JPS6121109B2 - - Google Patents
Info
- Publication number
- JPS6121109B2 JPS6121109B2 JP15274779A JP15274779A JPS6121109B2 JP S6121109 B2 JPS6121109 B2 JP S6121109B2 JP 15274779 A JP15274779 A JP 15274779A JP 15274779 A JP15274779 A JP 15274779A JP S6121109 B2 JPS6121109 B2 JP S6121109B2
- Authority
- JP
- Japan
- Prior art keywords
- treatment
- floor
- rotation
- axis
- center axis
- 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.)
- Expired
Links
- 230000005855 radiation Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 13
- 239000002245 particle Substances 0.000 description 10
- 230000001133 acceleration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Landscapes
- Radiation-Therapy Devices (AREA)
Description
【発明の詳細な説明】
この発明は回転照射治療装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating irradiation treatment device.
一般に、放射線を患部に照射し悪性腫よう部組
織を破壊する治療法においては、人体の健全部組
織の放射線被爆を低減させるため放射線源を患部
を中心に回転させながら照射する方法が採られて
いる。放射線源が小さい場合、患部すなわち人体
の回りに線源を移動させることは特に問題はない
が、放射線として粒子線を使用する場合には、線
源が粒子加速器となり大型化するのでこのような
加速器を人体の回りに移動させることは困難であ
る。したがつて、従来においては粒子線を照射回
転軸方向に入射し偏向マグネツトにより一旦外方
向に曲げた後さらに照射回転軸上の患部方向に曲
げて照射を行なう方法が用いられている。 Generally, in treatment methods that destroy malignant tumor tissue by irradiating the affected area with radiation, a method is adopted in which the radiation source is irradiated while rotating around the affected area in order to reduce the radiation exposure of healthy tissue in the human body. There is. If the radiation source is small, there is no particular problem in moving the source around the affected area, that is, around the human body, but when using particle beams as radiation, the source becomes a particle accelerator and becomes larger, so such an accelerator is not required. is difficult to move around the human body. Therefore, in the past, a method has been used in which a particle beam is incident in the direction of the irradiation rotation axis, once bent outward by a deflection magnet, and then further bent toward the affected area on the irradiation rotation axis for irradiation.
第１図に示すのはこのような従来の照射装置の
一例であり、中性子線を回転照射する例を示すも
のである。図において１は患部２を有する患者で
ベツド３上に横たえられ、患部２（治療位置）が
照射装置の回転中心軸Ｌ上に位置するようにされ
ている。図示されていない粒子加速器で加速され
た荷電粒子（この場合は重水素原子核）は中心軸
Ｌ上に配された真空ダクト４の中を通り、真空ダ
クト４の回転継手５を経て第一偏向電磁石６に入
る。この偏向電磁石６では荷電粒子は電磁石の磁
場で曲げられ真空ダクト７に導かれ、さらに第二
偏向電磁石８で曲げられベリリウムのターゲツト
９に当てられる。この際、核反応Be（ｄ、ｎ）
Ｂにより中性子が発生する。この中性子はターゲ
ツト９を囲んでいる鉄およびコンクリート製のシ
ールド１０の空隙部を通つて患者の患部２に照射
される。第一偏向電磁石６からシールド１０まで
の部材はフレーム１１に固定され一体となつてい
る。このフレーム１１は床面に固定されたブラケ
ツト１２に軸受１３によつて回転自在に支持さ
れ、駆動源１４により歯車１５，１６を介して中
心軸Ｌの回りを回転するようにされている。ま
た、このフレーム１１には回転の重心不釣合を補
正するためにカウンタバランス１７が取付けられ
ている。 FIG. 1 shows an example of such a conventional irradiation device, and shows an example of rotational irradiation of neutron beams. In the figure, a patient 1 having an affected area 2 is lying on a bed 3, and the affected area 2 (treatment position) is positioned on the rotation center axis L of the irradiation device. Charged particles (deuterium nuclei in this case) accelerated by a particle accelerator (not shown) pass through the vacuum duct 4 arranged on the central axis L, pass through the rotary joint 5 of the vacuum duct 4, and then pass through the first bending electromagnet. Enter 6. In this bending electromagnet 6, the charged particles are bent by the magnetic field of the electromagnet and guided into a vacuum duct 7, and further bent by a second bending electromagnet 8 so as to be applied to a beryllium target 9. At this time, the nuclear reaction Be (d, n)
B generates neutrons. These neutrons pass through a gap in a shield 10 made of iron and concrete surrounding the target 9, and are irradiated onto the affected area 2 of the patient. The members from the first bending electromagnet 6 to the shield 10 are fixed to the frame 11 and are integrated. The frame 11 is rotatably supported by a bearing 13 on a bracket 12 fixed to a floor surface, and is rotated around a central axis L by a drive source 14 via gears 15 and 16. Further, a counterbalance 17 is attached to the frame 11 in order to correct rotational center of gravity imbalance.
このような従来の照射装置において治療効果を
上げるため粒子線の加速エネルギを増加させると
次に述べるような種々の問題が生じる。 In such conventional irradiation devices, when the acceleration energy of the particle beam is increased in order to improve the therapeutic effect, various problems arise as described below.
装置の寸法・重量が著しく大きくなる。 The size and weight of the device become significantly larger.
例えば、磁場強さ20キロガウスの偏向電磁石
を使用した場合、20MeVのエネルギを有する
陽子線の曲げ半径は0.32ｍであるが300MeVの
陽子線では曲げ半径が1.35ｍとなり曲げ半径が
増大する。また、第二偏向電磁石８から患者１
までの間には、シールド装置もしくは粒子ビー
ムの収束およびその制御装置等のビーム光学系
機器を配置する必要があるので数メートルの距
離が必要となる。このように粒子線の加速エネ
ルギが増加すると照射装置の回転半径が大きく
なるとともに電磁石の重量も増加するのでそれ
に見合うカウンタバランスも加えると装置の寸
法・重量は著しく巨大となる。 For example, when a bending electromagnet with a magnetic field strength of 20 kilogauss is used, the bending radius of a proton beam with an energy of 20 MeV is 0.32 m, but with a proton beam of 300 MeV, the bending radius becomes 1.35 m, which increases the bending radius. Also, from the second bending electromagnet 8 to the patient 1
In between, it is necessary to arrange beam optical system equipment such as a shield device or a particle beam convergence and control device, so a distance of several meters is required. As the acceleration energy of the particle beam increases in this way, the radius of rotation of the irradiation device increases and the weight of the electromagnet also increases, so if a corresponding counterbalance is added, the size and weight of the device will become significantly large.
装置全体のコストが極めて増大する。 The cost of the entire device increases significantly.
装置は放射線を遮蔽するためコンクリートの
遮へい壁でシールドされた室内に設置される
が、加速エネルギが巨大化すると室内容積が増
大するのみならずシールド壁の厚さも増加する
ので、装置全体のコストは幾可級数的に増大す
る。 The device is installed in a room shielded by a concrete shielding wall to shield radiation, but as the acceleration energy increases, not only does the interior volume increase, but the thickness of the shielding wall also increases, so the overall cost of the device decreases. It increases exponentially.
人体を床上より高い空間上に保持するため安
全上の問題も派生する。 Safety issues also arise because the human body is held in a space higher than the floor.
この発明は前記従来の問題点を解消すべく提案
されたもので、その目的は加速エネルギが増大し
た場合にもさほど装置が巨大化しない回転照射装
置を提供することにある。 This invention has been proposed to solve the above-mentioned conventional problems, and its purpose is to provide a rotating irradiation device that does not become too large even when acceleration energy increases.
以下この発明を図示する一実施例に基づいて説
明する。これは陽子照射装置の一例を示すもので
あり、従来と同一あるいは相当する部分には同一
符号を付して説明する。第２図、第３図におい
て、真空ダクト４から入射した粒子ビームは回転
継手５を経て第一偏向電磁石６を通り、さらに第
二偏向電磁石８により曲げられ、ビーム収束調整
装置１８を経てチタン箔で端末を真空シールドさ
れたダクト１９より空気中に出た後患者１の患部
２に照射される。 The present invention will be described below based on an illustrated embodiment. This shows an example of a proton irradiation device, and the same reference numerals are given to parts that are the same as or correspond to the conventional ones and will be explained. In FIGS. 2 and 3, the particle beam incident from the vacuum duct 4 passes through the rotary joint 5, the first bending electromagnet 6, is further bent by the second bending electromagnet 8, passes through the beam convergence adjustment device 18, and then passes through the titanium foil. After the terminal exits into the air through the vacuum-shielded duct 19, the affected area 2 of the patient 1 is irradiated.
これらの機器６，８，１８，１９は共通フレー
ム１１に固定され、このフレーム１１は床上に固
定されたブラケツト１２，１２′により軸受１
３，１３′を介して回転自在に支持されるととも
に駆動源１４により歯車１５，１６を介して装置
回転中心軸L1の回りを回転するようにされてい
る。 These devices 6, 8, 18, 19 are fixed to a common frame 11, which is connected to the bearings 1 by means of brackets 12, 12' fixed on the floor.
It is rotatably supported via gears 3 and 13' and rotated by a drive source 14 via gears 15 and 16 around the center axis of rotation L1 of the device.
患者１を収容する治療室２０は中心軸L1に対
して機器６，８等の偏向装置と反対側に配置され
ベツド２１が取付けられたフロア２２とこれらを
取囲む円筒状の室体２３とからなる。この室体２
３はその中心軸L2が患部２（治療位置）を通る
ようにフレーム１１に固定されており、さらにフ
ロア２２はこの中心軸L2の回りを回転自在に軸
２４を介して室体２３に取付けられている。そし
て、この軸２４の端部には鎖車２５が設けられる
とともにブラケツト１２′の軸受１３′の外側に鎖
車２６が固着され、この鎖車２５と鎖車２６とは
鎖２７で連結され回転比が１：１となるようにさ
れるとともにフロア２２が装置の回転と逆回転す
るようにされている。これによりフロア２２はフ
レーム１１の回転角度分だけ逆方向に回転し、装
置の回転中フロア２２は常に水平状態を保持する
ことになる。 The treatment room 20 that accommodates the patient 1 is arranged on the opposite side of the central axis L 1 from the deflection devices such as the devices 6 and 8, and has a floor 22 on which a bed 21 is attached, and a cylindrical chamber body 23 surrounding them. Consisting of This chamber body 2
3 is fixed to the frame 11 so that its center axis L 2 passes through the affected area 2 (treatment position), and the floor 22 is rotatably attached to the chamber body 23 via a shaft 24 around this center axis L 2 . installed. A chain wheel 25 is provided at the end of this shaft 24, and a chain wheel 26 is fixed to the outside of the bearing 13' of the bracket 12', and the chain wheel 25 and chain wheel 26 are connected by a chain 27 and rotate. The ratio is 1:1 and the floor 22 is rotated counter to the rotation of the device. As a result, the floor 22 rotates in the opposite direction by the rotation angle of the frame 11, and the floor 22 always maintains a horizontal state while the apparatus is rotating.
また、このような回転運動において機器１８，
１９はベツド２１の回りを回転することとなるか
らベツド２１の下方のフロア２２には通過路２８
が設けられている。 In addition, in such rotational movement, the equipment 18,
19 rotates around the bed 21, so there is a passageway 28 on the floor 22 below the bed 21.
is provided.
なお、患部２に照射されたビームは進行方向に
中性子の前方散乱を生じるので室体２３の外側に
おける散乱発生部分に局部的にコンクリートある
いはその他の適切な材料からなる放射線シールド
部材２９が設けられている。このシールド部材２
９は室体２３の壁厚の増加を防止するとともにカ
ウンタバランスの役割を果している。 Note that since the beam irradiated to the affected area 2 causes forward scattering of neutrons in the traveling direction, a radiation shielding member 29 made of concrete or other suitable material is locally provided in the area where scattering occurs outside the chamber body 23. There is. This shield member 2
9 serves to prevent the wall thickness of the chamber body 23 from increasing and also serves as a counterbalance.
以上のような構成において装置を中心軸L1の
回りに回転させればフロア２２は常に水平状態を
保持したまま中心軸L1の回りを回転することに
なり所定の照射を行ない得る。 With the above configuration, if the apparatus is rotated around the central axis L1 , the floor 22 will be rotated around the central axis L1 while always maintaining a horizontal state, and a predetermined irradiation can be performed.
前述のとおり、この発明によれば、円筒状治療
室を装置回転中心軸に対して偏向装置の反対側に
設け、治療室の軸線上に治療位置が位置し、かつ
治療室の床が装置回転中常に水平状態を保つよう
に、床を治療室の軸線上に回転自在に取付けたた
め、装置の回転半径を小さくすることができ装置
の重量・寸法を極めて小さくすることができ、よ
つて、装置コストを低減することができる。ま
た、治療室は円筒状の室体により患者、医師を取
囲むようにしてあるため高所空間における安全を
確保することができる。 As described above, according to the present invention, the cylindrical treatment chamber is provided on the opposite side of the deflection device with respect to the central axis of rotation of the device, the treatment position is located on the axis of the treatment chamber, and the floor of the treatment chamber is located opposite to the rotation center axis of the device. Because the floor is rotatably mounted on the axis of the treatment room so that it remains horizontal at all times, the rotation radius of the device can be reduced, and the weight and size of the device can be extremely small. Cost can be reduced. Furthermore, since the treatment room has a cylindrical chamber body that surrounds the patient and doctor, safety in a high-altitude space can be ensured.
第１図は従来の回転照射治療装置を示す正面
図、第２図はこの発明に係る回転照射治療装置の
正面図、第３図は同様の側面図である。
１……患者、２……患部、３……ベツド、４…
…真空ダクト、５……回転継手、６……第一偏向
電磁石、７……真空ダクト、８……第二偏向電磁
石、９……ターゲツト、１０……シールド、１１
……フレーム、１２，１２′……ブラケツト、１
３，１３′……軸受、１４……駆動源、１５，１
６……歯車、１７……カウンタバランス、１８…
…ビーム収束調整装置、１９……ダクト、２０…
…治療室、２１……ベツド、２２……フロア、２
３……室体、２４……軸、２５，２６……鎖車、
２７……鎖、２８……通過路、２９……シールド
部材。
FIG. 1 is a front view of a conventional rotational irradiation treatment apparatus, FIG. 2 is a front view of a rotational irradiation treatment apparatus according to the present invention, and FIG. 3 is a similar side view. 1...patient, 2...affected area, 3...bed, 4...
...Vacuum duct, 5...Rotary joint, 6...First bending electromagnet, 7...Vacuum duct, 8...Second bending electromagnet, 9...Target, 10...Shield, 11
...Frame, 12,12'...Bracket, 1
3,13'... Bearing, 14... Drive source, 15,1
6...Gear, 17...Counter balance, 18...
...Beam convergence adjustment device, 19...Duct, 20...
...Treatment room, 21...Bed, 22...Floor, 2
3... Chamber body, 24... Shaft, 25, 26... Chain wheel,
27... Chain, 28... Passage path, 29... Shield member.
Claims (1)
この回転中心軸から外方へ湾曲させた後所定治療
位置へ導く偏向装置を備え前記回転中心軸の回り
を回転可能とされた回転照射治療装置において、 円筒状治療室を前記回転中心軸に対して前記偏
向装置の反対側に設け、該治療室の軸線上に治療
位置が位置し、かつ該治療室の床が装置回転中常
に水平状態となるように、該床を治療室の軸線上
に回転自在に取付けたことを特徴とする回転照射
治療装置。 ２ 治療室の床が装置回転方向と逆方向に回転し
かつ常に水平状態を保持するように治療室の床を
回転自在に支持する軸と装置回転中心軸の支持固
定部とを動力伝達機構で接続したことを特徴とす
る特許請求の範囲第１項記載の回転照射治療装
置。 ３ 治療室の放射線散乱位置にカウンタバランス
を兼ねる放射線シールド部材を設けたことを特徴
とする特許請求の範囲第１項または第２項記載の
回転照射治療装置。[Scope of Claims] 1. A device capable of rotating around the rotation center axis, including a deflection device that bends radiation incident along the rotation center axis of the device outward from the rotation center axis and then guides it to a predetermined treatment position. In the rotary irradiation treatment device, a cylindrical treatment chamber is provided on the opposite side of the deflection device with respect to the central axis of rotation, the treatment position is located on the axis of the treatment chamber, and the floor of the treatment chamber is located above the device. A rotating irradiation treatment device characterized in that the floor is rotatably mounted on the axis of a treatment room so that the floor is always in a horizontal state during rotation. 2. A power transmission mechanism is used to connect the shaft that rotatably supports the floor of the treatment room and the support fixing part of the central axis of rotation of the device so that the floor of the treatment room rotates in the opposite direction to the rotation direction of the device and always maintains a horizontal state. The rotating irradiation treatment device according to claim 1, characterized in that the rotating irradiation treatment device is connected. 3. The rotary irradiation treatment apparatus according to claim 1 or 2, characterized in that a radiation shielding member that also serves as a counterbalance is provided at a radiation scattering position in the treatment room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15274779A JPS5675174A (en) | 1979-11-26 | 1979-11-26 | Rotary irradiating treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15274779A JPS5675174A (en) | 1979-11-26 | 1979-11-26 | Rotary irradiating treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5675174A JPS5675174A (en) | 1981-06-22 |
| JPS6121109B2 true JPS6121109B2 (en) | 1986-05-26 |
Family
ID=15547271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15274779A Granted JPS5675174A (en) | 1979-11-26 | 1979-11-26 | Rotary irradiating treatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5675174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0167813U (en) * | 1987-10-26 | 1989-05-01 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62183775A (en) * | 1986-02-06 | 1987-08-12 | 日新ハイボルテ−ジ株式会社 | Therapeutic beam irradiation apparatus |
| JP2824363B2 (en) * | 1992-07-15 | 1998-11-11 | 三菱電機株式会社 | Beam supply device |
| JP2836446B2 (en) * | 1992-11-30 | 1998-12-14 | 三菱電機株式会社 | Charged particle beam irradiation device |
| US10603518B2 (en) | 2017-03-14 | 2020-03-31 | Varian Medical Systems, Inc. | Rotatable cantilever gantry in radiotherapy system |
| US10426977B2 (en) | 2017-06-30 | 2019-10-01 | Varian Medical Systems Particle Therapy Gmbh. | Moving floor for radiotherapy system with cantilever gantry assembly |
-
1979
- 1979-11-26 JP JP15274779A patent/JPS5675174A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0167813U (en) * | 1987-10-26 | 1989-05-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5675174A (en) | 1981-06-22 |
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