JP2007222433A - 荷電粒子ビーム照射システム及び荷電粒子ビーム出射方法 - Google Patents
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Abstract
【解決手段】RMWを回転方向において分割して形成される複数の角度領域のうち目標線量に達した角度領域へのイオンビームの供給を停止しその目標線量に到達していない他の角度領域にイオンビームを供給することにある。このため、患部内のイオンビーム進行方向における各位置に対する照射線量を容易に調節することができ、患部内のイオン進行方向における各位置において照射線量の過不足が生じる誤照射の確率を著しく低減することができる。
【選択図】図1
Description
このエネルギー調整装置の回転角度及びエネルギー調整装置を透過した荷電粒子ビームの線量に基づいて、加速装置からの荷電粒子ビームの出射開始及び出射停止を制御することにある。
このエネルギー調整装置を回転方向において分割して形成される複数の領域のうち目標線量に達した前記領域への荷電粒子ビームの供給を停止し、前記目標線量に到達していない他の前記領域に荷電粒子ビームを供給することにあるとも言える。
(実施形態1)
図1に示すように、本実施形態の粒子線治療装置(イオンビーム照射システム)は、治療ベッド217に固定された患者216の患部216aに対してイオンビーム(例えば陽子線)を照射するものであり、イオンビーム発生装置(陽子線発生装置、粒子線発生装置)1、中央制御装置100、照射野形成装置200、照射制御システム300を備える。
Claims (14)
- 荷電粒子ビームを加速して出射する加速装置と、
前記加速装置から出射された前記荷電粒子ビームが透過するエネルギー調整装置を有し、前記エネルギー調整装置を透過した前記荷電粒子ビームを照射対象に照射するビーム照射装置とを備え、
前記エネルギー調整装置は、回転可能で、軸方向の厚みが回転方向において異なり、
前記エネルギー調整装置の回転角度及び前記エネルギー調整装置を透過した前記荷電粒子ビームの線量に基づいて、前記加速装置からの前記荷電粒子ビームの出射開始及び出射停止を制御する制御装置を備えたことを特徴とする荷電粒子ビーム照射システム。 - 前記制御装置は、前記回転角度及び前記線量に基づいて、前記回転方向における前記エネルギー調整装置の複数領域のそれぞれを透過した前記荷電粒子ビームの前記線量の積算値を求め、前記領域ごとの前記積算値に基づいて、前記加速装置からの前記荷電粒子ビームの出射開始及び出射停止を制御することを特徴とする請求項1に記載の荷電粒子ビーム照射システム。
- 前記エネルギー調整装置の回転角度を検出する角度検出器と、
前記エネルギー調整装置を透過した前記荷電粒子ビームの線量を計測する計測装置とを備え、
前記制御装置は、前記回転角度及び前記線量に基づいて、前記加速装置からの前記荷電粒子ビームの出射開始及び出射停止を制御することを特徴とする請求項1に記載の荷電粒子ビーム照射システム。 - 前記制御装置は、前記積算値が目標線量に達した前記領域がビーム経路に位置するときは前記加速装置からの前記荷電粒子ビームの出射を停止し、前記積算値が前記目標線量に達していない前記角度領域が前記ビーム経路に位置するときには前記荷電粒子ビームを前記加速装置から出射することを特徴とする請求項2に記載の荷電粒子ビーム照射システム。
- いずれかの前記領域における前記荷電粒子ビームの前記積算値が、当該領域において設定された許容値以上になったときに、前記加速装置からの前記荷電粒子ビームの出射を中止する安全装置を備えることを特徴とする請求項2に記載の荷電粒子ビーム照射システム。
- 前記エネルギー調整装置の前記回転方向における第1の角度領域を通過した前記荷電粒子ビームの前記積算値と前記第1角度領域以外の角度領域である第2の角度領域を通過した前記荷電粒子ビームの積算値との比が、設定した許容値を越えたときに、前記加速装置からの前記荷電粒子ビームの出射を中止する安全装置を備えることを特徴とする請求項2に記載の荷電粒子ビーム照射システム。
- 前記領域ごとの前記荷電粒子ビームの積算値を表示する表示装置を備えることを特徴とする請求項2に記載の荷電粒子ビーム照射システム。
- 出射用の高周波印加装置を有し、荷電粒子ビームを加速して出射する加速装置と、
前記加速装置から出射された前記荷電粒子ビームが透過するエネルギー調整装置を有し、前記荷電粒子ビームを照射対象に照射するビーム照射装置とを備え、
前記エネルギー調整装置は、回転可能で、軸方向の厚みが回転方向において異なり、
前記エネルギー調整装置の回転角度及び前記エネルギー調整装置を透過した前記荷電粒子ビームの線量に基づいて、前記高周波印加装置への高周波信号の供給及び供給停止を制御する制御装置を備えたことを特徴とする荷電粒子ビーム照射システム。 - 荷電粒子ビームを生成するイオン源と、
前記イオン源から出射する前記荷電粒子ビームを加速する加速装置と、
前記加速装置から出射する前記荷電粒子ビームが透過するエネルギー調整装置を有し、前記荷電粒子ビームを照射対象に照射するビーム照射装置とを備え、
前記エネルギー調整装置は、回転可能で、軸方向の厚みが回転方向において異なり、
前記エネルギー調整装置の回転角度及び前記エネルギー調整装置を透過した前記荷電粒子ビームの線量に基づいて、前記イオン源からの前記荷電粒子ビームの出射開始及び出射停止を制御する制御装置を備えたことを特徴とする荷電粒子ビーム照射システム。 - 荷電粒子ビームを加速して出射する加速装置と、
前記加速装置から出射する前記荷電粒子ビームが透過するエネルギー調整装置を有し、前記エネルギー調整装置を透過した前記荷電粒子ビームを照射対象に照射するビーム照射装置とを備え、
前記エネルギー調整装置は、回転可能で、軸方向の厚みが回転方向において異なり、
前記エネルギー調整装置を前記回転方向において分割して形成される複数の領域のうち目標線量に達した前記領域への前記荷電粒子ビームの供給を停止し、前記目標線量に到達していない他の前記領域に前記荷電粒子ビームを供給する制御装置を備えることを特徴とする荷電粒子ビーム照射システム。 - 前記制御装置は、前記領域を透過した前記荷電粒子ビームの線量の積算値が前記目標線量に達した前記領域への前記荷電粒子ビームの供給を停止し、前記積算値が前記目標線量に達していない他の領域に前記荷電粒子ビームを供給することを特徴とする請求項10に記載の荷電粒子ビーム照射システム。
- 前記エネルギー調整装置の回転角度を検出する角度検出器を備え、
前記制御装置は、前記回転角度に基づいて前記荷電粒子ビームの供給及び供給停止することを特徴とする請求項10に記載の荷電粒子ビーム照射システム。 - 前記加速装置から出射された荷電粒子ビームを、回転可能で、軸方向の厚みが回転方向において異なるエネルギー調整装置に供給し、
前記エネルギー調整装置の回転角度及び前記エネルギー調整装置を透過した前記荷電粒子ビームの線量に基づいて、前記加速装置からの前記荷電粒子ビームの出射開始及び出射停止を制御することを特徴とする荷電粒子ビーム出射方法。 - 前記加速装置から出射された荷電粒子ビームを、回転可能で、軸方向の厚みが回転方向において異なるエネルギー調整装置に供給し、
前記エネルギー調整装置を前記回転方向において分割して形成される複数の領域のうち目標線量に達した前記領域への前記荷電粒子ビームの供給を停止し、前記目標線量に到達していない他の前記領域に前記荷電粒子ビームを供給することを特徴とする荷電粒子ビーム出射方法。
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EP2073612A2 (en) | 2007-12-21 | 2009-06-24 | Hitachi Ltd. | Charged particle beam irradiation apparatus |
JP2009273632A (ja) * | 2008-05-14 | 2009-11-26 | Hitachi Ltd | 荷電粒子ビーム出射装置及び荷電粒子ビーム出射方法 |
CN108939323A (zh) * | 2018-07-11 | 2018-12-07 | 中国科学院近代物理研究所 | 用于粒子治疗装置的剂量配送*** |
CN110267709A (zh) * | 2018-01-12 | 2019-09-20 | 新瑞阳光粒子医疗装备(无锡)有限公司 | 束流控制方法、装置、质子放疗***及存储介质 |
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EP1826778A2 (en) | 2007-08-29 |
EP1826778B1 (en) | 2014-05-07 |
JP4696965B2 (ja) | 2011-06-08 |
US20080067405A1 (en) | 2008-03-20 |
EP1826778B8 (en) | 2014-08-13 |
US7825388B2 (en) | 2010-11-02 |
EP1826778A3 (en) | 2011-01-05 |
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