JP5872593B2 - マルチモダリティの心臓撮像 - Google Patents
マルチモダリティの心臓撮像 Download PDFInfo
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Description
Claims (15)
- 検査領域から取得した造影CT投影データを、横方向にオフセットしたフラットパネル検出器を用いて受信するステップ、
1つ以上の造影血管を含む視野を選択するステップ、
前記受信したCT投影データから、前記選択した視野の3Dの減衰補正マップと、3Dの血管画像表現及び少なくとも1つの平面血管造影図の少なくとも1つとを生成するステップであって、前記3Dの減衰補正マップの生成が、3Dボリューム表現において前記造影血管をセグメント化するステップ、前記セグメント化した造影血管を背景強度データと置き換えるステップ、及び前記造影血管が取り除かれ、背景強度データと置き換えられる、前記CT投影データに基づく3Dの減衰補正マップを生成するステップ、を含む、ステップ、
前記検査領域から取得した核投影データを受信するステップ、
前記取得した核投影データを前記生成した減衰補正マップに基づいて補正するステップ、並びに
前記補正した核投影データに基づいて、前記取得した核投影データから前記選択した視野の核画像表現を生成するステップ
を有する画像診断方法。 - 前記3Dの血管画像表現を生成するステップは、
前記選択した視野において前記血管を強調し、背景情報を除去するために、前記受信したCT投影データをフィルタリングするステップ、及び
前記フィルタリングした投影データから、前記視野の3Dの画像表現を再構成するステップ
を有する、請求項1に記載の方法。 - 前記3Dの血管画像表現を生成するステップはさらに、
前記フィルタリングした投影データ及び前記再構成した3Dの画像表現の少なくとも1つを動きに対し補正するステップ
を有する、請求項2に記載の方法。 - 前記再構成は、正則化因子、冗長性重み係数及び小さな更新ステップの少なくとも1つを用いた反復的な再構成アルゴリズムを用いて行われる、請求項1乃至3の何れか一項に記載の方法。
- 少なくとも1つの平面血管造影図を生成するステップは、
前記選択した視野において前記血管を強調するために、前記受信した投影データをフィルタリングするステップ、
各々の投影角度に対し、第1の2Dの打ち切りのある血管造影図及び第2の2Dの打ち切りのある血管造影図を生成するステップであり、前記第2の2Dの打ち切りのある血管造影図は、類似する心臓の動きの状態の間に、所与の投影角度から略180°反対向きの投影角度を持っている、ステップ、並びに
前記第1及び第2の2Dの打ち切りのある血管造影図を融合することにより、各々の投影角度に対する2Dの合成血管造影図を生成するステップ
を有する、請求項1乃至4の何れか一項に記載の方法。 - 前記核画像表現、前記3Dの血管画像表現及び前記少なくとも1つの平面血管造影図を組み合わせて合成画像にするステップ、並びに
前記核画像表現、前記3Dの血管画像表現、前記少なくとも1つの平面血管造影図及び前記合成画像を表示するステップ
をさらに有する、請求項1に記載の方法。 - 前記CT投影データ及び前記核投影データの取得中に取得した心電図データを受信するステップ、並びに
前記画像表現及び前記少なくとも1つの血管造影図を生成する前に、選択した心臓の動きの状態に従って、前記CT及び核投影データを同期するステップ
をさらに有する請求項1に記載の方法。 - 請求項1乃至7の何れか一項に記載の方法を行うように1つ以上の処理器を制御するためのソフトウェアを実行するコンピュータ読取可能媒体。
- 検査領域から造影CT投影データを、横方向にオフセットしたフラットパネル検出器を用いて取得するX線スキャナ、
1つ以上の造影血管を含む視野を選択するためのグラフィカルユーザインタフェース、
前記取得したCT投影データから、前記選択した視野の3Dの減衰補正マップと、3Dの血管画像表現及び少なくとも1つの平面血管造影図の少なくとも1つとを生成するCT再構成処理器であって、3Dボリューム表現において前記造影血管をセグメント化する処理と、前記セグメント化した造影血管を背景強度データと置き換える処理と、前記造影血管が取り除かれ、背景強度データと置き換えられた、前記CT投影データに基づく3Dの減衰補正マップを生成する処理とを行うCT再構成処理器、
前記検査領域から核投影データを取得する核撮像スキャナ、並びに
前記取得した核投影データを前記生成した減衰補正マップに基づいて補正し、前記補正した核投影データに基づいて、前記取得した核投影データから前記選択した視野の核画像表現を生成するようにプログラムされる核再構成処理器、
を有する、画像診断システム。 - 前記CT再構成処理器は、
前記選択した視野において前記造影血管を強調し、背景情報を除去するために前記取得したCT投影データをフィルタリングする、及び
前記フィルタリングした投影データから、前記視野の3Dの血管画像表現を再構成する、
ようにプログラムされる、請求項9に記載の画像診断システム。 - 前記CT再構成処理器はさらに、
前記フィルタリングした投影データ及び前記再構成した3Dの血管画像表現の少なくとも1つを動きに対し補正する
ようにさらにプログラムされる、請求項10に記載の画像診断システム。 - 前記再構成は、正則化因子、冗長性重み係数及び小さな更新ステップの少なくとも1つを用いた反復的な再構成アルゴリズムを用いて行われる、請求項10及び11の何れか一方に記載の画像診断システム。
- 前記CT再構成処理器は、
前記選択した視野において前記血管を強調するために前記取得した投影データをフィルタリングする、
各々の投影角度に対し、第1の2Dの打ち切りのある血管造影図及び第2の2Dの打ち切りのある血管造影図を生成し、前記第2の2Dの打ち切りのある血管造影図は、類似する心臓の動きの状態の間に、所与の投影角度から略180°反対向きの投影角度を持ち、並びに
前記第1及び第2の2Dの打ち切りのある血管造影図を融合することにより、各々の投影角度に対する2Dの合成血管造影図を生成する
ようにプログラムされる、請求項9乃至12の何れか1項に記載の画像診断システム。 - 前記核画像表現、前記3Dの血管画像表現及び前記少なくとも1つの平面血管造影図を組み合わせて合成画像にする融合処理器、並びに
前記核画像表現、前記3Dの血管画像表現、前記少なくとも1つの平面血管造影図、前記合成画像又は上記の何れかの組み合わせを表示するグラフィカルユーザインタフェース
をさらに有する、請求項9に記載の画像診断システム。 - 前記CT取得データ及び前記核投影データの取得中に心電図データを取得し、並びに
前記画像表現及び前記少なくとも1つの血管造影図を生成する前に、選択した心臓の動きの状態に従って前記CT及び核投影データを同期する
心電図装置をさらに有する請求項9に記載の画像診断システム。
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US201161453565P | 2011-03-17 | 2011-03-17 | |
US61/453,565 | 2011-03-17 | ||
PCT/IB2012/051183 WO2012123896A2 (en) | 2011-03-17 | 2012-03-13 | Multiple modality cardiac imaging |
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JP2014517713A JP2014517713A (ja) | 2014-07-24 |
JP2014517713A5 JP2014517713A5 (ja) | 2015-04-16 |
JP5872593B2 true JP5872593B2 (ja) | 2016-03-01 |
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EP (1) | EP2685899B1 (ja) |
JP (1) | JP5872593B2 (ja) |
CN (1) | CN103458790A (ja) |
RU (1) | RU2013146328A (ja) |
WO (1) | WO2012123896A2 (ja) |
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- 2012-03-13 RU RU2013146328/14A patent/RU2013146328A/ru not_active Application Discontinuation
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Publication number | Publication date |
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EP2685899B1 (en) | 2015-05-20 |
RU2013146328A (ru) | 2015-04-27 |
WO2012123896A3 (en) | 2012-11-15 |
CN103458790A (zh) | 2013-12-18 |
WO2012123896A2 (en) | 2012-09-20 |
US20140003688A1 (en) | 2014-01-02 |
EP2685899A2 (en) | 2014-01-22 |
JP2014517713A (ja) | 2014-07-24 |
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