CN114949635A - Radiotherapy detection control device that makes a video recording - Google Patents
Radiotherapy detection control device that makes a video recording Download PDFInfo
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- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
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- A—HUMAN NECESSITIES
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- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring
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- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1059—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using cameras imaging the patient
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Abstract
The invention provides a radiotherapy shooting detection control device, which utilizes a ray radiation sensing array terminal to detect ray radiation intensity data of a peripheral area adjacent to a ray projection working area of radiotherapy equipment and utilizes a thermal infrared shooting terminal to shoot a thermal infrared image of a body part area of a target object subjected to radiotherapy treatment; analyzing the ray radiation intensity data through the control terminal, and generating a ray baffle adjusting instruction so as to change the posture of the ray baffle relative to a ray emission source of radiotherapy equipment and shield rays emitted by the ray emission source; and analyzing and processing the thermal infrared image of the body part region to control the radiation emission state of a radiation emission source of the radiotherapy equipment, indicating a radiation baffle to adjust the posture of the radiation baffle through monitoring the radiation intensity, effectively shielding overflowing rays, adjusting the radiation emission state under the condition of overhigh heating of the body part region, and improving the working safety and reliability of the radiotherapy equipment.
Description
Technical Field
The invention relates to the technical field of radiotherapy equipment, in particular to a radiotherapy shooting detection control device.
Background
Radiotherapy apparatus is used to deliver a dose of radiation to a patient's affected area, thereby delivering radiation therapy to the affected area. The existing radiotherapy equipment carries out radiotherapy on a diseased area in a relatively closed space, and in actual operation, rays emitted by the radiotherapy equipment cannot overflow outwards, radiation is generated on a non-diseased area, irreversible damage can be generated on the non-diseased area, and the working safety and reliability of the radiotherapy equipment are reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a radiotherapy shooting detection control device which utilizes a ray radiation sensing array terminal to detect ray radiation intensity data of a peripheral area adjacent to a ray projection working area of radiotherapy equipment and utilizes a thermal infrared shooting terminal to shoot a thermal infrared image of a body part area of a target object subjected to radiotherapy treatment; analyzing the ray radiation intensity data through the control terminal, and generating a ray baffle adjusting instruction so as to change the posture of the ray baffle relative to a ray emission source of radiotherapy equipment and shield rays emitted by the ray emission source; and analyzing and processing the thermal infrared image of the body part region to control the ray emission state of a ray emission source of the radiotherapy equipment, indicating a ray baffle to adjust the posture of the ray baffle through monitoring the radiation intensity of the ray, effectively shielding overflowing rays, and adjusting the ray emission state under the condition of overhigh heating of the body part region, thereby effectively improving the working safety and reliability of the radiotherapy equipment.
The invention provides a radiotherapy shooting detection control device, which comprises:
a radiation sensing array terminal, which is arranged in a peripheral region adjacent to a radiation projection working region of the radiotherapy equipment, for detecting radiation intensity data of the peripheral region;
the thermal infrared camera terminal is used for shooting a body part area of a target object subjected to radiotherapy treatment in the working process of radiotherapy equipment to obtain a thermal infrared image of the body part area;
the control terminal is connected with the ray radiation sensing array terminal and used for determining a radiation intensity abnormal sub-region existing in the surrounding region according to the ray radiation intensity data so as to generate a ray baffle adjusting instruction;
the ray baffle plate terminal is connected with the control terminal and is used for changing the posture of the ray baffle plate relative to a ray emission source of the radiotherapy equipment according to the ray baffle plate adjusting instruction so as to shield rays emitted by the ray emission source;
the control terminal is also connected with the thermal infrared camera terminal and is used for analyzing and processing the thermal infrared image of the body part area to obtain the real-time heating state of the body part area;
the control terminal also controls the real-time heating state to control the ray emission state of the ray emission source of the radiotherapy equipment.
Furthermore, the ray radiation sensing array terminal comprises a plurality of ray radiation sensors which are arranged in the surrounding area in an array form, and the included angle formed by the ray radiation receiving surface of each ray radiation sensor and the horizontal plane is the same; each radiation sensor is configured to detect radiation intensity data of a sub-area existing in the surrounding area.
Furthermore, the ray radiation sensing array terminal also comprises a data processor which is connected with all the ray radiation sensors; the data processor is used for adding the position information of the sub-area of each ray radiation sensor in the surrounding area to the ray radiation intensity data detected by the ray radiation sensor.
Further, the determining, by the control terminal according to the ray radiation intensity data, a radiation intensity abnormal sub-region existing inside the surrounding region specifically includes:
the control terminal extracts a corresponding ray radiation intensity value from the ray radiation intensity data, compares the ray radiation intensity value with a preset intensity threshold, and determines a sub-region existing in the surrounding region corresponding to the ray radiation sensor as a radiation intensity abnormal sub-region if the ray radiation intensity value is greater than or equal to the preset intensity threshold; otherwise, determining the sub-region of the corresponding ray radiation sensor in the surrounding region as the sub-region with normal radiation intensity.
Further, the generating of the ray baffle adjusting instruction by the control terminal specifically includes:
and the control terminal extracts the azimuth information of the sub-region from the ray radiation intensity data corresponding to the sub-region determined to belong to the abnormal radiation intensity, and generates a ray baffle adjusting instruction according to the position and posture difference between the azimuth information and the current orientation of the ray baffle.
Further, the ray baffle terminal comprises a ray baffle and a baffle driving motor, and the baffle driving motor is in driving connection with the ray baffle;
the baffle driving motor is connected with the control terminal and used for changing the posture of the ray baffle relative to a ray emission source of the radiotherapy equipment according to the ray baffle adjusting instruction, so that rays emitted by the ray emission source are shielded on the corresponding radiation intensity abnormal sub-region.
Furthermore, the infrared camera terminal is also used for scanning and shooting the body part area of the target object subjected to radiotherapy treatment to obtain a thermal infrared image of the body part area of the panoramic person.
Further, the control terminal analyzes and processes the thermal infrared image of the body part area of the panoramic avatar, and identifies and obtains the number of sub-areas of the body part area, of which the actual heating temperature currently existing in the body part area exceeds a threshold temperature threshold, from the thermal infrared image of the body part area of the panoramic avatar;
when the number of the part sub-regions is larger than or equal to a preset number threshold, the control terminal instructs a ray emission source of the radiotherapy equipment to reduce the emitted ray dose or reduce the duration length of the emitted rays.
Further, the thermal infrared camera terminal shoots the body part area of the target object subjected to radiotherapy treatment in the working process of the radiotherapy equipment, and the obtaining of the thermal infrared image of the body part area specifically comprises:
the thermal infrared camera terminal is used for shooting a rectangular radiotherapy treatment area formed by four preset mark points on a body part area of a target object subjected to radiotherapy treatment to obtain a corresponding body part area thermal infrared image;
the control terminal also controls the ray emission state of a ray emission source of the radiotherapy equipment according to the analysis result of the thermal infrared image of the body part region, and the specific process is as follows:
step S1, a plane rectangular coordinate system is constructed by taking the left lower vertex of the thermal infrared image of the body part region as an origin, the left side is upward Y-axis, the lower side is rightward X-axis, the following formula (1) is utilized, the moving direction and the moving speed of the radiotherapy equipment are controlled according to the coordinate positions of the four mark points on the thermal infrared image of the body part region,
in the above formula (1), v (t) represents the moving speed of the radiotherapy apparatus at the present moment; t represents the current time; [ X ] 1 (t),Y 1 (t)]The coordinate of a mark point positioned at the upper left position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment is represented; [ X ] 3 (t),Y 3 (t)]The coordinates of the mark points positioned at the lower right position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment are represented; f represents the image shooting frequency of the thermal infrared camera terminal;
to represent
Time of day;
controlling the radiotherapy equipment to move from the current position to the coordinate point according to the formula (1)
The linear direction of the corresponding position moves at the moving speed v (t);
step S2, using the following formula (2), according to the coordinate positions of the four mark points on the thermal infrared image of the body part region, judging whether the shape distortion of the radiotherapy treatment region occurs,
in the above formula (2), r (t) is a determination value indicating whether or not the shape distortion of the radiotherapy treatment region occurs at the current time; [ X ] 2 (t),Y 2 (t)]Indicating the current time of dayCoordinates of the mark points positioned at the upper right position in the coordinate positions of the four mark points on the body part area thermal infrared image; [ X ] 4 (t),Y 4 (t)]The coordinates of the mark points positioned at the lower left position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment are represented; i is 1 (t) vector coordinates of the left boundary of a rectangular area formed by the four marking points on the thermal infrared image of the body part area at the current moment; i is 2 (t) vector coordinates of an upper boundary of a rectangular region formed by four mark points on the thermal infrared image of the body part region at the current moment are represented; i is 3 (t) vector coordinates of the right boundary of a rectangular area formed by the four mark points on the thermal infrared image of the body part area at the current moment are represented; i is 4 (t) vector coordinates of a lower boundary of a rectangular area formed by four marking points on the thermal infrared image of the body part area at the current moment; the quantity product of two vectors on the left side and the right side of the symbol is obtained; | | represents the absolute value;
if R (t) is 0, the shape distortion of the radiotherapy treatment region does not appear at the current moment;
if R (t) is 1, the shape of the radiotherapy treatment region at the current moment is distorted;
step S3, using the following formula (3), according to the judgment value whether the shape distortion appears in the radiotherapy treatment area at the current time and the coordinate positions of the four mark points on the thermal infrared image of the body part area, controlling whether the ray emission source of the radiotherapy equipment emits the ray,
in the above formula (3), e (t) represents a control value indicating whether a radiation emission source of the radiotherapy apparatus emits radiation at the present time; v M Representing a maximum moving velocity value of the radiotherapy apparatus;
if E (t) >0, the ray emission source of the radiotherapy equipment continuously emits rays at the current moment;
and if E (t) is less than or equal to 0, the ray emission source of the radiotherapy equipment stops emitting rays at the current moment.
Compared with the prior art, the radiotherapy shooting detection control device detects the ray radiation intensity data of the peripheral area adjacent to the ray projection working area of the radiotherapy equipment by using the ray radiation sensing array terminal, and shoots the thermal infrared image of the body part area of the target object subjected to radiotherapy treatment by using the thermal infrared shooting terminal; analyzing the ray radiation intensity data through the control terminal, and generating a ray baffle adjusting instruction so as to change the posture of the ray baffle relative to a ray emission source of radiotherapy equipment and shield rays emitted by the ray emission source; and analyzing and processing the thermal infrared image of the body part region to control the ray emission state of a ray emission source of the radiotherapy equipment, indicating a ray baffle to adjust the posture of the ray baffle through monitoring the radiation intensity of the ray, effectively shielding overflowing rays, and adjusting the ray emission state under the condition of overhigh heating of the body part region, thereby effectively improving the working safety and reliability of the radiotherapy equipment.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a radiotherapy photography detection control device provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Fig. 1 is a schematic structural diagram of a radiotherapy photography detection control apparatus according to an embodiment of the present invention. This radiotherapy detection control device that makes a video recording includes:
a radiation sensing array terminal, which is arranged in a peripheral region adjacent to a radiation projection working region of the radiotherapy equipment, for detecting radiation intensity data of the peripheral region;
the thermal infrared camera terminal is used for shooting a body part area of a target object subjected to radiotherapy treatment in the working process of radiotherapy equipment to obtain a thermal infrared image of the body part area;
the control terminal is connected with the ray radiation sensing array terminal and used for determining a radiation intensity abnormal sub-region existing in the surrounding region according to ray radiation intensity data so as to generate a ray baffle adjusting instruction;
the ray baffle terminal is connected with the control terminal and used for changing the posture of the ray baffle relative to a ray emission source of the radiotherapy equipment according to the ray baffle adjusting instruction so as to shield rays emitted by the ray emission source;
the control terminal is also connected with the thermal infrared camera terminal and is used for analyzing and processing the thermal infrared image of the body part area to obtain the real-time heating state of the body part area;
the control terminal also controls the radiation emitting state of the radiation emitting source of the radiotherapy equipment in real time.
The beneficial effects of the above technical scheme are: the radiotherapy shooting detection control device detects the ray radiation intensity data of the peripheral area adjacent to the ray projection working area of the radiotherapy equipment by using a ray radiation sensing array terminal, and shoots the thermal infrared image of the body part area of a target object subjected to radiotherapy treatment by using a thermal infrared shooting terminal; analyzing the ray radiation intensity data through the control terminal, and generating a ray baffle adjusting instruction so as to change the posture of the ray baffle relative to a ray emission source of radiotherapy equipment and shield rays emitted by the ray emission source; and analyzing and processing the thermal infrared image of the body part region to control the ray emission state of a ray emission source of the radiotherapy equipment, indicating a ray baffle to adjust the posture of the ray baffle through monitoring the radiation intensity of the ray, effectively shielding overflowing rays, and adjusting the ray emission state under the condition of overhigh heating of the body part region, thereby effectively improving the working safety and reliability of the radiotherapy equipment.
Preferably, the terminal of the ray radiation sensing array comprises a plurality of ray radiation sensors arranged in an array form in the surrounding area, and the ray radiation receiving surface of each ray radiation sensor forms the same included angle with the horizontal plane; each radiation sensor is used for detecting radiation intensity data of a sub-area existing in the surrounding area.
The beneficial effects of the above technical scheme are: the ray radiation sensing array terminal is set to comprise a plurality of ray radiation sensors which are arranged in the surrounding area in an array mode, so that the distribution condition of ray radiation intensity can be carried out in the whole range of the surrounding area, and the included angle formed by the ray radiation receiving surface of each ray radiation sensor and the horizontal plane is set to be the same, so that each ray radiation sensor can be guaranteed to have the same detection sensitivity.
Preferably, the ray radiation sensing array terminal further comprises a data processor connected with all ray radiation sensors; the data processor is used for adding the position information of the sub-area of each ray radiation sensor in the surrounding area to the ray radiation intensity data obtained by the detection of the sub-area.
The beneficial effects of the above technical scheme are: each camera shooting radiation sensor has unique distribution set azimuth information in the surrounding area, the distribution set azimuth information is added into the ray radiation intensity data obtained by detection, unique identification can be carried out on each group of ray radiation intensity data, and regional differentiation processing can be conveniently carried out on each group of ray radiation intensity data.
Preferably, the step of determining, by the control terminal, a radiation intensity abnormal sub-region existing inside the surrounding region according to the radiation intensity data specifically includes:
the control terminal extracts a corresponding ray radiation intensity value from the ray radiation intensity data, compares the ray radiation intensity value with a preset intensity threshold, and determines a sub-region of the corresponding ray radiation sensor in the surrounding region as a radiation intensity abnormal sub-region if the ray radiation intensity value is greater than or equal to the preset intensity threshold; otherwise, determining the sub-region of the corresponding ray radiation sensor in the surrounding region as the sub-region with normal radiation intensity.
The beneficial effects of the above technical scheme are: by the method, whether the sub-area of each ray radiation sensor in the surrounding area belongs to the sub-area with abnormal radiation intensity can be accurately and quantitatively judged.
Preferably, the step of generating the ray baffle adjustment instruction by the control terminal specifically includes:
and the control terminal extracts the azimuth information of the sub-region from the ray radiation intensity data which is determined to belong to the sub-region with abnormal radiation intensity, and generates a ray baffle adjusting instruction according to the pose difference between the azimuth information and the current orientation of the ray baffle.
The beneficial effects of the above technical scheme are: the control terminal extracts the position and posture difference between the orientation information of the sub-region and the current orientation of the ray baffle according to the ray radiation intensity data corresponding to the sub-region with abnormal radiation intensity, and generates a ray baffle adjusting instruction for adjusting the posture of the ray baffle so as to comprehensively and accurately shield rays.
Preferably, the ray baffle terminal comprises a ray baffle and a baffle driving motor, and the baffle driving motor is in driving connection with the ray baffle;
the baffle driving motor is connected with the control terminal and used for changing the posture of the ray baffle relative to a ray emission source of the radiotherapy equipment according to the ray baffle adjusting instruction, so that rays emitted by the ray emission source are shielded on the corresponding radiation intensity abnormal sub-region.
The beneficial effects of the above technical scheme are: according to the ray baffle adjusting instruction, the posture of the ray baffle relative to a ray emission source of the radiotherapy equipment is changed, and rays emitted by the ray emission source on the sub-region with abnormal radiation intensity can be shielded, so that the continuous increase of the radiation intensity of the sub-region with abnormal radiation intensity is avoided.
Preferably, the infrared camera terminal is further configured to scan and shoot a body part region of the target object subjected to radiotherapy treatment, so as to obtain a thermal infrared image of the body part region in the panoramic view.
The beneficial effects of the above technical scheme are: the body part area of the target object subjected to radiotherapy treatment is scanned and shot to obtain a thermal infrared image of the body part area of the panoramic person, so that the body part area can be comprehensively monitored for heating temperature.
Preferably, the control terminal analyzes the thermal infrared image of the body part area of the panoramic avatar, and identifies the number of the part sub-areas of which the actual heating temperature currently existing in the body part area exceeds the threshold temperature threshold from the thermal infrared image of the body part area of the panoramic avatar;
when the number of the part sub-regions is larger than or equal to the preset number threshold, the control terminal instructs the ray emission source of the radiotherapy equipment to reduce the emitted ray dose or reduce the duration length of the emitted rays.
The beneficial effects of the above technical scheme are: when the number of the part sub-regions of the body part region, the actual heating temperature of which exceeds the threshold temperature threshold value, is greater than or equal to the preset number threshold value, indicates that the body part region is in an over-radiation state under the current radiation condition, and at the moment, the radiation emission source of the radiotherapy equipment is instructed to reduce the emitted radiation dose or the duration length of the emitted radiation, so that the body part region can be prevented from being irreversibly damaged.
Preferably, the thermal infrared camera terminal shoots a body part region of a target object subjected to radiotherapy treatment in the working process of radiotherapy equipment, and obtaining a thermal infrared image of the body part region specifically includes:
the thermal infrared camera terminal is used for shooting a rectangular radiotherapy treatment area formed by four preset mark points on a body part area of a target object subjected to radiotherapy treatment to obtain a corresponding thermal infrared image of the body part area;
the control terminal also controls the ray emission state of the ray emission source of the radiotherapy equipment according to the analysis result of the thermal infrared image of the body part region, and the specific process is as follows:
step S1, using the left lower vertex of the thermal infrared image of the body part region as the origin, the left side upward as the Y axis, the lower side rightward as the X axis to construct a plane rectangular coordinate system, using the following formula (1) to control the moving direction and moving speed of the radiotherapy device according to the coordinate positions of the four marked points on the thermal infrared image of the body part region,
in the above formula (1), v (t) represents the moving speed of the radiotherapy apparatus at the present moment; t represents the current time; [ X ] 1 (t),Y 1 (t)]The coordinates of the mark points positioned at the upper left position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment are represented; [ X ] 3 (t),Y 3 (t)]The coordinates of the mark points positioned at the lower right position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment are represented; f represents the image shooting frequency of the thermal infrared camera terminal;
to represent
Time of day;
controlling the radiotherapy equipment to move from the current position to the target position according to the formula (1)Coordinate point
The linear direction of the corresponding position moves at the moving speed v (t);
step S2, using the following formula (2), according to the coordinate positions of the four mark points on the thermal infrared image of the body part region, judging whether the shape distortion of the radiotherapy treatment region occurs,
in the above formula (2), r (t) is a determination value indicating whether or not the shape distortion of the radiotherapy treatment region occurs at the current time; [ X ] 2 (t),Y 2 (t)]The coordinate of a mark point positioned at the upper right position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment is represented; [ X ] 4 (t),Y 4 (t)]The coordinates of the mark points positioned at the lower left position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment are represented; i is 1 (t) vector coordinates of the left boundary of a rectangular area formed by the four marking points on the thermal infrared image of the body part area at the current moment; i is 2 (t) vector coordinates of an upper boundary of a rectangular region formed by four mark points on the thermal infrared image of the body part region at the current moment are represented; i is 3 (t) vector coordinates of the right boundary of a rectangular area formed by the four mark points on the thermal infrared image of the body part area at the current moment are represented; I.C. A 4 (t) vector coordinates of a lower boundary of a rectangular area formed by four marking points on the thermal infrared image of the body part area at the current moment; the quantity product of two vectors on the left side and the right side of the symbol is obtained; | | represents the absolute value;
if R (t) is 0, the shape distortion of the radiotherapy treatment region does not appear at the current moment;
if R (t) is 1, the shape of the radiotherapy treatment region at the current moment is distorted;
step S3, using the following formula (3), according to the decision value of whether the shape distortion appears in the radiotherapy treatment region at the current time and the coordinate positions of the four marking points on the thermal infrared image of the body part region, controlling whether the ray emission source of the radiotherapy equipment emits rays,
in the above formula (3), e (t) represents a control value indicating whether a radiation emitting source of the radiotherapy apparatus emits radiation at the present time; v M Representing a maximum moving speed value of the radiotherapy device;
if E (t) >0, the ray emission source of the radiotherapy equipment continuously emits rays at the current moment;
if E (t) is less than or equal to 0, the ray emission source of the radiotherapy equipment stops emitting rays at the current moment.
The beneficial effects of the above technical scheme are: controlling the movement direction and the movement speed of the radiotherapy equipment according to the coordinate positions of the four mark points on the target object by using the formula (1), so as to eliminate the influence of shaking of the target object to the maximum extent under the condition that no major movement error occurs; and then, judging whether the shape distortion occurs in the radiotherapy treatment area or not according to the coordinate positions of the four mark points on the target object by using the formula (2), thereby timely judging the body twisting condition of the target object and laying a foundation for stopping transmitting rays in subsequent control. And finally, controlling the emission and the stop of the rays of the radiotherapy equipment according to the judgment value of the shape distortion of the radiotherapy treatment area and the real-time coordinate positions of the four mark points on the body of the target object by using the formula (3) so as to ensure that the target object can stop emitting the rays in time when the body of the target object is twisted greatly and ensure the safety of the target object.
As can be seen from the above description of the embodiments, the radiotherapy photography detection control device detects radiation intensity data of a peripheral region adjacent to a radiation projection work region of the radiotherapy apparatus by using the radiation sensing array terminal, and photographs a thermal infrared image of a region of a body part of a target object subjected to radiotherapy treatment by using the thermal infrared photography terminal; analyzing the ray radiation intensity data through the control terminal, and generating a ray baffle adjusting instruction so as to change the posture of the ray baffle relative to a ray emission source of radiotherapy equipment and shield rays emitted by the ray emission source; and analyzing and processing the thermal infrared image of the body part region to control the ray emission state of a ray emission source of the radiotherapy equipment, indicating a ray baffle to adjust the posture of the ray baffle through monitoring the radiation intensity of the ray, effectively shielding overflowing rays, and adjusting the ray emission state under the condition of overhigh heating of the body part region, thereby effectively improving the working safety and reliability of the radiotherapy equipment.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A radiotherapy camera shooting detection control device is characterized by comprising:
a radiation sensing array terminal, which is arranged in a peripheral region adjacent to a radiation projection working region of the radiotherapy equipment, for detecting radiation intensity data of the peripheral region;
the thermal infrared camera terminal is used for shooting a body part area of a target object subjected to radiotherapy treatment in the working process of radiotherapy equipment to obtain a thermal infrared image of the body part area;
the control terminal is connected with the ray radiation sensing array terminal and used for determining a radiation intensity abnormal sub-region existing in the surrounding region according to the ray radiation intensity data so as to generate a ray baffle adjusting instruction;
the ray baffle plate terminal is connected with the control terminal and is used for changing the posture of the ray baffle plate relative to a ray emission source of the radiotherapy equipment according to the ray baffle plate adjusting instruction so as to shield rays emitted by the ray emission source;
the control terminal is also connected with the thermal infrared camera terminal and is used for analyzing and processing the thermal infrared image of the body part area to obtain the real-time heating state of the body part area;
the control terminal also controls the real-time heating state to control the ray emission state of the ray emission source of the radiotherapy equipment.
2. The radiographic image detection control device according to claim 1, wherein:
the ray radiation sensing array terminal comprises a plurality of ray radiation sensors which are arranged in the surrounding area in an array form, and the included angle formed by the ray radiation receiving surface of each ray radiation sensor and the horizontal plane is the same; each radiation sensor is configured to detect radiation intensity data of a sub-area existing in the surrounding area.
3. The radiographic inspection control apparatus of claim 2, wherein:
the ray radiation sensing array terminal also comprises a data processor which is connected with all the ray radiation sensors; the data processor is used for adding the position information of the sub-area of each ray radiation sensor in the surrounding area to the ray radiation intensity data detected by the ray radiation sensor.
4. The radiographic image detection control apparatus according to claim 3, wherein:
the step of determining, by the control terminal, a radiation intensity abnormal sub-region existing inside the surrounding region according to the ray radiation intensity data specifically includes:
the control terminal extracts a corresponding ray radiation intensity value from the ray radiation intensity data, compares the ray radiation intensity value with a preset intensity threshold, and determines a sub-region existing in the surrounding region corresponding to the ray radiation sensor as a radiation intensity abnormal sub-region if the ray radiation intensity value is greater than or equal to the preset intensity threshold; otherwise, determining the sub-region of the corresponding ray radiation sensor in the surrounding region as the sub-region with normal radiation intensity.
5. The radiographic inspection control apparatus of claim 4, wherein:
the step of generating the ray baffle adjusting instruction by the control terminal specifically comprises the following steps:
and the control terminal extracts the azimuth information of the sub-region from the ray radiation intensity data which is determined to belong to the sub-region with abnormal radiation intensity, and generates a ray baffle adjusting instruction according to the position and attitude difference between the azimuth information and the current orientation of the ray baffle.
6. The radiographic image detection control apparatus of claim 5, wherein:
the ray baffle terminal comprises a ray baffle and a baffle driving motor, and the baffle driving motor is in driving connection with the ray baffle;
the baffle driving motor is connected with the control terminal and used for changing the posture of the ray baffle relative to a ray emission source of the radiotherapy equipment according to the ray baffle adjusting instruction, so that rays emitted by the ray emission source are shielded on the corresponding radiation intensity abnormal sub-region.
7. The radiographic image detection control device according to claim 1, wherein:
the infrared camera terminal is also used for scanning and shooting the body part area of the target object subjected to radiotherapy treatment to obtain the thermal infrared image of the body part area of the panoramic person.
8. The radiographic image detection control apparatus according to claim 7, wherein:
the control terminal analyzes and processes the thermal infrared image of the body part area of the panoramic avatar, and identifies and obtains the number of part sub-areas of which the actual heating temperature currently existing in the body part area exceeds a threshold temperature threshold from the thermal infrared image of the body part area of the panoramic avatar;
when the number of the part subregions is larger than or equal to a preset number threshold, the control terminal instructs a ray emission source of the radiotherapy equipment to reduce the emitted ray dose or reduce the duration length of the emitted ray.
9. The radiographic image detection control device according to claim 1, wherein:
the thermal infrared camera terminal shoots a body part region of a target object subjected to radiotherapy treatment in the working process of radiotherapy equipment, and the obtaining of the thermal infrared image of the body part region specifically comprises: the thermal infrared camera terminal is used for shooting a rectangular radiotherapy treatment area formed by four preset mark points on a body part area of a target object subjected to radiotherapy treatment to obtain a corresponding body part area thermal infrared image;
the control terminal also controls the ray emission state of a ray emission source of the radiotherapy equipment according to the analysis result of the thermal infrared image of the body part region, and the specific process is as follows:
step S1, a plane rectangular coordinate system is constructed by taking the left lower vertex of the thermal infrared image of the body part region as an origin, the left side is upward Y-axis, the lower side is rightward X-axis, the following formula (1) is utilized, the moving direction and the moving speed of the radiotherapy equipment are controlled according to the coordinate positions of the four mark points on the thermal infrared image of the body part region,
in the above formula (1), v (t) represents the moving speed of the radiotherapy apparatus at the present moment; t represents the current time; [ X ] 1 (t),Y 1 (t)]The coordinate of a mark point positioned at the upper left position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment is represented; [ X ] 3 (t),Y 3 (t)]The coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment are positionedCoordinates of the marking point at the lower right position; f represents the image shooting frequency of the thermal infrared camera terminal;
to represent
Time of day;
controlling the radiotherapy equipment to move from the current position to the coordinate point according to the formula (1)
The linear direction of the corresponding position moves at the moving speed v (t);
step S2, using the following formula (2), according to the coordinate positions of the four mark points on the thermal infrared image of the body part region, judging whether the shape distortion of the radiotherapy treatment region occurs,
in the above formula (2), r (t) is a determination value indicating whether or not the shape distortion of the radiotherapy treatment region occurs at the current time; [ X ] 2 (t),Y 2 (t)]The coordinate of a mark point positioned at the upper right position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment is represented; [ X ] 4 (t),Y 4 (t)]The coordinates of the mark points positioned at the lower left position in the coordinate positions of the four mark points on the thermal infrared image of the body part area at the current moment are represented; i is 1 (t) vector coordinates of the left boundary of a rectangular area formed by the four marking points on the thermal infrared image of the body part area at the current moment; i is 2 (t) vector coordinates of an upper boundary of a rectangular region formed by four mark points on the thermal infrared image of the body part region at the current moment are represented; i is 3 (t) vector coordinates of the right boundary of a rectangular area formed by the four mark points on the thermal infrared image of the body part area at the current moment are represented; i is 4 (t) representsVector coordinates of a lower boundary of a rectangular area formed by the four mark points on the thermal infrared image of the body part area at the current moment; the quantity product of two vectors on the left side and the right side of the symbol is obtained; | | represents the absolute value;
if R (t) is 0, the shape of the radiotherapy treatment region is not distorted at the current moment;
if R (t) is 1, the shape of the radiotherapy treatment region at the current moment is distorted;
step S3, using the following formula (3), according to the judgment value whether the shape distortion appears in the radiotherapy treatment area at the current time and the coordinate positions of the four mark points on the thermal infrared image of the body part area, controlling whether the ray emission source of the radiotherapy equipment emits the ray,
in the above formula (3), e (t) represents a control value indicating whether a radiation emission source of the radiotherapy apparatus emits radiation at the present time; v M Representing a maximum moving velocity value of the radiotherapy apparatus;
if E (t) is greater than 0, the ray emission source of the radiotherapy equipment continuously emits rays at the current moment;
and if E (t) is less than or equal to 0, the ray emission source of the radiotherapy equipment stops emitting rays at the current moment.
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