JP2022509006A - 関心領域データを使用する最適化されるスキャン方法および断層撮影システム - Google Patents
関心領域データを使用する最適化されるスキャン方法および断層撮影システム Download PDFInfo
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Abstract
【選択図】 図4
Description
本出願は、11個の米国仮特許出願、すなわち、第62/773,712号(出願日2018年11月30日)(代理人整理番号:38935/04001)、第62/773,700号(出願日2018年11月30日)(代理人整理番号:38935/04002)、第62/796,831号(出願日2019年1月25日)(代理人整理番号:38935/04004)、第62/800,287号(出願日2019年2月1日)(代理人整理番号:38935/04003)、第62/801,260号(出願日2019年2月5日)(代理人整理番号:38935/04006)、第62/813,335号(出願日2019年3月4日)(代理人整理番号:38935/04007)、第62/821,116号(出願日2019年3月20日)(代理人整理番号:38935/04009)、第62/836,357号(出願日2019年4月19日)(代理人整理番号:38935/04016)、第62/836,352号(出願日2019年4月19日)(代理人整理番号:38935/04017)、第62/843,796号(出願日2019年5月6日)(代理人整理番号:38935/04005)、第62/878,364号(出願日2019年7月25日)(代理人整理番号:38935/04008)、の利益を主張する。さらに本出願は、同じ日に出願された10個の米国非仮特許出願、すなわち、代理人整理番号38935/04019、タイトル「MULTIMODAL RADIATION APPARATUS AND METHODS」、代理人整理番号38935/04020、タイトル「APPARATUS AND METHODS FOR SCALABLE FIELD OF VIEW IMAGING USING A MULTI-SOURCE SYSTEM」、代理人整理番号38935/04011、タイトル「INTEGRATED HELICAL FAN-BEAM COMPUTED TOMOGRAPHY IN IMAGE-GUIDED RADIATION TREATMENT DEVICE」、代理人整理番号38935/04010、タイトル「COMPUTED TOMOGRAPHY SYSTEM AND METHOD FOR IMAGE IMPROVEMENT USING PRIOR IMAGE」、代理人整理番号38935/04015、タイトル「HELICAL CONE-BEAM COMPUTED TOMOGRAPHY IMAGING WITH AN OFF-CENTERED DETECTOR」、代理人整理番号38935/04021、タイトル「MULTI-PASS COMPUTED TOMOGRAPHY SCANS FOR IMPROVED WORKFLOW AND PERFORMANCE」、代理人整理番号38935/04012、タイトル「METHOD AND APPARATUS FOR SCATTER ESTIMATION IN CONE-BEAM COMPUTED TOMOGRAPHY」、代理人整理番号38935/04014、タイトル「ASYMMETRIC SCATTER FITTING FOR OPTIMAL PANEL READOUT IN CONE-BEAM COMPUTED TOMOGRAPHY」、代理人整理番号38935/04018、タイトル「METHOD AND APPARATUS FOR IMPROVING SCATTER ESTIMATION AND CORRECTION IN IMAGING」、代理人整理番号38935/04022、タイトル「METHOD AND APPARATUS FOR IMAGE RECONSTRUCTION AND CORRECTION USING INTER-FRACTIONAL INFORMATION」、にも関連する。上に記載した特許出願および特許の内容は、その全体が参照により本明細書に組み込まれている。
Claims (20)
- 患者の画像誘導放射線治療(IGRT)において使用する撮像方法であって、前記方法は、
前記患者の以前の画像に対応する画像データを受信するステップであって、前記画像データが、関心領域(ROI)に対応するデータを含む、受信するステップと、
前記患者の投影画像データを取得するステップと、
前記患者の前記取得された投影画像データに基づいて画像再構成を実行して患者画像を取得するステップと、
前記以前の画像を前記取得された患者画像にレジストレーションし、レジストレーションされた画像を取得するステップと、
前記レジストレーションされた画像内で前記ROIを識別するステップと、
ROI画像データを前記以前の画像に基づいて投影するステップと、
前記投影されたROI画像データを使用して、最適化されたパラメータセットを生成するステップと、
前記最適化されたパラメータセットを使用して前記患者のCTスキャンを実行するステップと、
を含む、方法。 - ROI画像データを投影する前記ステップが、前記レジストレーションされた画像にも基づく、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、前記患者を撮像するときの管電流を変調するためのデータを含む、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、前記患者を撮像するときの管電位を調整するためのデータを含む、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、前記患者を撮像するときのスキャン速度に対応するデータを含む、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、検出器のゲインに対応するデータを含む、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、検出器のビニングに対応するデータを含む、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、撮像ビームの焦点、撮像ビームの幅、撮像スキャンのヘリカルピッチ、または撮像時の検出器読み出し部サイズ、の少なくとも1つに対応するデータを含む、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、前記患者の身体の様々な領域のX線画像コントラストに対応するデータを含む、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、撮像ビームフィルタの厚さまたは材料に対応するデータを含む、請求項1に記載の方法。
- 前記最適化されたパラメータセットが、撮像ビームのX線線量に対応するデータを含む、請求項1に記載の方法。
- 放射線治療送達装置であって、
少なくとも部分的に患者支持台の周囲に配置されている回転可能なガントリーシステムと、
前記回転可能なガントリーシステムに結合されている第1の放射線源であって、前記第1の放射線源が治療用放射線源として構成されている、前記第1の放射線源と、
前記回転可能なガントリーシステムに結合されている第2の放射線源であって、前記第2の放射線源が、前記治療用放射線源より低いエネルギレベルを有する撮像用放射線源として構成されている、前記第2の放射線源と、
前記回転可能なガントリーシステムに結合されており前記第2の放射線源からの放射線を受信するように配置されている放射線検出器と、
ROIの位置に対応するROIデータを含む患者の画像を投影するコントローラと、
を備えており、
前記コントローラが、前記第2の放射線源に、前記ROIデータに基づいて最適化された撮像用放射線を生成させる、
放射線治療送達装置。 - 前記患者支持台の速度が前記ROIデータに基づいて最適化される、請求項12に記載の放射線治療送達装置。
- 前記第2の放射線源を使用する撮像用放射線のスキャンがヘリカルである、請求項12に記載の放射線治療送達装置。
- 前記ヘリカルスキャンのピッチが前記ROIデータに基づいて最適化される、請求項14に記載の放射線治療送達装置。
- 前記コントローラが、前記第1の放射線源が生成する治療用放射線の線量を前記ROIデータに基づいて最適化する、請求項12に記載の放射線治療送達装置。
- 前記第1の放射線源を使用する治療用放射線のスキャンがヘリカルであり、前記ヘリカルスキャンのピッチが前記ROIデータに基づいて最適化される、請求項12に記載の放射線治療送達装置。
- 前記コントローラが、前記ROIデータを計画画像に基づいて生成する、請求項12に記載の放射線治療送達装置。
- 前記コントローラが、前記第2の放射線源が生成する撮像用放射線の線量を前記ROIデータに基づいて最適化する、請求項12に記載の放射線治療送達装置。
- 放射線治療送達装置であって、
少なくとも部分的に患者支持台の周囲に配置されている回転可能なガントリーシステムと、
前記回転可能なガントリーシステムに結合されている第1の放射線源であって、前記第1の放射線源が治療用放射線源として構成されている、前記第1の放射線源と、
前記回転可能なガントリーシステムに結合されている第2の放射線源であって、前記第2の放射線源が、前記治療用放射線源より低いエネルギレベルを有する撮像用放射線源として構成されている、前記第2の放射線源と、
前記回転可能なガントリーシステムに結合されており前記第2の放射線源からの放射線を受信するように配置されている放射線検出器と、
データ処理システムであって、
患者の以前の画像に対応する画像データを受信するステップであって、前記画像データが、関心領域(ROI)に対応するデータを含む、受信するステップと、
前記患者の投影画像データを取得するステップと、
前記患者の前記取得された投影画像データに基づいて画像再構成を実行して患者画像を取得するステップと、
前記以前の画像を前記取得された患者画像にレジストレーションし、レジストレーションされた画像を取得するステップと、
前記レジストレーションされた画像内で前記ROIを識別するステップと、
ROI画像データを前記以前の画像に基づいて投影するステップと、
前記投影されたROI画像データを使用して、最適化されたパラメータセットを生成するステップと、
前記最適化されたパラメータセットを使用して前記患者のCTスキャンを実行するステップと、
適応IGRT時に前記CTスキャンに基づいて前記第1の放射線源を介して前記患者に治療用放射線の線量を送達するステップと、
を実行するように構成されている、前記データ処理システムと、
を備えている、
放射線治療送達装置。
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