CN215900764U - Die body for radiotherapy quality control - Google Patents
Die body for radiotherapy quality control Download PDFInfo
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- CN215900764U CN215900764U CN202122034532.5U CN202122034532U CN215900764U CN 215900764 U CN215900764 U CN 215900764U CN 202122034532 U CN202122034532 U CN 202122034532U CN 215900764 U CN215900764 U CN 215900764U
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Abstract
The utility model discloses a die body for radiotherapy quality control, which comprises: the device comprises a cuboid and a straight needle, wherein the upper surface of the cuboid is provided with scale marks, the right and rear surfaces of the cuboid are provided with horizontal detection devices, and the front surface of the cuboid is horizontally provided with a mounting hole groove; the straight needle comprises a needle point and a needle rod, wherein a mounting hole groove is horizontally formed in the bottom surface of the needle rod, the needle point is horizontally arranged on the needle rod through the mounting hole groove, and the straight needle is horizontally arranged in a cuboid through the mounting hole groove. The lower surface of cuboid is equipped with the magnetic sheet, and the scale mark of the upper surface of cuboid is horizontal scale and vertical scale, and the central point of scale is the central point of cuboid, and central point department is red circular plumbous point, and the surface of needle bar is equipped with the scale mark. The die body has simple structure and simple and convenient operation, and can be used for controlling the level of an accelerator bed, the level of a machine head, the size of a radiation field, the consistency of the radiation field and the radiation field of a light field, the motion precision of the bed, the isocenter of a frame and the like and the quality of a laser lamp.
Description
Technical Field
The utility model relates to the technical field of radiotherapy, in particular to a die body for radiotherapy quality control.
Background
Radiotherapy, surgery and chemotherapy are the main means of tumor treatment. In recent years, with the rapid development of computer technology medical imaging technology, radiation physics and radiobiology, radiotherapy has been developed from the initial conventional radiotherapy to the current precise radiotherapy technology mainly based on three-dimensional conformal radiotherapy and intensity modulated radiotherapy. The implementation of precise radiotherapy puts higher demands on daily quality control.
At present, in quality control related projects, except for dose measurement, commercial standard instruments are provided, and inspection of other projects does not have detection die bodies with unified standards, so that local materials are generally used, and measurement errors are introduced invisibly; and detect different projects and need the physicist to change different detection appurtenance, influence the efficiency of matter accuse.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a die body for radiotherapy quality control, which solves the technical problems that in the prior art, no detection die body with a unified standard exists in related quality control items, so that measurement errors are introduced, and in the process of detecting different items, a physicist needs to replace different detection auxiliary tools, so that the quality control efficiency is influenced.
In order to achieve the purpose, the utility model adopts the technical scheme that: providing a phantom for radiotherapy quality control, the phantom for radiotherapy quality control comprising:
the device comprises a cuboid, a base and a cover, wherein one surface of the cuboid is provided with scale marks, and the surface of the cuboid, which is provided with the scale marks, is provided with a mounting slotted hole;
the straight needle comprises a needle point and a needle rod, wherein one end of the needle rod is provided with an installation groove hole, the needle point is matched in the installation groove hole of the needle rod, the other end of the needle rod is matched in the installation groove hole of the cuboid, and the straight needle is horizontally arranged;
the horizontal detection devices are arranged on two surfaces of the cuboid, which are vertical to the surface provided with the scale marks in pairs;
the cuboid is made of phosphate glass activated by silver ions or other radiation photoluminescence materials with radiation memory function;
a magnetic sheet is arranged on the surface of the cuboid parallel to the surface of the scale mark;
the scale marks of the cuboid are transverse scales and longitudinal scales, the central point of the scales is the central point of the cuboid, and the central point is a red round lead point;
the surface of the needle rod is provided with scale marks.
In one embodiment, the length, width and height of the cuboid are respectively 10cm, 10cm and 3 cm.
In one embodiment, the needle shaft surface is graduated by 5 cm.
In one embodiment, the level detection device comprises a first bubble level gauge and a second bubble level gauge.
In one embodiment, the needle shaft is made of acrylic.
In one embodiment, the cuboid is provided with a hole matched with the radiotherapy positioning rod.
The quality control method using the device comprises the following steps:
the die body is used for quality control of the accelerator bed level: the cuboid is placed on the accelerator treatment bed, and the level of the bed in the direction X, Y can be detected through the level gauges on the right side and the back side.
The die body is used for quality control of the accelerator head level: set up accelerator frame to 0 or 180, pass through the magnetic sheet of lower surface with the cuboid and adsorb on the accelerator aircraft nose, the spirit level of accessible right side, rear side detects the accelerator aircraft nose at X, Y orientation this moment.
The die body is used for quality control of the size of the radiation field: set up accelerator frame and aircraft nose to 0, the cuboid is placed on accelerator treatment bed, and the position of adjustment cuboid makes its horizontal scale mark, vertical scale mark and accelerator cross line coincidence, and the central point of scale mark and accelerator cross line central point coincide, and adjustment bed position makes Source Skin Distance (SSD) 100cm, adjusts the field size, looks over the actual size of the wild on the cuboid. The die body can be used for quality control of the size of a radiation field of 10 multiplied by 10cm or less.
The die body is used for quality control of light field and radiation field consistency: setting an accelerator frame and a handpiece to 0 degree, placing the cuboid on an accelerator treatment bed, adjusting the position of the cuboid to ensure that a transverse scale line and a longitudinal scale line of the cuboid coincide with an accelerator cross line, ensuring that the center point of the scale line coincides with the center point of the accelerator cross line, adjusting the position of the bed to ensure that the source-skin distance (SSD) is 100cm, adjusting the size of a field of radiation, emitting beams by an accelerator, checking the error between the size of a radiation-induced light emitting area and the size of an actual light field on the irradiated cuboid, and determining the error as the current measurement error. The die body can be used for quality control of consistency of light field and radiation field of 10 multiplied by 10cm or less.
The die body is used for quality control of the motion precision of the bed: setting an accelerator frame and a handpiece to 0 degree, placing the accelerator and the cuboid on an accelerator treatment bed, adjusting the position of the cuboid to ensure that a transverse scale line and a longitudinal scale line of the cuboid coincide with an accelerator cross line, the center point of the scale line coincides with the center point of the accelerator cross line, adjusting the position of the bed to ensure that the source-skin distance (SSD) is 100cm, moving the bed for a certain distance in any direction from front to back and from left to right according to requirements, and subtracting the moving distance from the distance between the center point of the moved scale line and the center point of the accelerator cross line to obtain the current measurement error.
The position of the cuboid is adjusted to enable the transverse scale lines and the longitudinal scale lines to coincide with the accelerator cross line, the center points of the scale lines coincide with the center point of the accelerator cross line, and the bed position is adjusted to enable the Source Skin Distance (SSD) to be 100 cm. And moving the bed by a corresponding distance in any vertical direction as required, opening the optical distance scale of the accelerator after moving, subtracting the reading of the optical distance scale at the central point of the scale mark from 100 to obtain the actual vertical movement distance of the bed, and subtracting the predicted moving distance to obtain the current measurement error.
The die body is used for quality control of the machine isocenter: setting an accelerator frame and a machine head to 0 degree, adjusting the position of a cuboid to ensure that a transverse scale line and a longitudinal scale line of the cuboid coincide with an accelerator cross line, the central point of the scale line coincides with the central point of the accelerator cross line, and adjusting the position of a bed to ensure that the Source Skin Distance (SSD) is 100 cm. And rotating the frame to a corresponding angle according to the requirement, opening the optical distance ruler of the accelerator, and subtracting the reading of the optical distance ruler at the central point of the scale mark by 100 to obtain the error of the isocenter.
The die body is used for quality control of the position of the laser lamp: set up accelerator frame and aircraft nose to 0, to pass through mounting hole groove horizontal installation in the cuboid with straight needle, the die body is placed on accelerator treatment bed, and adjustment bed position makes SSD be 100cm, and the position of adjustment die body makes the position of needle point and accelerator cross central point coincidence, opens the laser lamp, places A4 paper and looks over the position of laser lamp center and needle point around the needle point, can guide the regulation of laser lamp.
One or more technical solutions described above in the embodiments of the present invention have at least the following technical effects or advantages:
the utility model has simple structure and simple operation, can carry out quality control detection on a plurality of projects and saves quality control time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a phantom for quality control of phantom radiotherapy according to the present invention.
Wherein the respective reference numerals are as follows:
1. a cuboid; 2. a needle bar; 3. a needle tip; 4. a first horizontal bubble meter; 5. a second horizontal bubble gauge.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, an embodiment of the present application provides a mold body for quality control of radiotherapy, which includes a rectangular parallelepiped 1, a straight needle, and a horizontal detection device. Wherein, a face of cuboid 1 is equipped with the scale mark, has seted up the installation slotted hole on the face that cuboid 1 was provided with the scale mark. The straight needle comprises a needle point 3 and a needle rod 2, a mounting groove hole is formed in one end of the needle rod 2, the needle point 3 is matched in the mounting groove hole of the needle rod 2, the other end of the needle rod 2 is matched in the mounting groove hole of the cuboid 1, and the straight needle is horizontally arranged. The horizontal detection device is arranged on two faces of the cuboid 1, which are perpendicular to each other and provided with scale mark faces. The cuboid 1 is made of phosphate glass activated by silver ions or other radiation photoluminescence materials with radiation memory function. The surface of the cuboid 1 parallel to the surface of the scale mark is provided with a magnetic sheet. The scale marks of the cuboid 1 are horizontal scales and longitudinal scales, the central point of the scales is the central point of the cuboid, and the central point is a red round lead point. The surface of the needle rod is provided with scale marks.
The surface of the needle rod 2 is provided with scale marks of 5cm, and the scale origin coincides with the 5cm scale marks of the cuboid 1.
The lower surface of the cuboid 1 is provided with a magnetic sheet which can be adsorbed on the machine head to measure the level of the machine head.
The cuboid 1 is made of phosphate glass activated by silver ions or other radiation photoluminescence materials with radiation memory function, the needle rod 2 is made of acrylic, and a hole matched with a radiotherapy positioning rod (Lockbar) for use is formed in the cuboid 1.
The quality control method using the die body is as follows:
quality control of accelerator bed level: the cuboid 1 is placed on an accelerator treatment couch, and the level of the couch in the X direction can be detected by the first bubble level 5 on the right side, and the level of the couch in the Y direction can be detected by the second bubble level 4 on the rear side.
Quality control of accelerator head level: set up accelerator frame to 0 or 180, adsorb cuboid 1 on the accelerator aircraft nose through the magnetic sheet of lower surface, the first bubble spirit level 5 on accessible right side detects the level of accelerator aircraft nose in the X direction this moment, and the second bubble spirit level 4 of rear side detects the level of accelerator aircraft nose in the Y direction.
Quality control of the size of the radiation field: setting an accelerator frame and a handpiece to 0 degree, placing the cuboid 1 on an accelerator treatment bed, adjusting the position of the cuboid 1 to ensure that a transverse scale line and a longitudinal scale line of the cuboid 1 coincide with an accelerator cross line, the central point of the scale line coincides with the central point of the accelerator cross line, adjusting the position of the bed to ensure that a source-skin distance (SSD) is 100cm, adjusting the field size to be 5 multiplied by 5cm and 10 multiplied by 10cm, and checking the actual size of the light field on the cuboid.
Quality control of light field and radiation field consistency: setting an accelerator frame and a handpiece to 0 degree, placing the cuboid 1 on an accelerator treatment bed, adjusting the position of the cuboid 1 to ensure that a transverse scale line and a longitudinal scale line of the cuboid 1 coincide with an accelerator cross line, ensuring that the center point of the scale line coincides with the center point of the accelerator cross line, adjusting the position of the bed to ensure that the Source Skin Distance (SSD) is 100cm, adjusting the beam-out of the accelerator after the radiation field size is 5 multiplied by 5cm and 10 multiplied by 10cm respectively, checking the error between the size of a radiation-induced light emitting area on the irradiated cuboid 1 and the actual light field size, wherein the error is the error of current measurement.
Quality control of bed motion precision: setting an accelerator frame and a machine head to 0 degree, placing the cuboid 1 on an accelerator treatment bed, adjusting the position of the cuboid 1 to ensure that a transverse scale line and a longitudinal scale line of the cuboid 1 coincide with an accelerator cross line, the central point of the scale line coincides with the central point of the accelerator cross line, adjusting the position of the bed to ensure that the Source Skin Distance (SSD) is 100cm, moving the bed in any one of the front, back, left and right directions by 5cm, 10cm and 15cm, and subtracting the moving distance from the distance between the central point of the moved scale line and the central point of the accelerator cross line to obtain the current measurement error.
The position of the cuboid 1 is adjusted to enable the transverse scale lines and the longitudinal scale lines to coincide with the accelerator cross line, the center points of the scale lines coincide with the center point of the accelerator cross line, and the bed position is adjusted to enable the Source Skin Distance (SSD) to be 100 cm. And moving the bed by a corresponding distance in any vertical direction as required, opening the optical distance scale of the accelerator after moving, subtracting the reading of the optical distance scale at the central point of the scale mark from 100 to obtain the actual vertical movement distance of the bed, and subtracting the predicted moving distance to obtain the current measurement error.
Quality control of machine isocenter: setting an accelerator frame and a machine head to 0 degree, adjusting the position of the cuboid 1 to ensure that a transverse scale line and a longitudinal scale line of the cuboid 1 coincide with an accelerator cross line, the central point of the scale line coincides with the central point of the accelerator cross line, and adjusting the position of a bed to ensure that the Source Skin Distance (SSD) is 100 cm. And rotating the frame to a corresponding angle according to the requirement, opening the optical distance ruler of the accelerator, and subtracting the reading of the optical distance ruler at the central point of the scale mark by 100 to obtain the error of the isocenter.
Quality control of the laser lamp position: set up accelerator frame and aircraft nose to 0, to pass through mounting hole groove horizontal installation in cuboid 1 with straight needle, the die body is placed on accelerator treatment bed, and adjustment bed position makes SSD be 100cm, and the position of adjustment die body makes the position of needle point 3 and the coincidence of accelerator cross central point, opens the laser lamp, places A4 paper and looks over the position of laser lamp center and needle point 3 around needle point 3, can guide the regulation of laser lamp.
According to the embodiment, the device has the advantages of simple structure and convenience in operation, can be used for performing quality control detection on a plurality of projects, and saves quality control time.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A phantom body for radiation therapy quality control, said phantom body for radiation therapy quality control comprising:
the device comprises a cuboid, a base and a cover, wherein one surface of the cuboid is provided with scale marks, and the surface of the cuboid, which is provided with the scale marks, is provided with a mounting slotted hole;
the straight needle comprises a needle point and a needle rod, wherein one end of the needle rod is provided with an installation groove hole, the needle point is matched in the installation groove hole of the needle rod, the other end of the needle rod is matched in the installation groove hole of the cuboid, and the straight needle is horizontally arranged;
the horizontal detection devices are arranged on two surfaces of the cuboid, which are vertical to the surface provided with the scale marks in pairs;
the cuboid is made of phosphate glass activated by silver ions or other radiation photoluminescence materials with radiation memory function;
a magnetic sheet is arranged on the surface of the cuboid parallel to the surface of the scale mark;
the scale marks of the cuboid are transverse scales and longitudinal scales, the central point of the scales is the central point of the cuboid, and the central point is a red round lead point;
the surface of the needle rod is provided with scale marks.
2. The phantom for radiation therapy quality control according to claim 1, wherein:
the length, the width and the height of the cuboid are respectively 10cm, 10cm and 3 cm.
3. The phantom for radiation therapy quality control according to claim 1, wherein:
the scale on the surface of the needle rod is 5 cm.
4. The phantom for radiation therapy quality control according to claim 1, wherein:
the level detection device comprises a first bubble level gauge and a second bubble level gauge.
5. The phantom for radiation therapy quality control according to claim 1, wherein:
the needle bar is made of acrylic.
6. The phantom for radiation therapy quality control according to claim 1, wherein:
and the cuboid is provided with a hole matched with the radiotherapy positioning rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122034532.5U CN215900764U (en) | 2021-08-26 | 2021-08-26 | Die body for radiotherapy quality control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122034532.5U CN215900764U (en) | 2021-08-26 | 2021-08-26 | Die body for radiotherapy quality control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215900764U true CN215900764U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122034532.5U Active CN215900764U (en) | 2021-08-26 | 2021-08-26 | Die body for radiotherapy quality control |
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| CN (1) | CN215900764U (en) |
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- 2021-08-26 CN CN202122034532.5U patent/CN215900764U/en active Active
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