CN101947362B - Multifunctional measurement device for stereotactic radiotherapy - Google Patents
Multifunctional measurement device for stereotactic radiotherapy Download PDFInfo
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- CN101947362B CN101947362B CN 201010514424 CN201010514424A CN101947362B CN 101947362 B CN101947362 B CN 101947362B CN 201010514424 CN201010514424 CN 201010514424 CN 201010514424 A CN201010514424 A CN 201010514424A CN 101947362 B CN101947362 B CN 101947362B
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Abstract
The invention discloses a multifunctional measurement device for stereotactic radiotherapy, and aims to provide a measurement device which combines multiple measurement functions, does not need to be replaced, can measure each item of physical performance parameter in the stereotactic radiotherapy by only replacing an insert therein and can obtain focusing characteristic of a single source per se. The key points of the technical scheme are that: the device consists of a die body outer layer, a die body inner layer, a die body multifunctional insert and a base ring, wherein a body of the measurement device is formed by fixing the outer layer and the inner layer on the base ring with screws; a gap is reserved between each outer layer and each inner layer for inserting a film; and a columnar circular hole is reserved on the inner layer close to the central position of the base ring for placing the multifunctional insert.
Description
Technical field
The present invention relates to a kind of medical measuring device, specifically, is a kind of multifunction measuring set with various plug-in units for stereotactic radiotherapy.
Background technology
The stereotactic radiotherapy technology comprises Multi-source gamma beam radiotherapy technology and X ray stereotactic radiotherapy technology, it is a kind of radiotherapy technology by a plurality of little launched field three-dimensional bundle high-dose irradiations, it has the advantages that dose gradient is large, fractionated dose is high, thus whole system the quality assurance/control is extremely important.The various stereotactic radiotherapy measuring devices that at present domestic and international medical profession is used, can measure some characterisitic parameters of dosage field, it is focus that intersection point for little wild beam axis is arranged: such as focus degree of accuracy, focus absorbed dose rate etc., and be the focal plane for the specific plane perpendicular to coordinate axes of focus: as focus on wild dimensional discrepancy and penumbra.But there is the deficiency of two aspects at least in these measuring devices.At first, often according to one or a few measurement index design, measurement function is more single, needs in the measuring process to change measuring device, just can finish the measurement of whole indexs, and is not only consuming time but also require great effort for a kind of device.Secondly, can only measure active be the focus characteristics that γ-source or X ray head shine the dose distribution of formation jointly, can not measure the focus characteristics of single source self.
Summary of the invention
The object of the invention is to overcome or alleviate at least above-mentioned deficiency of the prior art.For this reason, the invention provides a kind of measuring device that multinomial measurement function is dissolved in one.Use this measuring device can measure physical properties parameter in the stereotactic radiotherapy, comprise focus degree of accuracy, focus absorbed dose rate, focus on wild dimensional discrepancy and penumbra, the focus characteristics of single source self and position precision, target spot absorbed dose rate and the dose distribution of some unknown target spots.Need not more changing device in the measuring process, only need change plug-in unit wherein.
Technical scheme of the present invention is summarized as follows: described measuring device is made of die body skin, internal layer and cylindrical multi-functional plug-in unit and foundation ring, described skin and internal layer are screwed the main body that forms described measuring device on foundation ring, reserving gaps is in order to insert film between skin and the internal layer, and the nearly foundation ring end of described internal layer center is reserved the cylindricality circular hole and placed described multi-functional plug-in unit.
The present invention is different according to the stereotactic radiotherapy position, and the foundation ring end far away of described skin and internal layer can be made different outward appearances: for head stereoscopic Stereotactic radiotherapy system, described device is made the spherical crown cylindricality; For body stereotactic radiotherapy system, described device is made cylinder or like cylinder.The film of described skin and interior interlayer can record the irradiation field that each source forms at the cylinder of distance focus distance, can rebuild the incident path in source according to the irradiation field of incoming position on the film and outgoing position, thereby when obtaining the focus degree of accuracy, can obtain the focusing situation of each beam.Can design measured hole in described skin and the internal layer and place the instruments such as ionization chamber, thermoluminescence, gold or tungsten ball.Described multi-functional plug-in unit is designed to various patterns, in order to place the survey tools such as ionization chamber, film, thermoluminescence, gold or tungsten ball.Described internal layer be connected multi-functional plug-in unit and can make movable pluggable connection, or make fixing non-removable connection.
The invention has the beneficial effects as follows: (1) is simple in structure, and is easy for installation; (2) need not more changing device in the measuring process, only need to change multi-functional plug-in unit and (or) adaptive rod; (3) can easily when obtaining the coefficient focus characteristics of a plurality of beams, obtain the focus characteristics of single beam self.
Description of drawings
Fig. 1 is measuring device embodiment schematic diagram;
Fig. 2 (a) and Fig. 2 (b) are multi-functional plug-in unit schematic diagrams;
Fig. 3 (a) is the adaptive excellent schematic diagram of ionization chamber;
Fig. 3 (b) is the adaptive excellent schematic diagram of cylinder.
1. skins among the figure, 2. internal layer, 3. multi-functional plug-in unit, 4. reserving gaps, 5. measured hole, 6. foundation ring, 7. screw, 8. gold or tungsten ball, 9. ionization chamber shape hole.
The specific embodiment
The measuring device of stereotactic radiotherapy according to an embodiment of the invention comprises skin, internal layer, cylindrical multi-functional plug-in unit and foundation ring.Described skin and internal layer are screwed the main body that forms described measuring device on foundation ring; Reserving gaps is in order to insert film between skin and the internal layer, and the nearly foundation ring end of described internal layer center is reserved the cylindricality circular hole and placed cylindrical multi-functional plug-in unit.Below in conjunction with accompanying drawing and the specific embodiment the present invention is described in further detail:
Embodiment shown in Figure 1 is head stereoscopic Stereotactic radiotherapy measuring device, outer 1 is an arc tip circle cylinder, internal layer 2 is a ball tip circle post, cylindrical hole is reserved in the bottom, insert multi-functional plug-in unit 3, skin 1 is fixed on the foundation ring 6 with screw 7 respectively with internal layer 2, and the reserving gaps 4 between skin 1 and the internal layer 2 is just in time inserted a film, the measuring device of complete.
During measurement, use multi-functional plug-in unit shown in Fig. 2 (a), and at the adaptive rod of cylinder shown in central measuring hole 5 insertion Fig. 3 (b), each beam can stay two launched field hot spots by the film between skin 1 and internal layer 2, and the outgoing spot center of each beam should can be observed the projection of gold or tungsten ball 8, can rebuild accordingly the path of each beam, obtain the focusing situation of each beam, and the locus that can rebuild focus obtains the focus degree of accuracy; Central measuring hole 5 inserts the adaptive rod of ionization chamber shown in Fig. 3 (a), and ionization chamber shape hole 9 can be inserted ionization chamber and be measured the focus absorbed dose rate; Other preformed holes at multi-functional plug-in unit 3 insert the adaptive rod of ionization chamber shown in Fig. 3 (a), and the target spot absorbed dose rate that ionization chamber is measured the arbitrfary point can be inserted in ionization chamber shape hole 9.
Use can be inserted multi-functional plug-in unit shown in Fig. 2 (b) of film in the focal plane, by adjusting the anglec of rotation of plug-in unit in die body, can obtain launched field dimensional discrepancy and the penumbra of arbitrarily angled focussing plane.
Claims (5)
1. the measuring device of a stereotactic radiotherapy, comprise skin, internal layer, cylindrical multi-functional plug-in unit and foundation ring, it is characterized in that, described skin and internal layer are screwed the main body that forms described measuring device on foundation ring, reserving gaps is in order to insert film between skin and the internal layer, the nearly foundation ring end of internal layer center is reserved the cylindricality circular hole and is placed cylindrical multi-functional plug-in unit, described cylindrical multi-functional plug-in unit is to insert the cylinder that film forms in the middle of two semicolumns, or reserve the cylinder that the cylindricality circular hole is placed the adaptive rod of ionization chamber at nearly foundation ring end, or reserve the cylinder that the cylindricality circular hole is placed the cylindrical adaptive rod that has embedded gold or tungsten ball at nearly foundation ring end.
2. measuring device according to claim 1 is characterized in that, different according to the stereotactic radiotherapy position, the foundation ring end far away of described skin and internal layer is made different outward appearances: for head stereoscopic Stereotactic radiotherapy system, described device is made the spherical crown cylindricality; For body stereotactic radiotherapy system, described device is made cylinder or like cylinder.
3. measuring device according to claim 1 is characterized in that, has the hole in described skin and the internal layer and places ionization chamber, thermoluminescence, gold or tungsten ball.
4. measuring device according to claim 1 is characterized in that, places thermoluminescence in the described multi-functional plug-in unit.
5. measuring device according to claim 1 is characterized in that, described internal layer be connected multi-functional plug-in unit and make movable pluggable connection, or make fixing non-removable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010514424 CN101947362B (en) | 2010-10-21 | 2010-10-21 | Multifunctional measurement device for stereotactic radiotherapy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010514424 CN101947362B (en) | 2010-10-21 | 2010-10-21 | Multifunctional measurement device for stereotactic radiotherapy |
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| CN101947362A CN101947362A (en) | 2011-01-19 |
| CN101947362B true CN101947362B (en) | 2013-01-16 |
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| CN 201010514424 Active CN101947362B (en) | 2010-10-21 | 2010-10-21 | Multifunctional measurement device for stereotactic radiotherapy |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102727239B (en) * | 2012-07-06 | 2014-01-08 | 中国科学院高能物理研究所 | Mammary gland die body with chest wall radiation dose measurement function |
| CN112402817A (en) * | 2020-11-14 | 2021-02-26 | 中国人民解放军空军军医大学 | Multifunctional quality control die body of radiotherapy equipment and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520899A (en) * | 2003-01-30 | 2004-08-18 | 武汉康桥医学新技术有限公司 | Directional intensity ajustable radiation therapy apparatus |
| CN201569746U (en) * | 2009-12-25 | 2010-09-01 | 深圳市海博科技有限公司 | Measuring die body |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520899A (en) * | 2003-01-30 | 2004-08-18 | 武汉康桥医学新技术有限公司 | Directional intensity ajustable radiation therapy apparatus |
| CN201569746U (en) * | 2009-12-25 | 2010-09-01 | 深圳市海博科技有限公司 | Measuring die body |
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| CN101947362A (en) | 2011-01-19 |
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Application publication date: 20110119 Assignee: Wuhan digital cutter medical treatment company limited Assignor: Dai Jianrong|Xu Yingjie Contract record no.: 2015440020318 Denomination of invention: Multifunctional measurement device for stereotactic radiotherapy Granted publication date: 20130116 License type: Common License Record date: 20150902 |
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