CN217593626U - Multifunctional quality control die body for accelerator lung cancer stereotactic radiotherapy - Google Patents
Multifunctional quality control die body for accelerator lung cancer stereotactic radiotherapy Download PDFInfo
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- CN217593626U CN217593626U CN202220231757.1U CN202220231757U CN217593626U CN 217593626 U CN217593626 U CN 217593626U CN 202220231757 U CN202220231757 U CN 202220231757U CN 217593626 U CN217593626 U CN 217593626U
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Abstract
The utility model belongs to the field of instrument detection and calibration, and discloses a multifunctional quality control mold body for accelerator lung cancer stereotactic radiotherapy, which comprises a main structure and detachable secondary structures arranged on two sides of the main structure; the main structure is a cube, a central cube is arranged in the center, and a metal ball is arranged in the center of the central cube; and the outer surface of the main structure is marked with vertically crossed scale marks.
Description
Technical Field
The utility model belongs to the instrument detects and the calibration field, especially relates to a multi-functional quality control die body for accelerator lung cancer stereotactic radiotherapy.
Background
In the stereospecific radiotherapy of lung cancer, the following three properties of an accelerator must be strictly controlled to ensure the accuracy of radiotherapy dosage: 1. mechanical precision; 2. dose accuracy; 3. and (4) image precision. At present, measurement die bodies or tools used for the three parameters are mutually independent, so that the use is not easy, and the working efficiency is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to integrate the multi-parameter performance detection tool, which is used for the quality control of the lung cancer stereotactic radiotherapy and improves the measurement precision and the work efficiency.
In order to solve the problems, the technical scheme is as follows:
a multifunctional quality control mold body for accelerator lung cancer stereotactic radiotherapy comprises a main structure and detachable secondary structures arranged on two sides of the main structure; the main structure is a cube, a central cube is arranged in the center, and a metal ball is arranged in the center of the central cube; and the outer surface of the main structure is marked with vertically crossed scale marks.
Preferably, the primary structure and the secondary structure are connected through a latch structure.
Preferably, wedge-shaped grooves are formed in two sides of the primary structure, and corresponding wedge-shaped protrusions are arranged on the secondary structure to form the plug pin structure.
Preferably, the secondary structure is a semi-cylinder, and the wedge-shaped protrusion is arranged on a rectangular plane of the semi-cylinder.
Preferably, a hollow channel is arranged in the secondary structure, a lung simulation die body plug-in is arranged in the hollow channel, and a tumor simulation block is arranged on the lung simulation die body plug-in.
Preferably, an ionization chamber slot is formed in the tumor simulation block and communicated with the exterior of the lung simulation phantom plug-in unit; when the ionization chamber is used, the ionization chamber slot is inserted into the ionization chamber, and then the combined dosimeter can measure the absolute point dose in the secondary structure (non-uniform die body).
Preferably, a film slot is arranged on the lung simulation phantom plug-in; in use, the combined scanner can measure the planar dose in the substructure (non-uniform die body) after the film slots insert film.
Preferably, a rotatable double-layer plate is arranged at the top of the main structure, and lead point marks and square field marks are arranged in the center of the double-layer plate at equal intervals in the cross direction; the bilayer plate interlayer forms a film groove.
Preferably, the main structure is connected with the double-layer plate through a telescopic rotating arm, and the telescopic rotating arm is arranged on two sides of the main structure.
Through the stretching and the rotation of the telescopic rotating arm, the adjustable double-layer plate is horizontally or vertically arranged at the top end of the main structure.
Preferably, the bottom of the main structure is provided with a telescopic supporting leg.
The main structure can be adjusted to have proper height through the extension and the rotation of the telescopic supporting feet.
Compared with the prior art, use the utility model discloses there is following beneficial effect:
the multi-parameter performance detection tool is integrated, is used for quality control of lung cancer stereotactic radiotherapy, can strictly control the performances of mechanical precision, dosage precision and image precision simultaneously, and improves the measurement precision and the working efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the vertical state of the double-layer plate of the present invention;
figure 3 is a schematic view of the outer surface of the main structure of the present invention;
fig. 4 is a schematic plan view of a double-layer plate of the present invention;
FIG. 5 is an enlarged schematic view of the wedge-shaped protrusion of the present invention;
fig. 6 is a schematic view of a pulmonary phantom insert of the present invention;
figure 7 is a schematic view of another version of the pulmonary phantom insert of the present invention.
The tumor simulator comprises a main structure 1, a central cube 101, a metal ball 1011, vertically crossed scale lines 102, a secondary structure 2, a hollow channel 201, a lung simulation die body plug-in 202, a film slot 2021, a tumor simulation block 203, an ionization chamber slot 2031, a bolt structure 3, a wedge-shaped groove 301, a wedge-shaped protrusion 302, a double-layer plate 4, a telescopic rotating arm 401, a lead point mark, a square field mark 402, a film slot 403 and a telescopic supporting leg 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1-7, the utility model relates to a multifunctional quality control mold body for accelerator lung cancer stereotactic radiotherapy, which comprises a main structure 1 and a secondary structure 2 which is arranged on two sides of the main structure 1 and can be detached. The main structure 1 is a cube, a central cube 101 is arranged at the center, and a small metal ball 1011 is arranged at the center of the central cube 101; the outer surface of the main structure 1 is marked with vertically intersecting graduation marks 102.
The primary structure 1 is connected with the secondary structure 2 through a pin structure 3. Two sides of the primary structure 1 are provided with wedge-shaped grooves 301, and the secondary structure 2 is provided with corresponding wedge-shaped protrusions 302 to form the plug pin structure 3. The secondary structure 2 is a semi-cylinder, and the wedge-shaped protrusions 302 are arranged on a rectangular plane of the semi-cylinder.
A hollow passage 201 is arranged in the secondary structure 2, and a lung simulation phantom insert 202 is arranged in the hollow passage 201 to completely fill the hollow passage 201.
There are two types of lung phantom inserts 202, one type of lung phantom insert 202 having a tumor simulation block 203 disposed thereon. An ionization chamber slot 2031 is arranged on the tumor simulation block 203, and the ionization chamber slot 2031 is communicated with the outside of the lung simulation phantom plug-in 202; when in use, the ionization chamber slot 2031 can be inserted into the ionization chamber and then the combined dosimeter can measure the absolute spot dose in the non-uniform model.
A film slot 2021 is arranged on the other type of the lung simulation phantom plug-in 202; when in use, the combination scanner can measure the plane dose in the non-uniform model after the film slot 2021 is inserted into the film.
The two lung phantom insert 202 alternate between measuring point dose and planar dose, respectively.
The top of the main structure 1 is connected with a rotatable double-layer plate 4 through telescopic rotating arms 401 arranged on two sides of the main structure 1, the adjustable double-layer plate 4 is horizontally or vertically arranged at the top end of the main structure 1 through the telescopic and rotary of the telescopic rotating arms 401, and lead point marks and square field marks 402 are arranged in the center of the upper part of the double-layer plate 4 at equal intervals in the cross direction; the double layer 4 sandwich forms a film slot 403. When not in use, the double plate 4 together with the telescopic rotating arm 401 can be detached from the main structure 1.
The bottom of the main structure 1 is provided with a telescopic supporting foot 5, and the height of the telescopic supporting foot can be adjusted, so that the main structure 1 is kept at a proper height.
Example 2
As shown in fig. 1 to 7, the operation is as follows:
1. die body main structure 1
The function is as follows: the die body main structure 1 is used for measuring the mechanical precision and the image precision of an accelerator
(1) The main structure 1 of the mold body is a cube having a size of about 25X 25cm, and is filled with solid water (density: 1.045 g/cm) 3 ) The material is made, and each surface of the die body is marked with vertically crossed scale marks 102 for judging whether the die body is in a horizontal position.
The middle of the cube is a central cube 101 with the size of 10 multiplied by 10cm, and a metal small ball 1011 is arranged at the center of the central cube 101 and can be used for detecting the deviation of a mechanical isocenter and an image center and the error of image alignment accuracy.
When the device is used, the accelerator laser lamp is overlapped with the external marking line of the die body, the die body is placed at the mechanical isocenter position of the accelerator, the images are respectively shot at the angles (0 degree, 90 degrees, 270 degrees and 180 degrees) of the frame, and the deviation between the mechanical isocenter and the image center can be measured. The die body is artificially manufactured with a certain positioning error, and after scanning the CBCT image and performing image matching, the image positioning accuracy error can be measured.
Two plates with the thickness of 5mm are arranged on the main structure 1 to form a double-layer plate 4, and one plate on the upper surface is provided with lead point marks with different sizes and square field mark lines 402, so that the device can be used for measuring the in-place precision of a lead door and the in-place precision of a multi-leaf grating. A film groove 403 is formed between the two plates, and a no-clean film is placed in the film groove and exposed by an accelerator, so that the detection of the consistency of the light radiation field can be realized. The collimator rotation concentricity and the treatment couch rotation concentricity in the accelerator annual inspection project can be measured by horizontally placing the middle insertion washing-free film, the double-layer plate 4 is telescopically rotated and vertically placed through the telescopic rotating arm 401, and the rack rotation concentricity in the accelerator annual inspection project can be measured by the star-shaped radiation field by inserting the middle insertion washing-free film.
The main structure 1 below is provided with 4 telescopic supporting legs 5 of adjustable height, and through the height of adjusting 4 telescopic supporting legs 5, the scale mark of combination die body surface can make the die body adjust to horizontal position.
After the secondary structure 2 is detached, the long pointer structure protruding outwards can be inserted into the telescopic rotating arm 401, the structure is a plug-in unit and can be detached after being used), and then the rotating concentricity of the lunar examination project rack of the accelerator and the rotating concentricity of the treatment bed can be measured by matching with the front pointer of the accelerator handpiece.
2. Mold substructure 2
The function is as follows: die body substructure 2 for measuring absolute dose in non-uniform die bodies
The mold substructure 2 consists of half cylinders (half-moon shaped). The mold body secondary structures 2 and the lung simulation mold body plug-in units 202 are both made of lung tissue equivalent materials and are half-moon-shaped, and when the mold body secondary structures 2 are used, the two mold body secondary structures 2 need to be fixed on two sides of the cubic mold body of the main structure 1 through the plug pin structures 3.
The hollow channel 201 is designed in the middle of the secondary structure 2, a circular lung simulation phantom plug-in 202 can be placed in the middle, the plug-in is made of lung tissue equivalent materials, a tumor simulation block 203 (water density) is arranged in the middle of the lung simulation phantom plug-in 202, an ionization chamber slot 2031 is reserved in the tumor simulation block 203, and the ionization chamber slot 2031 leads to the outside of the lung simulation phantom plug-in 202. The integrated dosimeter may measure the point absolute dose within the non-uniform model after the ionization chamber slot 2031 is inserted into the ionization chamber.
When the device is used, the laser lamp of the accelerator is aligned to be positioned according to the scale line on the outer surface of the main structure 1 of the die body, the measurement sensitive volume part of the ionization chamber is positioned at the mechanical isocenter position, and the beam emitted by the accelerator can measure the absolute dose of the inner point of the non-uniform die body.
Two different lung phantom inserts 202 can be designed, and the ionization chamber slot 2031 and the film slot 2021 can be designed in the inserts to measure the point dose and the plane dose respectively.
The above description is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (10)
1. A multifunctional quality control die body for accelerator lung cancer stereotactic radiotherapy is characterized by comprising a main structure and detachable secondary structures arranged at two sides of the main structure; the main structure is a cube, a central cube is arranged in the center, and a metal ball is arranged in the center of the central cube; and scale marks which are vertically crossed are marked on the outer surface of the main structure.
2. The multifunctional quality control phantom for use in the accelerated stereotactic radiotherapy of lung cancer of claim 1, wherein said primary structure is connected to said secondary structure by a bayonet structure.
3. The multifunctional quality control mold body for the accelerator lung cancer stereotactic radiotherapy as claimed in claim 2, wherein wedge-shaped grooves are provided on both sides of said primary structure, and corresponding wedge-shaped protrusions are provided on said secondary structure to form said plug pin structure.
4. The multifunctional quality control phantom for use in the stereotactic radiotherapy of accelerated lung cancer of claim 3, wherein said secondary structure is a semi-cylinder and said wedge-shaped protrusions are disposed on a rectangular plane of said semi-cylinder.
5. The multifunctional quality control phantom for use in the stereotactic radiotherapy of accelerated lung cancer of claim 1, wherein a hollow channel is provided within said substructure, said hollow channel having a lung phantom insert disposed therein.
6. The multifunctional quality control phantom for accelerator lung cancer stereotactic radiotherapy as claimed in claim 5, wherein said lung phantom insert is provided with a tumor simulation block, said tumor simulation block is provided with an ionization chamber insert slot, said ionization chamber insert slot is communicated with the exterior of said lung phantom insert; when the ionization chamber is used, the ionization chamber slot is inserted into the ionization chamber, and then the combined dosimeter can measure the absolute dose of the point in the secondary structure.
7. The multifunctional quality control phantom for accelerator lung cancer stereotactic radiotherapy as claimed in claim 5, wherein said lung phantom insert is provided with a film slot; in use, the combination scanner can measure the planar dose in the substructure after the film slot has inserted film.
8. The multifunctional quality control module body for the stereotactic radiotherapy of accelerated lung cancer as claimed in claim 1, wherein a rotatable double-layer plate is arranged on top of said main structure, and lead point marks and square field lines are arranged at the center of said double-layer plate and at equal intervals in the cross direction; the bilayer plate interlayer forms a film groove.
9. The multifunctional quality control mold body for use in the stereotactic radiotherapy of accelerated lung cancer according to claim 8, wherein said main structure is connected to said double-layer plate by means of telescopic rotating arms disposed on both sides of said main structure.
10. The multifunctional quality control module body for use in the stereotactic radiotherapy of accelerated lung cancer as claimed in claim 1, wherein said main structure is provided with telescopic supporting legs at the bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220231757.1U CN217593626U (en) | 2022-01-27 | 2022-01-27 | Multifunctional quality control die body for accelerator lung cancer stereotactic radiotherapy |
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| CN202220231757.1U CN217593626U (en) | 2022-01-27 | 2022-01-27 | Multifunctional quality control die body for accelerator lung cancer stereotactic radiotherapy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117839100A (en) * | 2023-12-26 | 2024-04-09 | 中核粒子医疗科技有限公司 | Multifunctional die body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117839100A (en) * | 2023-12-26 | 2024-04-09 | 中核粒子医疗科技有限公司 | Multifunctional die body |
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