CN2445754Y - Multi-vane grating diaphragm for tumor radiotherapy - Google Patents
Multi-vane grating diaphragm for tumor radiotherapy Download PDFInfo
- Publication number
- CN2445754Y CN2445754Y CN 00210255 CN00210255U CN2445754Y CN 2445754 Y CN2445754 Y CN 2445754Y CN 00210255 CN00210255 CN 00210255 CN 00210255 U CN00210255 U CN 00210255U CN 2445754 Y CN2445754 Y CN 2445754Y
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- optical grating
- vane
- leaf optical
- blade
- layer
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- 238000001959 radiotherapy Methods 0.000 title claims abstract description 11
- 206010028980 Neoplasm Diseases 0.000 title claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001225 therapeutic effect Effects 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Radiation-Therapy Devices (AREA)
Abstract
The utility model discloses a multi-vane optical grating used for tumor radiotherapies, wherein, a multi-vane optical grating of which is of double layers; the planes of the upper and the lower ends of an upper and a lower layers of vanes are all perpendicular to the connecting line of a light source, a therapeutic central point, etc.; the central point of each layer of the multi-vane optical grating is all positioned on the connecting line; the cross-sectional shape of each vane is a side trapezoid; the upper and the lower bottom edges of the side trapezoid are parallel, and respectively form the upper and the lower end faces of the layer of the optical grating; the straight lines of two planes provided with two side edges of the side trapezoid pass through the light source point; the straight lines are extended for intersection. The utility model can effectively eliminate penetrating half images in multi-vane optical grating radiotherapies to cause edge dose distribution to further obtain improvements for increasing the overall effects of the dose distribution.
Description
This utility model relates to the tumour radiotherapy field, is specifically related to be used to implement the strong radiocurable multi-leaf optical grating of three-dimensional suitable-shape regulating.
Multi-leaf optical grating has obtained application at home and abroad as implementing the conformal intensity modulated radiocurable visual plant of tumour 3 D.Compare with traditional radiation therapy technology, use the three-dimensional conformal Intensity Modulation Radiated Therapy (IMRT) of multi-leaf optical grating when effectively killing tumor, to protect normal surrounding tissue to greatest extent, effectively improve the treatment ratio of gains.Multi-leaf optical grating is made up of blade many, the heavy metal material manufacturing of each blade, and the heavy metal material that is adopted should be able to produce stronger barrier effect to lonizing radiation.When multi-leaf optical grating was in closure state, it can effectively stop lonizing radiation to pass through, and down, the lonizing radiation of outgoing can be limited in certain scope in working order.In existing application, the shape of multi-leaf optical grating blade generally adopts the square-section design, in order to reduce the radiation leakage that interlobate slit causes, also have and adopt the convex concave Cross section Design, no matter but be the blade of square-section or the blade in convex concave cross section, in treatment, all exist the edgewise penumbra that penetrates.And, in any case this blade shape designs, all can't eliminate the penumbra that penetrates of end face.
The purpose of this utility model promptly provides a kind of penumbra problem that penetrates of eliminating blade in the multi-leaf optical grating, and makes the dose distribution top edge be used for the multi-leaf optical grating of tumour radiotherapy more clearly.
For realizing this purpose, the technical solution of the utility model is as follows: a kind of multi-leaf optical grating that is used for tumour radiotherapy, it is characterized in that: multi-leaf optical grating is for double-deck, the upper and lower side plane of two-layer blade is all perpendicular to the line of light source with the treatment isocenter point up and down, the central point of every layer of multi-leaf optical grating all is positioned on this line, the cross sectional shape of each blade is that side is trapezoidal, the trapezoid bottom of going up of side is parallel, constitute the upper and lower end face of this layer multi-leaf optical grating respectively, the straight line that two planar prolongations at trapezoid two the side places of side are intersected is crossed light source point.
After adopting technique scheme, multi-leaf optical grating is double-deck double focusing formula in this utility model, can eliminate the penumbra that penetrates in the multi-leaf optical grating radiotherapy effectively, the edge dose distribution is further improved, thereby further improved the general effect of dose distribution, in tumour radiotherapy, use double-deck double focusing formula multi-leaf optical grating technology, both can realize the scan-type treatment, also can realize the layering treatment, no matter adopt which kind of therapeutic modality, this technology can both be eliminated the dosage overlay region effectively, thereby avoids owing to shine and cross the phenomenon generation of irradiation effectively.
Below in conjunction with drawings and Examples this utility model is described in detail:
Fig. 1 is the general illustration of multi-leaf optical grating in this utility model.
Fig. 2 is that the X of multi-leaf optical grating in this utility model is to sketch map.
Fig. 3 is that the Y of multi-leaf optical grating in this utility model is to sketch map.
As shown in Figure 1, this utility model adopts double-deck double focusing formula multi-leaf optical grating, its multi-leaf optical grating is the twi-tier blade mode, up and down the upper and lower side plane of two-layer blade all perpendicular to light source with the treatment isocenter point line, the central point of two-layer multi-leaf optical grating also is positioned on this line up and down; The cross sectional shape of each blade all adopts the side trapezium structure, the trapezoid bottom of going up of side is parallel, constitute the upper and lower end face of this layer multi-leaf optical grating respectively, the trapezoid height of side is the worn-out thickness of screen of this layer blade, and the straight line that two planar prolongations at trapezoid two the side places of side are intersected is crossed light source point.All there is an independent driving mechanisms back of each blade of multi-leaf optical grating, can be by the advance and retreat of each blade of instruction control.The form of driving mechanism can be varied, provided the mode that adopts linear electric motors to drive in the drawings.
In Fig. 1, Fig. 2, Fig. 3,1 is radiographic source, 2 be Y to multi-leaf optical grating, 3 is blade driving motor, 4 be X to multi-leaf optical grating, 5 for waiting central plane launched field, 6 for waiting central plane, arrow is depicted as the blade movement direction.As shown in the figure, by adopting blade shape of the present utility model, can eliminate on perpendicular to the direction of blade movement and penetrate penumbra; Because of blade is double-deck, the orientation of two-layer blade is vertical (also can get other angles) up and down, thereby can eliminate penumbra on X and Y both direction, reaches double focusing again.
Claims (1)
1, a kind of multi-leaf optical grating that is used for tumour radiotherapy, it is characterized in that: multi-leaf optical grating is for double-deck, the upper and lower side plane of two-layer blade is all perpendicular to the line of light source with the treatment isocenter point up and down, the central point of every layer of multi-leaf optical grating all is positioned on this line, the cross sectional shape of each blade is that side is trapezoidal, the trapezoid bottom of going up of side is parallel, constitutes the upper and lower end face of this layer multi-leaf optical grating respectively, and the straight line that two planar prolongations at trapezoid two the side places of side are intersected is crossed light source point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00210255 CN2445754Y (en) | 2000-09-07 | 2000-09-07 | Multi-vane grating diaphragm for tumor radiotherapy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00210255 CN2445754Y (en) | 2000-09-07 | 2000-09-07 | Multi-vane grating diaphragm for tumor radiotherapy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2445754Y true CN2445754Y (en) | 2001-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00210255 Expired - Lifetime CN2445754Y (en) | 2000-09-07 | 2000-09-07 | Multi-vane grating diaphragm for tumor radiotherapy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2445754Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421630C (en) * | 2006-05-17 | 2008-10-01 | 珠海和佳医疗设备股份有限公司 | Grating system for radiotherapy and adjusting method thereof |
| CN100464803C (en) * | 2003-12-17 | 2009-03-04 | 深圳市益普生医疗设备发展有限公司 | Automatic multi-portals grating |
| CN103127616A (en) * | 2011-11-22 | 2013-06-05 | 苏州雷泰医疗科技有限公司 | Radiotherapy equipment grating |
| CN104835547A (en) * | 2014-02-11 | 2015-08-12 | 上海联影医疗科技有限公司 | Multi-blade collimator |
| EP2962309A4 (en) * | 2013-02-26 | 2016-10-19 | Accuray Inc | Electromagnetically actuated multi-leaf collimator |
| CN107149727A (en) * | 2017-07-03 | 2017-09-12 | 上海联影医疗科技有限公司 | Multi-leaf optical grating |
| CN108031015A (en) * | 2017-12-19 | 2018-05-15 | 连卫东 | A kind of multilayer multi-blade collimator |
| CN110170109A (en) * | 2018-12-21 | 2019-08-27 | 苏州雷泰医疗科技有限公司 | The orthogonal double-deck grating device and its Ziye for radiotherapy apparatus divide control method |
| CN111053977A (en) * | 2019-12-20 | 2020-04-24 | 上海联影医疗科技有限公司 | Multi-leaf collimator and radiotherapy device |
| CN111408065A (en) * | 2020-03-18 | 2020-07-14 | 上海联影医疗科技有限公司 | Multi-leaf collimator, double-layer multi-leaf collimator and medical equipment |
| CN112035778A (en) * | 2020-09-01 | 2020-12-04 | 苏州雷泰医疗科技有限公司 | Multi-leaf grating side-penetrating penumbra calculation method and device |
-
2000
- 2000-09-07 CN CN 00210255 patent/CN2445754Y/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464803C (en) * | 2003-12-17 | 2009-03-04 | 深圳市益普生医疗设备发展有限公司 | Automatic multi-portals grating |
| CN100421630C (en) * | 2006-05-17 | 2008-10-01 | 珠海和佳医疗设备股份有限公司 | Grating system for radiotherapy and adjusting method thereof |
| CN103127616A (en) * | 2011-11-22 | 2013-06-05 | 苏州雷泰医疗科技有限公司 | Radiotherapy equipment grating |
| CN103127616B (en) * | 2011-11-22 | 2015-08-26 | 苏州雷泰医疗科技有限公司 | Radiotherapy equipment grating |
| EP2962309A4 (en) * | 2013-02-26 | 2016-10-19 | Accuray Inc | Electromagnetically actuated multi-leaf collimator |
| CN104835547A (en) * | 2014-02-11 | 2015-08-12 | 上海联影医疗科技有限公司 | Multi-blade collimator |
| CN104835547B (en) * | 2014-02-11 | 2019-11-19 | 上海联影医疗科技有限公司 | Multi-diaphragm collimator |
| CN107149727A (en) * | 2017-07-03 | 2017-09-12 | 上海联影医疗科技有限公司 | Multi-leaf optical grating |
| CN107149727B (en) * | 2017-07-03 | 2019-12-13 | 上海联影医疗科技有限公司 | Multi-blade grating |
| CN108031015B (en) * | 2017-12-19 | 2020-12-08 | 连卫东 | Multi-layer multi-blade collimator |
| CN108031015A (en) * | 2017-12-19 | 2018-05-15 | 连卫东 | A kind of multilayer multi-blade collimator |
| CN110170109A (en) * | 2018-12-21 | 2019-08-27 | 苏州雷泰医疗科技有限公司 | The orthogonal double-deck grating device and its Ziye for radiotherapy apparatus divide control method |
| CN110170109B (en) * | 2018-12-21 | 2020-12-18 | 苏州雷泰医疗科技有限公司 | Orthogonal double-layer grating device for radiotherapy equipment and subfield segmentation control method thereof |
| CN111053977A (en) * | 2019-12-20 | 2020-04-24 | 上海联影医疗科技有限公司 | Multi-leaf collimator and radiotherapy device |
| CN111408065A (en) * | 2020-03-18 | 2020-07-14 | 上海联影医疗科技有限公司 | Multi-leaf collimator, double-layer multi-leaf collimator and medical equipment |
| CN111408065B (en) * | 2020-03-18 | 2022-07-26 | 上海联影医疗科技股份有限公司 | Multi-leaf collimator, double-layer multi-leaf collimator and medical equipment |
| CN112035778A (en) * | 2020-09-01 | 2020-12-04 | 苏州雷泰医疗科技有限公司 | Multi-leaf grating side-penetrating penumbra calculation method and device |
| CN112035778B (en) * | 2020-09-01 | 2023-10-20 | 苏州雷泰医疗科技有限公司 | Multi-leaf grating side surface penetrating penumbra calculation method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Patentee address after: Dalian high tech park, 116025 Liaoning province Qixianling XinDa Street No. 51 Patentee address before: 116021 No. 4, Chun Ying Street, Shahekou District, Liaoning, Dalian |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20100907 Granted publication date: 20010905 |