JP5657531B2 - 粒子療法検証のための装置及び方法 - Google Patents
粒子療法検証のための装置及び方法 Download PDFInfo
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Description
ファントムに荷電ハドロンビームを照射する段階と、
照射の間に放出された即発ガンマ線を検出する段階と、
検出された即発ガンマ線から前記荷電ハドロンビームの領域または侵入深さを推測する段階と、
専用の領域測定装置でファントム中の荷電ハドロンビームの領域を測定する段階と、
即発ガンマ線検出に基づく推測領域を、前記専用の領域測定装置で測定された領域と比較する段階と、を含む方法に関する。
前記検出された即発ガンマ線に基づいてファントムに与えられた放射線量を計算する段階をさらに含む。
ファントムに対して固定位置に即発ガンマ線検出器を配置する段階をさらに含む。
荷電ハドロンビームを照射する段階と、
放出された即発ガンマ線を検出する段階と、
検出された即発ガンマ線から前記荷電ハドロンビームの領域または侵入深さを推測する段階と、
専用の領域測定装置で荷電ハドロンビームの領域を測定する段階と、
即発ガンマ線検出に基づく推測領域を、前記専用の領域測定装置で測定された領域と比較する段階と、を含む方法に関する。
前記検出された即発ガンマ線に基づいて放射線量を計算する段階をさらに含む。
処理室に対して固定位置に即発ガンマ線検出器を配置する段階をさらに含む。
[実施形態1]
[実施形態2]
β=arctg(R/(2f))
ここで、fは焦点距離、すなわちピンホールとシンチレーション材料表面との間の距離であり、Rはシンチレーション材料の長手方向の長さである。
ファントムに荷電ハドロンビームを照射する段階と、
照射の間に放出された即発ガンマ線を検出する段階と、
検出された即発ガンマ線から前記荷電ハドロンビームの領域または侵入深さを推測する段階と、
専用の領域測定装置でファントム中の荷電ハドロンの領域を測定する段階と、
即発ガンマ線検出に基づく推測領域を、前記専用の領域測定装置で測定された領域と比較する段階と、を含む。
患者に荷電ハドロンビームを照射する段階と、
患者の照射の間、すなわち前記ハドロンビームが患者の体に侵入する間に放出された即発ガンマ線を検出する段階と、
検出された即発ガンマ線から前記ハドロンビームの領域または侵入深さを推測する段階と、を含む方法において使用することができる。
患者に荷電ハドロンビームを照射する間に放出された即発ガンマ線を検出する段階と、
検出された即発ガンマ線から、前記照射の結果得られる患者における線量分布を推測する段階と、を含む方法においても使用することができる。
患者に荷電ハドロンビームを照射する間に放出された即発ガンマ線を検出する段階と、
即発ガンマ線検出に基づいて、患者に与えられた放射線量を計算する段階と、を含む方法においても使用することができる。
2、23 シンチレーション結晶
3、24 光電子増倍管
4、25 電子機器
5、26 演算手段
6、27 外層
7、28 内層
8、29 第三の層
9、30 光軸
10 アンガーカメラ
21 ピンホール
Claims (10)
- 荷電ハドロンビームを物体または体に照射する場合に生成される即発ガンマ線を検出及び/または定量化することによる荷電ハドロン療法検証のための装置であって、前記装置は、
前記荷電ハドロンビームが前記物体または体に侵入する間に放出される前記即発ガンマ線の数を取得するように配置されたガンマ線ピンホールカメラ(20)であって、
直線または二次元配列をなす複数の光電子増倍管(24)と光学的に連結された少なくとも1つのシンチレーション結晶(23)と、データ取得のための電気的手段(25)と、を備えるガンマ線ピンホールカメラ(20)と、
前記電気的手段(25)に接続され、計測された前記即発ガンマ線から、前記物体または体における前記荷電ハドロンビームの測定侵入深さまたは領域を決定することが可能な演算手段(26)と、
を備え、
前記ピンホールカメラのピンホールは、円錐形を有し、前記荷電ハドロンビームの方向に対して90°の方向から照射されない即発ガンマ線を検出することができることを特徴とする装置。 - 前記ガンマ線ピンホールカメラが、不要な粒子の検出を防ぐための遮蔽手段(27,28,29)を備える、請求項1に記載の装置。
- 前記演算手段(26)が、前記測定侵入深さを理論的または予定侵入深さと比較することを可能にする、請求項1に記載の装置。
- 前記電気的手段(25)に接続された前記演算手段(26)が、相対的線量蓄積を表す画像の構築を可能にする、請求項1から3のいずれか一項に記載の装置。
- 前記画像が、相対的線量蓄積の二次元または三次元表示である、請求項4に記載の装置。
- カメラ(30)の光軸がビームの方向に垂直である、請求項1から5のいずれか一項に記載の装置。
- ピンホール(21)の内径dが、最もエネルギーの高い放出された即発ガンマ線の波長の値よりも厳密に高い、請求項1から6のいずれか一項に記載の装置。
- 前記荷電ハドロンビームの時間構造に同調した前記即発ガンマ線の前記数を取得するための電気的手段をさらに備える、請求項1から7のいずれか一項に記載の装置。
- ファントムに粒子ビームを照射することによって得られる即発ガンマ線を検出することによる荷電ハドロン療法検証のための方法であって、
前記ファントムに対して固定位置に即発ガンマ線検出器を配置する段階と、
ファントムに荷電ハドロンビームを照射する段階と、
照射の間に放出された即発ガンマ線を検出する段階と、
検出された即発ガンマ線から前記荷電ハドロンビームの領域または侵入深さを推測する段階と、
専用の領域測定装置でファントム中の荷電ハドロンビームの領域を測定する段階と、
即発ガンマ線検出に基づく推測領域を、前記専用の領域測定装置で測定された領域と比較する段階と、を含み、
前記即発ガンマ線検出器が、直線または二次元配列をなす複数の光電子増倍管(24)と光学的に連結された少なくとも1つのシンチレーション結晶(23)を備えるガンマ線ピンホールカメラであり、前記ピンホールカメラのピンホールは、円錐形を有し、前記荷電ハドロンビームの方向に対して90°の方向から照射されない即発ガンマ線を検出することができることを特徴とする方法。 - 前記検出された即発ガンマ線に基づいてファントムに与えられた放射線量を計算する段階をさらに含む、請求項9に記載の方法。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08159577A EP2140913A1 (en) | 2008-07-03 | 2008-07-03 | Device and method for particle therapy verification |
| EP08159577.9 | 2008-07-03 | ||
| PCT/EP2009/058458 WO2010000857A1 (en) | 2008-07-03 | 2009-07-03 | Device and method for particle therapy verification |
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| Publication Number | Publication Date |
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| JP2011526504A JP2011526504A (ja) | 2011-10-13 |
| JP5657531B2 true JP5657531B2 (ja) | 2015-01-21 |
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| Country | Link |
|---|---|
| US (1) | US8481951B2 (ja) |
| EP (2) | EP2140913A1 (ja) |
| JP (1) | JP5657531B2 (ja) |
| WO (1) | WO2010000857A1 (ja) |
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| US8481951B2 (en) | 2013-07-09 |
| JP2011526504A (ja) | 2011-10-13 |
| WO2010000857A1 (en) | 2010-01-07 |
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