CN220459363U - Linear array gamma ray detector for detecting tumor in operation - Google Patents
Linear array gamma ray detector for detecting tumor in operation Download PDFInfo
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- CN220459363U CN220459363U CN202321391737.1U CN202321391737U CN220459363U CN 220459363 U CN220459363 U CN 220459363U CN 202321391737 U CN202321391737 U CN 202321391737U CN 220459363 U CN220459363 U CN 220459363U
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- 230000005251 gamma ray Effects 0.000 title claims abstract description 59
- 206010028980 Neoplasm Diseases 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 77
- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 210000002615 epidermis Anatomy 0.000 claims description 10
- 238000002600 positron emission tomography Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 210000003491 skin Anatomy 0.000 description 2
- GKLVYJBZJHMRIY-OUBTZVSYSA-N Technetium-99 Chemical compound [99Tc] GKLVYJBZJHMRIY-OUBTZVSYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 229940056501 technetium 99m Drugs 0.000 description 1
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Abstract
The utility model relates to a linear array gamma-ray detector for detecting tumors in operation, which comprises a detection shell and a handle shell, wherein N gamma-ray detection units are arranged in the detection shell at equal intervals along the length direction, and the gamma-ray detection units positioned at the middle position are position detection units W; each gamma ray detection unit is provided with a collimator in a matching way, the collimation direction is parallel to the axis direction of the handle shell, and the collimation direction of the collimator corresponding to the position detection unit W coincides with the axis of the handle shell; the handle shell is internally provided with a displacement sensor and an angle sensor, the exploration shell is provided with a plurality of indicator lamps which respectively correspond to the N gamma ray detection units and are used for indicating whether the corresponding gamma ray detection units have signal response or not; the gamma ray detection unit, the displacement sensor, the angle sensor and the indicator lamp are all connected with the controller. The technical scheme has the advantages of simple structure, portability, low cost and convenient use.
Description
Technical Field
The utility model belongs to the technical field of gamma-ray detection instruments, and particularly relates to a linear array gamma-ray detector for detecting tumors in operation.
Background
Malignant tumor is one of important diseases threatening human health, and has high mortality rate, and surgical treatment is still the main treatment means for most tumors at present.
Positron Emission Tomography (PET) Positron Emission Tomography, PET) is a non-invasive medical imaging technology, is a relatively advanced clinical examination imaging technology in the field of nuclear medicine, and adopts positron nuclides as tracers, and tumor information is known through the uptake of the tracers by a disease part.
The prior art PET devices are generally in two forms: annular PET detector and planar PET detector. The annular PET detector is a closed imaging system constructed with a plurality of detector elements to approximate an annular structure, as shown in fig. 1. The flat panel PET detector is comprised of a pair of stacked flat panel detectors each having a plurality of detector heads arrayed thereon, as shown in fig. 2.
The two PET devices are large in size, so that the application difficulty of the PET devices to the tumor tracking in the operation is high, and no tumor positioning device suitable for the operation is available at present.
Disclosure of Invention
The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a linear array gamma-ray detector for detecting tumors in operation.
The technical scheme of the utility model is as follows:
a linear array gamma ray detector for detecting tumor in operation comprises a detection shell, wherein the center of the top of the detection shell is fixedly connected with a handle shell, and the bottom of the detection shell is used for contacting with human epidermis;
n gamma ray detection units are arranged in the detection shell, wherein N=2n+1, and N is more than or equal to 1; the N gamma-ray detection units are arranged at equal intervals in a row along the length direction of the detection shell, and the gamma-ray detection unit positioned in the middle position is a position detection unit W;
each gamma ray detection unit is provided with a collimator in a matching way, the collimator is used for transmitting gamma rays meeting the collimation direction to the corresponding gamma ray detection unit, the collimation direction of the collimator is parallel to the axis direction of the handle shell, and the collimation direction of the collimator corresponding to the position detection unit W coincides with the axis of the handle shell;
a displacement sensor and an angle sensor are arranged in the handle shell, and the displacement sensor and the angle sensor are respectively used for sensing the displacement and the angle of the position detection unit W;
the detection shell is provided with a plurality of indicator lamps which respectively correspond to the N gamma ray detection units and are used for indicating whether the corresponding gamma ray detection units respond to signals or not;
the gamma ray detection unit, the displacement sensor, the angle sensor and the indicator lamp are all connected with the controller.
Further, an indication mark is arranged on the exploration shell and used for guiding an indication lamp corresponding to the position detection unit W.
Further, the distance between adjacent collimators is 3 mm-5 mm.
Further, n is more than or equal to 10 and less than or equal to 15.
Further, the surface of the exploration shell, which is contacted with the epidermis of the human body, is an arc surface.
Further, a zeroing key is arranged on the exploration shell and connected with the controller and used for sending signals to the controller so as to enable the displacement sensor and the angle sensor to count and zero.
The utility model has the following beneficial effects: compared with the annular PET detector and the flat PET detector in the prior art, the technical scheme has the advantages of simple structure, portability, low cost and convenient use.
Drawings
Fig. 1 is a schematic diagram of a prior art annular PET detector.
Fig. 2 is a schematic diagram of a prior art flat panel PET detector.
Fig. 3 is a perspective view (one) of an embodiment of the present utility model.
Fig. 4 is a perspective view (two) of an embodiment of the present utility model.
Fig. 5 is a front view of an embodiment of the present utility model.
Fig. 6 is a rear view of an embodiment of the present utility model.
Fig. 7 is a schematic diagram of the internal structure of an embodiment of the present utility model.
Fig. 8 is a schematic diagram of an application of an embodiment of the present utility model.
In the figure: 100-gamma ray detector, 200-tumor, 300-human epidermis;
1-exploration shell, 2-handle shell, 3-merging line, 4-pilot lamp, 5-collimator, 6-gamma ray detection unit, 7-displacement sensor, 8-angle sensor, 9-indication mark, 10-return to zero key.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 3-7, a linear gamma-ray detector 100 for detecting tumor during operation includes a detecting housing 1, wherein a top center position of the detecting housing 1 is fixedly connected with a handle housing 2, a bottom of the detecting housing 1 is used for contacting with a human epidermis 300, and a surface of the detecting housing 1 contacting with the human epidermis 300 is an arc surface.
The probe shell 1 is provided with N gamma ray detection units 6, N=2n+1, N is larger than or equal to 1, n=14 in the embodiment, and then n=29; the 29 gamma ray detection units 6 are arranged at equal intervals in a row along the length direction of the detection casing 1, and the gamma ray detection unit 6 positioned at the middle position is a position detection unit W. The gamma-ray detection unit 6 includes a scintillation crystal array that receives gamma rays and generates scintillation light, which is transmitted to a photodetector that converts an optical signal into an electrical signal, and a photodetector. The structure of the gamma ray detecting unit 6 is conventional, and thus will not be described in detail here.
Each gamma ray detection unit 6 is provided with a collimator 5 in a matching way, the collimator 5 is used for transmitting gamma rays meeting the collimation direction to the corresponding gamma ray detection units 6, and the gamma rays in other directions cannot be transmitted to the gamma ray detection units 6; the alignment direction of the collimator 5 is parallel to the axis direction of the handle shell 2, and the alignment direction of the collimator 5 corresponding to the position detection unit W coincides with the axis of the handle shell 2; the spacing between adjacent collimators 5 is 3mm.
A displacement sensor 7 and an angle sensor 8 are provided in the handle housing 2, the displacement sensor 7 and the angle sensor 8 being used for sensing the displacement and the angle of the position detecting unit W, respectively.
The detection shell 1 is provided with a plurality of indicator lamps 4 which respectively correspond to the N gamma ray detection units 6 and are used for indicating whether the corresponding gamma ray detection units 6 have signal response or not, and when the gamma ray detection units 6 detect the tumor 200, the corresponding indicator lamps 4 emit indicator light; when the gamma ray detection unit 6 does not detect the tumor 200, the corresponding indicator lamp 4 does not emit the indicator light. The indication light can be changed from green light to red light, from no light to light, or from stable light to flashing light.
The gamma ray detection unit 6, the displacement sensor 7, the angle sensor 8 and the indicator lamp 4 are all connected with the controller, and corresponding connecting lines are integrated together to form the merging line 3.
The probe housing 1 is provided with an indication mark 9, and the indication mark 9 is used for guiding the indication lamp 4 corresponding to the position detection unit W.
The detection shell 1 is provided with a zeroing key 10, and the zeroing key 10 is connected with the controller and is used for sending a signal to the controller so as to enable the displacement sensor 7 and the angle sensor 8 to count and zero.
After injecting the nuclide tracer drug technetium-99 m into the human body, the location of the tumor 200 in the human body is probed using this embodiment.
The application method of the embodiment comprises the following steps:
(1) The manual vertical hand-held gamma ray detector 100 is attached to the human epidermis 300 on the bottom arc surface of the detection shell 1; then, the gamma ray detector 100 is translated in the width direction of the probe housing 1.
(2) When a certain gamma ray detection unit 6 receives the gamma ray 1 When the gamma ray detection unit 6 detects the tumor 200, the controller controls the corresponding indicator lamp 4 to emit indicator light.
(3) Manually marking a position P1 (shown in fig. 8) on the human epidermis 100 corresponding to the tumor 200, and then translating the gamma ray detector 100 along the length direction of the detection housing 1 to enable the position detection unit W to move to the position P1, wherein the position detection unit W is positioned at the position P1 when the indication light is emitted by the indication lamp 4 corresponding to the position detection unit W; the gamma ray detector 100 stops moving, and the controller is controlled to make the counts of the displacement sensor 7 and the angle sensor 8 return to zero, wherein the control mode can be to input a count return-to-zero instruction to the controller through a man-machine interaction device, or can be to make the zero key 10 send a signal to the controller through controlling the zero key 10, so that the counts of the displacement sensor 7 and the angle sensor 8 return to zero.
(3) The handle housing 2 is tilted by an angle θ, and then the gamma ray detector 100 is translated in the width direction of the probe housing 1, and the indication light of the indication lamp 4 corresponding to the position detection unit W disappears.
(4) When the position detecting unit W receives the ray gamma 2 At this time, the indicator lamp 4 corresponding to the position detecting unit W emits the indicator light again, and at this time, the gamma ray detector 100 is located at the position P2 (as shown in fig. 8) on the split skin 100, and the controller calculates the depth h of the tumor 200 relative to the position P1 on the human skin 100 according to the data sent by the displacement sensor 7 and the angle sensor 8, so as to obtain the exact position of the tumor 200 in the human body.
The data sent to the controller on the displacement sensor 7 are horizontal displacement x and vertical displacement z, the data sent to the controller on the angle sensor 8 is measurement inclination angle θ, and the depth h of the tumor 200 relative to the position P1 on the human epidermis 100 is:
h=z+x/tanθ
the principle is shown in fig. 8, h=z+h 1 ，h 1 =x/tanθ。
The surgeon may generally determine the subcutaneous location of tumor 200 in conjunction with the results of the probing of gamma ray detector 100.
Compared with the annular PET detector and the flat PET detector in the prior art, the annular PET detector is simple in structure, light, low in cost and convenient to use.
Claims (6)
1. A linear array gamma ray detector for detecting tumor in operation, which is characterized in that: the device comprises a probing shell (1), wherein the center of the top of the probing shell (1) is fixedly connected with a handle shell (2), and the bottom of the probing shell (1) is used for contacting with human epidermis;
n gamma ray detection units (6) are arranged in the detection shell (1), wherein N=2n+1, and N is more than or equal to 1; the N gamma ray detection units (6) are arranged at equal intervals in a row along the length direction of the detection shell (1), and the gamma ray detection units (6) positioned at the middle position are position detection units W;
each gamma ray detection unit (6) is provided with a collimator (5) in a matching way, the collimator (5) is used for transmitting gamma rays meeting the collimation direction to the corresponding gamma ray detection unit (6), the collimation direction of the collimator (5) is parallel to the axial direction of the handle shell (2), and the collimation direction of the collimator (5) corresponding to the position detection unit W is coincident with the axial direction of the handle shell (2);
a displacement sensor (7) and an angle sensor (8) are arranged in the handle shell (2), and the displacement sensor (7) and the angle sensor (8) are respectively used for sensing the displacement and the angle of the position detection unit W;
a plurality of indicator lamps (4) are arranged on the exploration shell (1) and respectively correspond to N gamma ray detection units (6) for indicating whether the corresponding gamma ray detection units (6) have signal response or not;
the gamma ray detection unit (6), the displacement sensor (7), the angle sensor (8) and the indicator lamp (4) are all connected with the controller.
2. The linear array gamma-ray detector for intraoperative tumor detection of claim 1, wherein: the detection shell (1) is provided with an indication mark (9), and the indication mark (9) is used for guiding an indication lamp (4) corresponding to the position detection unit W.
3. The linear array gamma-ray detector for intraoperative tumor detection of claim 1, wherein: the distance between adjacent collimators (5) is 3 mm-5 mm.
4. The linear array gamma-ray detector for intraoperative tumor detection of claim 1, wherein: n is more than or equal to 10 and less than or equal to 15.
5. The linear array gamma-ray detector for intraoperative tumor detection of claim 1, wherein: the surface of the exploration shell (1) contacted with the epidermis of the human body is an arc surface.
6. The linear array gamma-ray detector for intraoperative tumor detection of claim 1, wherein: the detection shell (1) is provided with a zeroing key (10), and the zeroing key (10) is connected with the controller and is used for sending a signal to the controller so as to enable the displacement sensor (7) and the angle sensor (8) to count and zeroing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321391737.1U CN220459363U (en) | 2023-06-02 | 2023-06-02 | Linear array gamma ray detector for detecting tumor in operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321391737.1U CN220459363U (en) | 2023-06-02 | 2023-06-02 | Linear array gamma ray detector for detecting tumor in operation |
Publications (1)
| Publication Number | Publication Date |
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| CN220459363U true CN220459363U (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321391737.1U Active CN220459363U (en) | 2023-06-02 | 2023-06-02 | Linear array gamma ray detector for detecting tumor in operation |
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| CN (1) | CN220459363U (en) |
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2023
- 2023-06-02 CN CN202321391737.1U patent/CN220459363U/en active Active
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