JPH0576613A - Radiation therapy device and its radiation field adjustment jig - Google Patents
Radiation therapy device and its radiation field adjustment jigInfo
- Publication number
- JPH0576613A JPH0576613A JP3237587A JP23758791A JPH0576613A JP H0576613 A JPH0576613 A JP H0576613A JP 3237587 A JP3237587 A JP 3237587A JP 23758791 A JP23758791 A JP 23758791A JP H0576613 A JPH0576613 A JP H0576613A
- Authority
- JP
- Japan
- Prior art keywords
- radiation
- light
- irradiation field
- light source
- collimator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Radiation-Therapy Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は放射線治療装置及びその
照射野調整治具に関し、特に放射線治療装置における照
射野の決定について光源位置を移動して調整する放射線
治療装置及びその照射野調整治具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiotherapy apparatus and its irradiation field adjusting jig, and more particularly to a radiotherapy apparatus for adjusting the irradiation field in the radiotherapy apparatus by moving the light source position and the irradiation field adjusting jig thereof. Regarding
【０００２】[0002]
【従来の技術】放射線治療装置においては、放射線照射
野を定めるために、照射ヘッド内に内蔵された光源から
光を照射し、この光照射野を基準にして放射線照射野を
決定している。この場合、放射線照射野は光照射野に一
致していなければならないため、放射線発生源と光照射
野の光源位置とは仮想的に一致していなければならな
い。2. Description of the Related Art In a radiation treatment apparatus, in order to determine a radiation irradiation field, light is emitted from a light source incorporated in an irradiation head, and the radiation irradiation field is determined on the basis of this light irradiation field. In this case, since the radiation irradiation field must match the light irradiation field, the radiation generation source and the light source position of the light irradiation field must virtually match.
【０００３】従来、光照射野の光源位置の調整は、図３
に示すように照射ヘッド１の回転中心軸２に対しコリメ
ータ３を対称に開き、光照射野光源４から反射鏡５によ
って反射された光が、コリメータ３によって遮ぎられた
光の辺縁が照射ヘッド１を回転中心軸２の回りに１８０
°回転させた時一致するよう光照射野光源４の位置を調
整していた。例えば、光照射野光源４の位値が回転中心
軸２上にある放射線発生源６の位置と仮想的に一致して
いる場合は、照射ヘッド１を１８０°回転させてもコリ
メータ３によって遮ぎられる光の辺縁７は完全に一致す
る。しかしながら、光照射野光源４の位置が、回転中心
軸２上に無い場合は照射ヘッド１を１８０°回転させる
と、光源が照射ヘッド１に内蔵されているため、光照射
野光源４の仮想光源は６ａ〜６ｂに移りコリメータ３に
よって遮ぎられる光の辺縁の位置は７ａ〜７ｂとなり一
致しない。Conventionally, the adjustment of the light source position of the light irradiation field has been performed by using FIG.
As shown in, the collimator 3 is opened symmetrically with respect to the rotation center axis 2 of the irradiation head 1, and the light reflected by the reflecting mirror 5 from the light irradiation field light source 4 irradiates the edge of the light blocked by the collimator 3. 180 around the rotation center axis 2
The position of the light field light source 4 was adjusted so that they would coincide when rotated. For example, when the position of the light field light source 4 virtually coincides with the position of the radiation generation source 6 on the rotation center axis 2, even if the irradiation head 1 is rotated 180 °, it is blocked by the collimator 3. The edges 7 of the emitted light are perfectly matched. However, when the position of the light irradiation field light source 4 is not on the rotation center axis 2, when the irradiation head 1 is rotated by 180 °, the light source is built in the irradiation head 1, and thus the virtual light source of the light irradiation field light source 4 is used. Moves to 6a to 6b and the positions of the edges of the light blocked by the collimator 3 are 7a to 7b, which do not match.
【０００４】[0004]
【発明が解決しようとする課題】この従来の調整法は、
コリメータ３によって遮ぎられる光の辺縁の一致を見る
ため、コリメータ３を照射ヘッド１の回転中心転２に対
し対称に開く必要があり、特に非対称駆動可能なコリメ
ータの場合正確に対称に開くことは困難であり、光照射
野の光源位置の調整が困難であった。This conventional adjustment method is
It is necessary to open the collimator 3 symmetrically with respect to the rotation center rotation 2 of the irradiation head 1 in order to see the coincidence of the edges of the light blocked by the collimator 3. Especially, in the case of a collimator capable of asymmetrical driving, the collimator 3 must be opened exactly symmetrically. It was difficult to adjust the position of the light source in the light irradiation field.
【０００５】[0005]
【課題を解決するための手段】本発明の第一の発明の放
射線治療装置は、線源から放射された放射線の照射野を
コリメータで形成する放射線治療装置において、台座と
前記台座に取り付けられた支持部と前記支持部の上部に
取り付けられた矩形板から成る照射野調整治具を備えて
構成される。A radiotherapy apparatus according to the first invention of the present invention is a radiotherapy apparatus for forming an irradiation field of radiation emitted from a radiation source by a collimator, the pedestal being attached to the pedestal. An irradiation field adjusting jig composed of a support portion and a rectangular plate attached to the upper portion of the support portion is provided.
【０００６】本発明の第二の発明は、台座と前記台座に
取付けられた支持部と前記支持部の上部に取付けられた
矩形板とを備えて構成される。A second aspect of the present invention comprises a pedestal, a support portion attached to the pedestal, and a rectangular plate attached to the upper portion of the support portion.
【０００７】[0007]
【実施例】次に、本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００８】図２は本発明の照射野調整治具の一実施例
の構造を示す外観図である。台座１０に取り付けられた
支持部１１の上部に矩形板１２が取り付けられている。FIG. 2 is an external view showing the structure of an embodiment of the irradiation field adjusting jig of the present invention. The rectangular plate 12 is attached to the upper portion of the support portion 11 attached to the pedestal 10.
【０００９】図１は本発明の照射野調整治具を用いて放
射線治療装置の光照射野を調整する場合の概念図であ
る。照射野調整治具９は照射ヘッド１の下部の適当な位
置に置かれる。コリメータ３は、照射野調整治具９の矩
形板１２によって遮ぎられる照射野より大きく開いてお
く。照射野光源４の位置が回転中心軸２上にある放射線
発生源６の位置と仮想的に一致している場合は、照射ヘ
ッド１を回転中心軸２の回りに１８０°回転させても、
矩形板１２によって遮ぎられる光の辺縁８の位置は完全
に一致する。照射野光源４の位置が回転中心軸２上に無
い場合は、照射ヘッド１を回転中心軸２の回りに１８０
°回転させると、光源が照射ヘッド１に内蔵されている
ため、光照射野光源４の仮想光源は６ａ〜６ｂに移り、
矩形板１２によって遮ぎられる光の辺縁の位置は８ａ〜
８ｂに移り一致しない。このようにして、照射ヘッド１
を回転中心軸の回りに１８０°回転させ、光照射野調整
装置９の矩形板１２によって遮ぎられる光の辺縁が一致
するよう、光照射野光源４の位置を調整する。又、光照
射野調整装置９は、照射ヘッド１とは独立して固定され
ているため、置く位置は矩形板１２によってできる光照
射野がコリメータ３によって得られる光照射野内に入っ
ていれば適当な位置でよい。さらに、コリメータ３の開
度も適当でよい。FIG. 1 is a conceptual diagram in the case of adjusting the light irradiation field of a radiotherapy apparatus using the irradiation field adjusting jig of the present invention. The irradiation field adjusting jig 9 is placed at an appropriate position below the irradiation head 1. The collimator 3 is opened larger than the irradiation field blocked by the rectangular plate 12 of the irradiation field adjusting jig 9. When the position of the irradiation field light source 4 virtually coincides with the position of the radiation generation source 6 on the rotation center axis 2, even if the irradiation head 1 is rotated by 180 ° around the rotation center axis 2,
The positions of the edges 8 of the light shielded by the rectangular plate 12 are completely coincident with each other. When the position of the irradiation field light source 4 is not on the rotation center axis 2, the irradiation head 1 is moved around the rotation center axis 2 by 180.
When rotated by °, since the light source is built in the irradiation head 1, the virtual light source of the light irradiation field light source 4 moves to 6a-6b,
The position of the edge of the light blocked by the rectangular plate 12 is 8a-
Move to 8b and do not match. In this way, the irradiation head 1
Is rotated about the central axis of rotation by 180 °, and the position of the light irradiation field light source 4 is adjusted so that the edges of the light blocked by the rectangular plate 12 of the light irradiation field adjusting device 9 match. Further, since the light irradiation field adjusting device 9 is fixed independently of the irradiation head 1, it is appropriate to place the light irradiation field adjusting device 9 if the light irradiation field formed by the rectangular plate 12 is within the light irradiation field obtained by the collimator 3. Any position is fine. Further, the opening degree of the collimator 3 may be appropriate.
【００１０】[0010]
【発明の効果】以上説明したように本発明は、照射野光
源を含む照射ヘッドとは独立した光照射野調整装置を用
いることにより、コリメータの開度に無関係に光照射野
光源の位置を調整できるという効果がある。As described above, according to the present invention, the position of the light irradiation field light source is adjusted regardless of the opening of the collimator by using the light irradiation field adjusting device independent of the irradiation head including the irradiation field light source. There is an effect that you can.
【図１】本実施例の使用時の状況を示す説明図FIG. 1 is an explanatory view showing a situation when using this embodiment.
【図２】本発明の一実施例の構造を示す外観図FIG. 2 is an external view showing the structure of an embodiment of the present invention.
【図３】従来の方法による光照射野光源の調整法を示す
説明図FIG. 3 is an explanatory diagram showing a method for adjusting a light field light source by a conventional method.
１ 照射ヘッド ２ 回転中心軸 ３ コリメータ ４ 光照射野光源 ５ 反射鏡 ６ 放射線発生源 ７ 光の辺縁 ８ 光の辺縁 ９ 照射野調整装置 １０ 台座 １１ 支持部 １２ 矩形板 1 irradiation head 2 rotation center axis 3 collimator 4 light irradiation field light source 5 reflecting mirror 6 radiation source 7 light edge 8 light edge 9 irradiation field adjusting device 10 pedestal 11 support 12 rectangular plate
Claims (2)
リメータで形成する放射線治療装置において、台座と前
記台座に取り付けられた支持部と前記支持部の上部に取
り付けられた矩形板から成る照射野調整治具を備えて成
ることを特徴とする放射線治療装置。1. A radiation treatment apparatus for forming an irradiation field of radiation emitted from a radiation source with a collimator, comprising: a pedestal, a support attached to the pedestal, and a rectangular plate attached to an upper portion of the support. A radiotherapy device comprising a field adjusting jig.
前記支持部の上部に取付けられた矩形板とを備えて成る
ことを特徴とする放射線治療装置の照射野調整治具。2. An irradiation field adjusting jig for a radiotherapy apparatus, comprising: a pedestal, a support portion attached to the pedestal, and a rectangular plate attached to an upper portion of the support portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3237587A JPH0576613A (en) | 1991-09-18 | 1991-09-18 | Radiation therapy device and its radiation field adjustment jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3237587A JPH0576613A (en) | 1991-09-18 | 1991-09-18 | Radiation therapy device and its radiation field adjustment jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0576613A true JPH0576613A (en) | 1993-03-30 |
Family
ID=17017534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3237587A Pending JPH0576613A (en) | 1991-09-18 | 1991-09-18 | Radiation therapy device and its radiation field adjustment jig |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0576613A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5739547A (en) * | 1995-01-20 | 1998-04-14 | Sharp Kabushiki Kaisha | Reflection type display |
| CN103550870A (en) * | 2013-10-23 | 2014-02-05 | 沈阳东软医疗系统有限公司 | Simulative light source assembly of medical electron linear accelerator |
| WO2020133057A1 (en) * | 2018-12-27 | 2020-07-02 | 深圳市奥沃医学新技术发展有限公司 | Simulated light source adjustment apparatus, analog light source device, and radiation therapy device |
-
1991
- 1991-09-18 JP JP3237587A patent/JPH0576613A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5739547A (en) * | 1995-01-20 | 1998-04-14 | Sharp Kabushiki Kaisha | Reflection type display |
| CN103550870A (en) * | 2013-10-23 | 2014-02-05 | 沈阳东软医疗系统有限公司 | Simulative light source assembly of medical electron linear accelerator |
| CN103550870B (en) * | 2013-10-23 | 2016-04-27 | 沈阳东软医疗系统有限公司 | A kind of analog light source assembly of medical electronic linear accelerator |
| WO2020133057A1 (en) * | 2018-12-27 | 2020-07-02 | 深圳市奥沃医学新技术发展有限公司 | Simulated light source adjustment apparatus, analog light source device, and radiation therapy device |
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