CN2824991Y - High-resolution multi-blade grating for tumor radiotherapy - Google Patents
High-resolution multi-blade grating for tumor radiotherapy Download PDFInfo
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- CN2824991Y CN2824991Y CN 200520035699 CN200520035699U CN2824991Y CN 2824991 Y CN2824991 Y CN 2824991Y CN 200520035699 CN200520035699 CN 200520035699 CN 200520035699 U CN200520035699 U CN 200520035699U CN 2824991 Y CN2824991 Y CN 2824991Y
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Abstract
The utility model relates to a high-resolution multi-blade grating for tumor radiotherapy, which belongs to the tumor therapy equipment. The high-resolution multi-blade grating for tumor radiotherapy comprises a left blade assembly and a right blade assembly which are arranged on the same plane and are symmetrical left and right, wherein blades of each blade assembly are arranged in an up and down symmetrical mode by a center line; each blade is correspondingly provided with a driving mechanism and a control device; the right blade assembly is composed of a middle segment, two adjacent gap segments, two minor adjacent gap segments, two outer gap segments, etc., wherein the two adjacent gap segments, the two minor adjacent gap segments and the two outer gap segments are arranged on both sides of the middle segment; each segment is composed of a plurality of blades of which the thickness is identical. The thickness of the blades of the middle segment is smaller than the thickness of the blades of the adjacent gap segments; the thickness of the blades of the adjacent gap segments is smaller than the thickness of the blades of the minor adjacent gap segments; the thickness of the blades of the outer gap segments is smaller than the thickness of the blades of the minor adjacent gap segments or the adjacent gap segments. The utility model has the characteristic of high radioactive field resolution. The utility model can effectively kill tumor cells and protect normal tissues around a tumor in maximum extent.
Description
One, technical field
This utility model relates to tumour radiotherapy equipment, is the multi-leaf optical grating that is used to implement three-dimensional conformal Intensity Modulation Radiated Therapy (IMRT) tumor specifically.
Two, background technology
Electric multiblade optical grating at home and abroad is applied as the visual plant that is used for three-dimensional conformal Intensity Modulation Radiated Therapy (IMRT) tumor.Multi-leaf optical grating is made of symmetrical left and right vane group, and blade adopts the heavy metal material manufacturing that can produce strong barrier effect to lonizing radiation.When multi-leaf optical grating is in closure state, it can stop lonizing radiation to pass through effectively, in working order down, the lonizing radiation of outgoing can be limited in certain scope, i.e. motion by blade in the multi-leaf optical grating realizes the dynamic wedge shape open country that radiotherapy is used, and, reach the radiation dose distribution of any requirement by controlling blade in each locational time of staying.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 the peripheral normal structure of tumor to greatest extent, effectively improve the treatment ratio of gains.That american documentation literature discloses is a kind of " radiotherapy with use gratings " more and (U.S. Patent number 5889834, " blade collimatorfor radiation therapy; " March 30 1999 applying date), this multi-leaf optical grating is made of symmetric left and right vane group, and each vane group has 26 blades; Each vane group is again by interlude and be positioned between the neighbour of interlude both sides section, outer room section etc. and form for 5 sections, form by the identical blade of a plurality of thickness for every section, its vane thickness be from the lining outwards (and interlude is to both sides) increasing.The problem that its ad hoc structure caused is: one; the thickness of outermost layer in the left and right vane group (being the outer room section) blade is maximum relatively; this makes to the resolving accuracy reduction at the upper and lower edge in wild zone, thereby the effectiveness of tumor is killed in influence, can not protect the normal structure at this position effectively.Its two because whole blade number less relatively (left and right vane group has 20-32 blade respectively, is preferably 26 blades), the resolving accuracy of device is lower, thus can cause irradiation and accidentally injure normal structure or owe according to and make the reduction of tumor killing rate.
Three, utility model content
The purpose of this utility model provides the multi-leaf optical grating that a kind of tumour radiotherapy is used, to improve the resolving accuracy to coverage field.This novel purpose is achieved in that the multi-leaf optical grating that a kind of tumour radiotherapy is used, comprise at grade and installing, a symmetrical left side, right vane group, and the blade in each vane group is pressed last with center line again, following symmetric mode setting, each blade correspondence is provided with a driving mechanism, control device, it is characterized in that, described right vane group is by interlude and be positioned at section between two neighbours of interlude both sides, section between twice neighbour, seven sections formations such as two outer room sections, form by the identical a plurality of blades of thickness for every section, and the interlude vane thickness is less than the thickness of section blade between the neighbour, between the neighbour section blade thickness less than between inferior neighbour the section blade thickness, the thickness of outer room section blade less than between inferior neighbour the section or the neighbour between the section blade thickness.
The blade of described interlude is 10, and vane thickness is 1.85mm; Totally 12 in the blade of section between two neighbours, the thickness of blade is 2.46mm; Totally 28 in the blade of section between twice neighbour, vane thickness is 3.08mm; Totally 4 in the blade of two outer room sections, vane thickness is 2.77mm.
The blade of described interlude is 10, and vane thickness is 1.85mm; Totally 12 in the blade of section between two neighbours, the thickness of blade is 2.46mm; Totally 28 in the blade of section between twice neighbour, vane thickness is 3.08mm; Totally 4 in the blade of two outer room sections, vane thickness is 2.46mm.
Described interlude blade is 10, and thickness is 1.85mm; The section blade is totally 12 between two neighbours, and vane thickness is 2.46mm; The section blade is totally 24 between twice neighbour, and vane thickness is 3.08mm; Totally 8 in two outer room section blades, vane thickness is 1.85mm.
Technique scheme is compared with prior art (USpatent 5889834), and this is novel to have following characteristics and advantage:
1, the number of this novel left and right vane group is 54; and prior art is only in 32; known from institute; the blade number of multiple-blade grating is many more, and its launched field resolution is high more, and the coverage field resolution of device is higher; the qualification of launched field peripheral profile is more accurate; the qualification on launched field border is approached the profile boundary of tumor body itself more, thereby to the more accurate and effective of killing of tumor, and protect the normal structure of tumor periphery to greatest extent.
2, in the prior art, the vane thickness maximum owing to corresponding to the upper and lower edge of launched field makes the differentiation of launched field on y direction (being as the criterion with projective plane) more extensive, loses accuracy; And this novel in, the vane thickness at this position dwindles, between comparable neighbour of its vane thickness of ordinary circumstance the section or the neighbour between the section vane thickness little.Therefore, the resolution at this novel upper and lower edge to launched field is higher relatively, promptly in more refinement and precisely of the differentiation of launched field profile on the y direction.Like this, help the raising of whole device resolution.
Four, description of drawings
Accompanying drawing is the sketch map of this novel embodiment.
Five, the specific embodiment
In the accompanying drawing, this is novel by left and right vane group (being installed in same plane, left-right symmetric), and the blade in each vane group is pressed upper and lower symmetric mode setting with center line again.Vane drive mechanism (each blade is provided with one), compositions such as control device.As, right vane group is by interlude and be positioned at section 2,2a between the neighbour of its both sides, section 3,3a between inferior neighbour, seven sections formations such as outer room section 4,4a, form by the identical a plurality of leaves of thickness for every section, and the interlude vane thickness is less than section vane thickness between the neighbour, and the section vane thickness is less than section vane thickness between inferior neighbour between the neighbour, and outer room section vane thickness is less than section vane thickness between inferior neighbour or less than section vane thickness between the neighbour.
Embodiment 1
The blade of described interlude is 10, and vane thickness is 1.85mm; The blade of section is respectively 6, totally 12 between two neighbours, and the thickness of blade is 2.46mm; The blade of section is respectively 14, totally 28 between twice neighbour, and vane thickness is 3.08mm; The blade of two outer room sections is respectively 2, totally 4, and vane thickness is 2.77mm.Each section blade at the thickness that waits the center is respectively: interlude 3mm; Section 4mm between the neighbour; Section 5mm between inferior neighbour; Outer room section 4.5mm.
The blade of described interlude is 10, and vane thickness is 1.85mm; Totally 12 in the blade of section between two neighbours, the thickness of blade is 2.46mm; Totally 28 in the blade of section between twice neighbour, vane thickness is 3.08mm; Totally 4 in the blade of two outer room sections, vane thickness is 2.46mm.Each section blade at the thickness that waits the center is respectively: interlude 3mm; Section 4mm between the neighbour; Section 5mm between inferior neighbour; Outer room section 4mm.
Described interlude blade is 10, and thickness is 1.85mm; The section blade is totally 12 between two neighbours, and vane thickness is 2.46mm; The section blade is totally 24 between twice neighbour, and vane thickness is 3.08mm; Totally 8 in two outer room section blades, vane thickness is 1.85mm.Each section blade at the thickness that waits the center is respectively: interlude 3mm; Section 4mm between the neighbour; Section 5mm between inferior neighbour; Outer room section 3mm.
Claims (4)
1, the high-resolution multi-leaf optical grating that a kind of tumour radiotherapy is used, comprise at grade and installing, a symmetrical left side, right vane group, and the blade in each vane group is pressed last with center line again, following symmetric mode setting, each blade correspondence is provided with a driving mechanism, control device, it is characterized in that, described right vane group is by interlude (1) and be positioned at section (2 between the neighbour of interlude both sides, 2a), section (3 between inferior neighbour, 3a), outer room section (4,4a) wait seven sections formations, form by the identical a plurality of blades of thickness for every section, and the interlude vane thickness is less than the thickness of section blade between the neighbour, between the neighbour section blade thickness less than between inferior neighbour the section blade thickness, the thickness of outer room section blade less than between inferior neighbour the section or the neighbour between the section blade thickness.
2, multi-leaf optical grating according to claim 1 is characterized in that, the blade of described interlude (1) is 10, and vane thickness is 1.85mm; Totally 12 in the blade of section (2,2a) between two neighbours, the thickness of blade is 2.46mm; Totally 28 in the blade of section between twice neighbour (3,3a), vane thickness is 3.08mm; Totally 4 in the blade of two outer room sections (4,4a), vane thickness is 2.77mm.
3, multi-leaf optical grating according to claim 1 is characterized in that, the blade of described interlude (1) is 10, and vane thickness is 1.85mm; Totally 12 in the blade of section (2,2a) between two neighbours, the thickness of blade is 2.46mm; Totally 28 in the blade of section between twice neighbour (3,3a), vane thickness is 3.08mm; Totally 4 in the blade of two outer room sections (4,4a), vane thickness is 2.46mm.
4, multi-leaf optical grating according to claim 1 is characterized in that, described interlude (1) blade is 10, and thickness is 1.85mm; Section (2,2a) blade is totally 12 between two neighbours, and vane thickness is 2.46mm; Section (3,3a) blade is totally 24 between twice neighbour, and vane thickness is 3.08mm; Totally 8 in two outer room sections (4,4a) blade, vane thickness is 1.85mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035699 CN2824991Y (en) | 2005-10-10 | 2005-10-10 | High-resolution multi-blade grating for tumor radiotherapy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035699 CN2824991Y (en) | 2005-10-10 | 2005-10-10 | High-resolution multi-blade grating for tumor radiotherapy |
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| CN2824991Y true CN2824991Y (en) | 2006-10-11 |
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| CN 200520035699 Expired - Lifetime CN2824991Y (en) | 2005-10-10 | 2005-10-10 | High-resolution multi-blade grating for tumor radiotherapy |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101548339B (en) * | 2006-12-04 | 2012-06-20 | 皇家飞利浦电子股份有限公司 | Beam filter, particularly for x-rays |
| CN102553079A (en) * | 2010-12-30 | 2012-07-11 | 苏州雷泰医疗科技有限公司 | Grating device for radiation therapy equipment |
| CN104700917A (en) * | 2013-12-05 | 2015-06-10 | 北京大基康明医疗设备有限公司 | Double-focusing multileaf collimator |
| CN109395258A (en) * | 2017-08-18 | 2019-03-01 | 盖炜 | Precise radiotherapy method and system based on sorghum procyanidins |
| 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 |
-
2005
- 2005-10-10 CN CN 200520035699 patent/CN2824991Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101548339B (en) * | 2006-12-04 | 2012-06-20 | 皇家飞利浦电子股份有限公司 | Beam filter, particularly for x-rays |
| CN102553079A (en) * | 2010-12-30 | 2012-07-11 | 苏州雷泰医疗科技有限公司 | Grating device for radiation therapy equipment |
| CN102553079B (en) * | 2010-12-30 | 2015-07-29 | 苏州雷泰医疗科技有限公司 | Grating device of radiotherapy equipment |
| CN104700917A (en) * | 2013-12-05 | 2015-06-10 | 北京大基康明医疗设备有限公司 | Double-focusing multileaf collimator |
| CN109395258A (en) * | 2017-08-18 | 2019-03-01 | 盖炜 | Precise radiotherapy method and system based on sorghum procyanidins |
| 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 |
| CN111053977B (en) * | 2019-12-20 | 2022-08-16 | 上海联影医疗科技股份有限公司 | Multi-leaf collimator and radiotherapy device |
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Granted publication date: 20061011 |
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| EXPY | Termination of patent right or utility model |