain the first optical signal generated by the radiation beam 91 entering the scintillator 51 and projected on the first side surface 512 and propagated along the first direction, and convert the first optical signal into a first electrical signal. The processor 33 is in communication connection with the first optical receiver 52, and is used to perform a series of processing on the received first electrical signal to complete radiation detection.

As shown in FIG. 7, in the third preferred embodiment, the front surface 511 of the scintillator 51 is arranged on the X-Y plane, and the radiation beam 91 is incident along the Z direction. It should be noted that the scintillator 51 is a rectangular parallelepiped with a certain thickness. After entering the scintillator 51, the radiation beam 91 proceeds along the extending direction of the linear path 911 and stops inside the scintillator 51, that is, the radiation beam 91 does not follow The extension line 912 of the straight path 911 is emitted from the rear surface of the scintillator 31. In the third preferred embodiment, the first direction is parallel to the extending direction (for example, the Z direction) of the linear path 911 of the radiation beam 91. In addition, the first light receiver 52 is disposed at a position that does not interfere with each other on the extension line 912 of the linear path 911 of the radiation beam 91. That is, the radiation beam 91 does not directly irradiate the first light receiver 52. By setting the first light receiver 52 not to be located on the traveling path of the radiation beam 91, the first light receiver 52 can be effectively prevented from being directly bombarded by the radiation beam 91 to cause malfunction or damage. With this design, the radiation beam detection device 5 can be used to detect radiation beams with high energy and high penetration characteristics, such as photon beams with an energy range of 1 MeV to 30 MeV, and an energy range of 1 MeV to 30 MeV. Between electron beams, proton beams with energy ranging from 3 MeV to 300 MeV, or heavy particle beams with energy ranging from 30 MeV/u to 800 MeV/u.

Preferably, the first light receiver 52 may be an image sensor, such as a contact image sensor (CIS). In addition, the first light receiver 52 is directly coupled to the scintillator 51, or indirectly coupled to the scintillator 51 through a substance such as glue. With this design, the first light receiver 52 can not only accurately capture the visible light emitted by the scintillator 51, but also miniaturize the overall configuration of the radiation beam detection device 5, reduce production costs, and facilitate installation.

As shown in FIG. 7, the processor 53 is electrically connected to the first optical receiver 52 through a transmission line 531. Optionally, the processor 53 can also communicate with the first optical receiver 52 in a wireless manner, and it is not limited thereto. The processor 53 may generate a relationship diagram between the position of the radiation beam 91 in the first direction and the signal intensity according to the acquired first electrical signal. It should be noted that the processor 53 of the third preferred embodiment is substantially the same as the processor 33 of the first preferred embodiment, and will not be repeated here.

The light generated by the radiation beam 91 passing through the scintillator 31 can obtain information about the direction of the radiation beam 91 according to the position of the first light receiver 52. For example, please refer to FIG. 8, which shows the relationship between the position of the radiation beam 91 obtained by the radiation beam detection device 5 in FIG. 7 and the signal intensity in one direction. As shown in FIG. 7, the first light receiver 52 is arranged in parallel to the extending direction of the linear path 911 of the radiation beam 91. When the radiation beam 91 enters the front surface 511 of the scintillator 51 in the Z direction, the first light receiver 52 provided on the first side surface 512 of the scintillator 51 can obtain the position of the radiation beam 91 in one direction and The signal intensity relationship graph is the intensity distribution of the radiation beam 91 in the Z direction. Furthermore, according to the relationship between the position in the Z direction and the signal intensity, the travel distance of the radiation beam 91 emitted under specific parameters (such as radiation dose, emission intensity) after entering the scintillator 51 can be obtained, and the radiation beam can be simulated The relationship between depth intensity and dose curve of 91 after entering the human body.

In summary, the present disclosure directly couples the light receiver to the scintillator to capture the light generated by the interaction of the scintillator material when the radiation beam passes through the scintillator. Moreover, by analyzing the measured optical signal, information such as the size, position, and intensity distribution of the radiation beam can be obtained to determine the dose and distribution of radioactive substances. With this design, the light receiver can not only accurately capture the visible light emitted by the scintillator, but also miniaturize the overall configuration of the radiation beam detection device. Furthermore, by setting the light receiver so as not to be located on the traveling path of the radiation beam, the light receiver can be effectively prevented from being directly bombarded by the radiation beam and causing malfunction or damage.

The above are only the preferred embodiments of the present disclosure. It should be pointed out that for those skilled in the art, without departing from the principles of the present disclosure, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the present disclosure. protected range.

1: Flicker detector

11: scintillator

12: receiver

13: Radiation beam

2: Flicker detector

21: Darkroom cavity

22: Acrylic prosthesis

23: scintillator

24: Camera

25: mirror

26: Radiation

3, 4, 5: radiation beam detection device

31, 41, 51: scintillator

311, 411, 511: front surface

312, 412, 512: first side surface

313, 413: second side surface

32, 42: Optical receiver group

321, 421, 52: the first optical receiver

322, 422: second optical receiver

33, 43, 53: processor

331, 531: transmission line

44: shading layer

9: Radioactive source

91: Radiation beam

911: straight path

912: Extension cord

X, Y, Z: direction

Figure 1 shows a schematic diagram of a scintillation detector in the prior art; Figure 2 shows a schematic diagram of another scintillation detector in the prior art; Figure 3 shows a schematic diagram of the radiation beam detection device of the first preferred embodiment of the present disclosure; Figure 4 shows the relationship between the position of the radiation beam in one direction and the signal intensity obtained by the radiation beam detection device in Figure 3; Figure 5 shows a beam information diagram created by the processor of the radiation beam detection device in Figure 3 based on the electrical signals of the radiation beam in two directions; Figure 6 shows a schematic diagram of the radiation beam detection device of the second preferred embodiment of the present disclosure; Figure 7 shows a schematic diagram of the radiation beam detection device of the third preferred embodiment of the present disclosure; and Figure 8 shows the relationship between the position of the radiation beam in one direction and the signal intensity obtained by the radiation beam detection device of Figure 7.

3: Radiation beam detection device

31: scintillator

311: front surface

312: First side surface

313: second side surface

32: Optical receiver group

321: The first optical receiver

322: second optical receiver

33: processor

331: Transmission Line

9: Radioactive source

91: Radiation beam

911: straight path

912: Extension cord

X, Y, Z: direction

Claims (9)

A radiation beam detection device includes: a scintillator including a front surface, a back surface opposite to the front surface, and a first side surface adjacent to the front surface and the back surface, wherein a radiation beam The front surface of the scintillator is incident at an angle along a straight path, and the radiation beam includes a photon beam with an energy range of 1 MeV to 30 MeV and electrons with an energy range of 1 MeV to 30 MeV Beam, a proton beam with an energy range of 3 MeV to 300 MeV, or a heavy particle beam with an energy range of 30 MeV/u to 800 MeV/u; and a first light receiver, along A first direction is arranged on the first side surface of the scintillator, and is used to obtain a first optical signal in the first direction generated by the radiation beam entering the scintillator, and the first optical signal Converted into a first electrical signal, wherein the first light receiver is arranged at a position that does not interfere with each other on the extension line of the linear path of the radiation beam, and wherein the first light receiver includes a contact image sensor And the first light receiver is coupled to the scintillator. The radiation beam detection device of claim 1, wherein the first direction is perpendicular to the extension direction of the linear path of the radiation beam. The radiation beam detection device of claim 1, wherein the first direction is parallel to the extension direction of the linear path of the radiation beam. For example, the radiation beam detection device of claim 1, wherein the radiation beam detection device further includes a processor communicatively connected with the first light receiver, wherein the processor obtains the direction in the first direction according to the first electrical signal The relationship between the position of the signal and the signal strength. The radiation beam detection device of claim 1, wherein the scintillator further includes a second side surface adjacent to the front surface, the rear surface, and the first side surface; The radiation beam detection device further includes a second light receiver, which is arranged on the second side surface of the scintillator along a second direction, and is used for acquiring the radiation beam to enter the scintillator Body and generate a second optical signal in the second direction, and convert the second optical signal into a second electrical signal; and wherein the second optical receiver is arranged in the straight line with the radiation beam The position where the extension line of the path does not interfere with each other. The radiation beam detection device of claim 5, wherein the first direction and the second direction are both perpendicular to the extension direction of the linear path of the radiation beam. The radiation beam detection device of claim 1, wherein the radiation beam detection device further includes a light-shielding layer covering the exposed external surface of the scintillator. A radiation beam detection device includes: a scintillator for receiving a radiation beam, wherein the radiation beam includes a photon beam with an energy range of 1 MeV to 30 MeV, and an energy range of 1 MeV to 30 MeV Between electron beams, proton beams with energy range from 3 MeV to 300 MeV, or heavy particle beams with energy range from 30 MeV/u to 800 MeV/u; a light receiver group, Coupled to the scintillator, used to obtain a set of optical signals in two directions generated by the radiation beam passing through the scintillator along a straight path, and convert the set of optical signals into a set of electrical signals; And a processor, which is in communication with the light receiver set, wherein the processor obtains an incident position of the radiation beam incident on the scintillator according to the set of electrical signals, and the radiation beam in the two directions The relationship between the position of the signal and the signal strength; The light receiver group is arranged at a position where it does not interfere with the extension line of the linear path of the radiation beam, and each light receiver of the light receiver group is a contact image sensor. Such as the radiation beam detection device of claim 8, wherein the light receiver group includes: a first light receiver arranged on a side surface of the scintillator along a first direction for obtaining the beam to pass through The scintillator generates a first light signal in the first direction, and converts the first light signal into a first electrical signal; and a second light receiver is arranged along a second direction The other side surface of the scintillator is used to obtain a second optical signal in the second direction generated by the beam passing through the scintillator, and to convert the second optical signal into a second electrical signal , Wherein the first direction is perpendicular to the second direction.

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