JP2022527153A - 血管造影データにおける心臓周波数現象の再構成 - Google Patents
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Abstract
Description
本出願は、2019年3月27日に提出され、その内容の全体が本願明細書に組み込まれている米国仮出願番号62/824,582に対して優先権を主張する。
Claims (25)
- 心臓周波数よりも速い速度で得られた血管造影研究からデータを取得または受信し、
心臓周波数バンドパスフィルタを前記血管造影データに適用して、心臓周波数血管造影現象の時空間的再構成を生成し、
前記心臓周波数血管造影現象の前記時空間的再構成を1つまたは複数の画像に表示する、
心臓周波数よりも速い速度で得られた血管造影研究から心臓周波数血管造影現象を抽出するための方法。 - 前記心臓周波数バンドパスフィルタを適用して、映画の一連の血管造影画像から前記心臓周波数血管造影現象を抽出する、請求項1に記載の方法。
- 前記心臓周波数バンドパスフィルタを適用することは、
前記血管造影画像内の各ピクセルの時間サンプルを別個の信号として処理すること、
前記心臓周波数バンドパスフィルタを前記ピクセル単位の信号に適用すること、
をさらに含む、請求項1に記載の方法。 - 同時に測定された心臓信号を取得し、前記同時に測定された心臓信号を相互相関ターゲットとして用いて、前記測定された心臓信号の前記周波数によって範囲が制限されたバンドパス心臓周波数フィルタを提供することをさらに含む、請求項1に記載の方法。
- 前記心臓周波数バンドパスフィルタが、グレースケールを用いた画像形式で表現される実数値フィルタ、あるいは、心臓周波数の大きさと心臓周波数の位相に基づいた画像形式で表現された複素数値フィルタ、の内の1つを含む、請求項1に記載の方法。
- 前記血管造影データにオイラー拡大を適用することをさらに含む、請求項1に記載の方法。
- 前記オイラー拡大を適用することは、
一連の血管造影画像に空間的分解を適用し、
前記一連の空間的に分解された血管造影画像に時間的フィルタを適用し、
前記2重に空間的に分解され時間的にフィルタリングされた一連の血管造影画像の1つまたは複数を選択的に拡大し、
前記選択的に拡大された一連の血管造影画像を前記一連の血管造影画像と組み合わせて結合された一連の血管造影画像とし、増幅された時空間的再構成の視覚化を可能にする、
ことを含む、請求項6に記載の方法。 - 前記空間的分解を適用することは、マルチスケール異方性フィルタリングを実行すること、あるいはシアレットまたはリッジレットのうちの1つを含む空間的変換を適用することをさらに含む、請求項7に記載の方法。
- 心臓周波数帯域に対応する時間的現象を含む、関心のある時間的および空間的現象を有する血管造影画像を選択することをさらに含む、請求項7に記載の方法。
- 前記空間的分解を適用することは、特定の空間周波数の空間構造に対するフィルタリングを含む、それぞれが異なる空間的特性を有するいくつかの画像への血管造影画像の空間的分解を実行することを含む、請求項7に記載の方法。
- 前記心臓周波数バンドパスフィルタが、前記心臓周波数帯域外の時間的現象に対してゼロの値が適用され、
拡大された空間的変換を有する前記心臓周波数現象を含む血管造影画像を再構成することをさらに含む、請求項7に記載の方法。 - 前記再構成された血管造影画像が一連の映画ビデオとして提供される、請求項11に記載の方法。
- 血管造影データを取得するためのX線源およびX線検出器と、
1つまたは複数のコンピュータプロセッサと、
1つまたは複数のコンピュータで読み取り可能な記憶媒体と、
前記1つまたは複数のコンピュータプロセッサのうちの少なくとも1つによる実行のために、前記1つまたは複数のコンピュータで読み取り可能な記憶媒体に格納されたプログラム命令と、を含み、
前記プログラム命令は、
心臓周波数よりも速い速度で得られた血管造影研究からデータを取得または受信する命令と、
心臓周波数バンドパスフィルタを前記血管造影データに適用して、心臓周波数血管造影現象の時空間的再構成を生成する命令と、
1つまたは複数の画像内の心臓周波数血管造影現象の前記時空間的再構成を表示する命令と、を含む
心臓周波数よりも速い速度で得られた心臓周波数血管造影現象を抽出するための血管造影システム。 - 前記心臓周波数バンドパスフィルタを適用して、一連の映画の血管造影画像から前記心臓周波数血管造影現象を抽出するプログラム命令をさらに含む、請求項13に記載のシステム。
- 前記血管造影画像内の各ピクセルの時間サンプルを別個の信号として処理し、
前記心臓周波数バンドパスフィルタを前記ピクセル単位の信号に適用するプログラム命令がさらに含む、請求項13に記載のシステム。 - 同時に測定された心臓信号を相互相関ターゲットとして用いて、前記測定された心臓信号の前記周波数によって範囲が制限されたバンドパス心臓周波数フィルタを提供することをさらに含む、請求項13に記載のシステム。
- 前記心臓周波数バンドパスフィルタが、グレースケールを用いた画像形式で表現された実数値フィルタのうちの1つ、あるいは、心臓周波数の大きさと心臓周波数の位相に基づいた画像形式で表現された複素数値フィルタを含む、請求項13に記載のシステム。
- プログラム命令が、前記血管造影データにオイラー拡大を適用するための命令をさらに含む、請求項13に記載のシステム。
- プログラム命令が、
空間的分解を一連の血管造影画像に適用し、
前記空間的に分解された一連の血管造影画像に時間的フィルタを適用して、2重に空間的に分解され時間的にフィルタリングされた前記一連の血管造影画像の1つまたは複数を選択的に拡大し、
前記選択的に拡大された一連の血管造影画像を前記一連の血管造影画像と組み合わせて結合された一連の血管造影画像が、増幅された時空間的再構成の視覚化を可能にする命令をさらに含む、請求項18に記載のシステム。 - マルチスケール異方性フィルタリングを実行するためのプログラム命令、またはシアレットまたはリッジレットを用いて空間的変換を適用するプログラム命令をさらに含む、請求項19に記載のシステム。
- 心臓周波数帯域に対応する時間的現象を含む、関心のある時間的および空間的現象を有する血管造影画像を選択する命令をさらに含む、請求項19に記載のシステム。
- 血管造影画像を、特定の空間周波数の空間構造のためのフィルタリングを含む、それぞれが異なる空間的特性を有するいくつかの画像に空間的に分解することを実行する命令をさらに含む、請求項19に記載のシステム。
- 前記心臓周波数バンドパスフィルタが、前記心臓周波数帯域外の時間的現象に対してゼロの値が適用され、
拡大された空間的変換を有する前記心臓周波数現象を含む血管造影画像を再構成するための命令をさらに含む、請求項19に記載のシステム。 - 具体化されたプログラム命令を集合的に有する1つまたは複数のコンピュータ可読記憶媒体を含み、
コンピュータによって実行可能なプログラム命令は、
心臓周波数よりも速い速度で得られた血管造影研究からデータを取得または受信し、
心臓周波数バンドパスフィルタを前記血管造影データに適用して、心臓周波数血管造影現象の時空間的再構成を生成し、
心臓周波数血管造影現象の前記時空間的再構成を1つまたは複数の画像に表示する、
セマンティック分析を決定するためのコンピュータプログラム製品。 - コンピュータによって実行可能なプログラム命令が、前記コンピュータにオイラー拡大を前記血管造影データに適用させる、請求項24に記載のシステム。
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