JP2016533211A - 医療処置シミュレーションに基づく放射線推定及び防護 - Google Patents
医療処置シミュレーションに基づく放射線推定及び防護 Download PDFInfo
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Abstract
Description
Claims (21)
- シミュレートされるX線誘導医療処置の間の一人以上の人間の放射線被曝量を、人間が電離放射線に被曝することなく決定するシステムであって、
前記X線誘導医療処置の間のX線撮影装置からの放射線の放出を、電離放射線を放出することなくシミュレートするX線撮影装置モデルであって、前記X線撮影装置モデルは、前記X線誘導医療処置の間に制御される操作設定に対応する第1のセットの入力パラメータを備え、前記入力パラメータは、前記シミュレートされるX線誘導医療処置の間に変化するように構成されるX線装置撮影モデルと、
前記X線誘導医療処置の間の一つ以上の人体構造をシミュレートする人間被曝モデルであって、前記人間被曝モデルは、前記X線誘導医療処置の間の一つ以上の人体構造の位置及び構造に対応する第2のセットの入力パラメータを備える人間被曝モデルと、
前記X線誘導医療処置の部屋に配置された一人以上の人間の少なくとも一つの放射線被曝量を計算する放射線量プロセッサであって、前記放射線被曝量の計算は、前記X線誘導医療処置の間に行い、前記第1のセットの入力パラメータ及び前記第2のセットの入力パラメータ並びに前記放射線被曝量の変化に伴う前記第1のセットの入力パラメータ及び前記第2のセットの入力パラメータの変化に関連するモデルに基づく放射線量プロセッサと、
前記X線誘導医療処置の間の前記少なくとも一つの放射線被曝量に基づく情報を出力するフィードバックシステムと、
を備えるシステム。 - 前記人間被曝モデルは、人体構造の少なくも一つの3次元表示を備える請求項1に記載のシステム。
- 前記フィードバックシステムは、前記X線撮影装置モデル及び前記人間被曝モデルに基づいて人間のX線画像を表示するX線撮影シミュレータを更に備え、前記X線撮影シミュレータは、前記入力パラメータの前記変化に応答して一連のX線画像を表示する請求項1に記載のシステム。
- 前記放射線量プロセッサは、前記入力パラメータの前記変化に基づいてX線画像ノイズパターンを計算し、前記X線撮影シミュレータは、表示されたX線画像にX線ノイズを加え、前記X線ノイズは、放射線量に基づいて生成される請求項3に記載のシステム。
- 前記人間被曝モデルは、CTスキャンとMRIスキャンの一方からの患者についての既存の患者データに基づく請求項1に記載のシステム。
- 前記X線撮影装置モデルは、X線蛍光透視機器をシミュレートする請求項1に記載のシステム。
- 前記入力パラメータは、処置から取得した放射線報告からのデータ又はDICOMデータに基づいて設定される請求項1に記載のシステム。
- 前記人間被曝モデルは、患者の寸法、患者の外形、患者の体重、患者の性、妊娠の状態及び年齢の一つ以上を備える請求項1に記載のシステム。
- 医療機器の動きを追跡するとともに検出した動きを前記人間被曝モデルの内部の仮想機器の動きに変換する血管内シミュレータを更に備える請求項3に記載のシステム。
- 前記X線撮影シミュレータは、前記血管内シミュレータに基づいて、前記人間被曝モデルの内部を動く医療機器の模倣した蛍光透視画像を表示する請求項9に記載のシステム。
- 人間のX線誘導医療処置をシミュレートするとともにX線誘導医療処置の間の一人以上の人間の放射線被曝量を決定するシステムであって、
前記X線誘導医療処置の間のX線撮影装置からの放射線の放出をシミュレートするX線撮影装置モデルであって、前記X線撮影装置モデルは、前記X線誘導医療処置の間に制御される操作設定に対応する入力パラメータを備え、前記入力パラメータは、前記X線誘導医療処置の間に変化するように構成されるX線装置撮影モデルと、
前記X線誘導医療処置の間の一つ以上の人体構造をシミュレートする人間被曝モデルと、
前記X線誘導医療処置の部屋に配置された一人以上の人間の放射線被曝量を前記X線装置撮影モデル及び前記人間被曝モデルに基づいて計算する放射線量プロセッサであって、前記X線誘導医療処置の間に、前記放射線量プロセッサは、放射線被曝量を、前記入力パラメータの変化に応答して変更し、前記放射線被曝線量の変更は、前記入力パラメータのモデルに基づく放射線量プロセッサと、
変更された放射線量を格納するデータ収集記憶装置と、
を備えるシステム。 - 前記データ収集記憶装置は、一つ以上の変更された放射線量をタイムラインに格納する請求項11に記載のシステム。
- X線誘導医療処置の間の一人以上の人間の放射線被曝量を決定する方法であって、
前記X線誘導医療処置の間の一つ以上の人体構造の寸法及び外形を人間被曝モデルに基づいて計算するステップと、
X線源から放出されたX線ビームの形状を、X線撮影装置モデル及びX線誘導医療処置の間に制御される操作設定に対応する入力パラメータに基づいて計算し、前記入力パラメータは、前記X線誘導医療処置の間に変化されるように構成されるステップと、
一つ以上の人体構造の寸法及び外形並びに前記放出されたX線ビームの形状に基づいて一人以上の人間の放射線被曝量を計算し、前記放射線被曝量の計算を前記X線誘導医療処置の間に行うステップであって、
第1の放射線量の値を提供することと、
前記入力パラメータの値の変化に基づいてスケール因子を計算することと、
第2の放射線量の値を提供するために、前記第1の放射線量の値を、前記スケール因子を用いて調整することと、
を備えるステップと、
前記第2の放射線量の値を出力するステップと、
を備える方法。 - 前記放射線量は、KAP率と空気カーマ率の一方を備える請求項13に記載の方法。
- 現実世界の動作中のX線システムから取得した放射線量に基づいて前記放射線量を較正するステップを更に備える請求項13に記載の方法。
- 前記放射線量は、計算される散乱放射線を備える請求項13に記載の方法。
- 前記放射線被曝量を計算するステップは、一連のX線画像を生成することと、前記入力パラメータの変化に応答してノイズパターンを生成することと、前記一連のX線画像を、前記ノイズパターンを用いて変更することと、を更に備える請求項13に記載の方法。
- 前記出力するステップは、前記X線誘導医療処置の間に計算した現在の放射線量及び累積放射線量に基づく人の放射線被曝のレベルを表すヒートマップを表示することを備える請求項13に記載の方法。
- 前記出力するステップは、前記X線誘導医療処置の間に計算した累積放射線量に基づく確率的及び決定的リスクのレベルを表すヒートマップを表示することを備える請求項13に記載の方法。
- ユーザのパフォーマンスを評価するとともに放射線被曝を減少させるための示唆を提供するステップを更に備える請求項13に記載の方法。
- 前記第1の放射線量の値は、処置から取得した放射線報告からのデータ又はDICOMデータに基づく請求項13に記載の方法。
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