JP7299998B2 - 心臓周波数現象を抽出する方法、光学系のシステム、コンピュータプログラム製品 - Google Patents
心臓周波数現象を抽出する方法、光学系のシステム、コンピュータプログラム製品 Download PDFInfo
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Description
本出願は、2019年4月4日に出願された米国仮特許出願第62/829290号に対して優先権を主張し、参照によりその全体が本出願に組み込まれる。
Claims (20)
- 患者の心臓の毎分の心拍数である心臓周波数よりも速い速度で光学系により得られた一連の光学画像から、心臓周波数に起こる1つ以上の物理的変化である心臓周波数現象を抽出する方法であって、
血管造影のための装置が、
心臓周波数よりも速い速度で得られた患者の時系列化された一連の光学画像を取得すると共に、前記時系列化された一連の画像が、化学造影剤の投与なしに一連の光学画像に補足され得る、1つ以上の患者の循環系の物理的特性である、内在する造影剤の1つ以上の物理的特性を捕捉することと、
測定または推定された心臓周波数信号を、前記時系列化された一連の光学画像とは独立して前記患者から取得することと、
前記時系列化された一連の光学画像に対して、相互相関ウェーブレット変換解析を適用して、前記心臓周波数現象の時空間的表現を生成することと、を含み、前記相互相関ウェーブレット変換解析は、
前記時系列化された一連の光学画像をウェーブレット変換してウェーブレット変換された信号を得ることと、
前記ウェーブレット変換された信号を前記患者から取得した前記心臓周波数信号と相互相関させて相互相関信号を得ることと、
前記相互相関信号を心臓周波数でフィルタリングしてフィルタリングされた信号を得ることと、
前記フィルタリングされた信号を逆ウェーブレット変換して、前記時系列化された一連の光学画像の時空間的表現を得ることと、
前記時系列化された一連の光学画像の時空間的表現から前記心臓周波数現象の画像を生成することと、を含む方法。 - 1つ以上の再構成された画像に時空間的再構成を表示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と前記ウェーブレット変換された信号とを相互相関させることをさらに含む、請求項1に記載の方法。
- 前記画像が、光学顕微鏡、近赤外顕微鏡、超音波、またはドップラー技術によって得られる、請求項1に記載の方法。
- 前記画像が、血管構造を有する身体を撮像することから得られる、請求項1に記載の方法。
- 内在する造影剤が、熱放射、光学的反射、または自家蛍光を含む、請求項1に記載の方法。
- 前記再構成された血管造影画像がシネビデオシーケンスとして提供される、請求項1に記載の方法。
- 静脈内注入された化学造影剤を有する第2の時系列化された一連の画像を取得し、前記静脈内注入された化学造影剤から得られた前記画像の第2の時空間表現を生成することと、
前記静脈内注入された化学造影剤から得られた前記画像の前記第2の時空間的表現と内在する造影剤で得られた前記画像の前記時空間的表現をペアリングすることと、
前記ペアリングに基づいて内在する造影剤で得られた前記画像の前記時空間的表現を較正することと、
をさらに含む、請求項1に記載の方法。 - 患者の心臓の毎分の心拍数である心臓周波数よりも速い速度で得られた、心臓周波数に起こる1つ以上の物理的変化である心臓周波数現象を抽出するための光学系のシステムであって、前記システムが、
1つ以上のコンピュータプロセッサと、
1つ以上のコンピュータ可読記憶媒体と、
前記1つ以上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の前記1つ以上のコンピュータ可読記憶媒体に記憶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患者の時系列化された一連の光学画像を取得すると共に、前記時系列化された一連の画像は、化学造影剤の投与なしに一連の光学画像に補足され得る、1つ以上の患者の循環系の物理的特性である、内在する造影剤の1つ以上の物理的性質を捕捉して、
測定または推定された心臓周波数信号を、前記時系列化された一連の光学画像とは独立して前記患者から取得して、
前記時系列化された一連の光学画像に対して、相互相関ウェーブレット変換解析を適用して、前記心臓周波数現象の時空間的表現を生成するための前記命令を含み、前記相互相関ウェーブレット変換解析は、
前記時系列化された一連の光学画像をウェーブレット変換してウェーブレット変換された信号を得ることと、
前記ウェーブレット変換された信号を前記患者から取得した前記心臓周波数信号と相互相関させて相互相関信号を得ることと、
前記相互相関信号を心臓周波数でフィルタリングしてフィルタリングされた信号を得ることと、
前記フィルタリングされた信号を逆ウェーブレット変換して、前記時系列化された一連の光学画像の時空間的表現を得ることと、
前記時系列化された一連の光学画像の時空間的表現から前記心臓周波数現象の画像を生成することと、を含むシステム。 - 前記プログラム命令は、1つ以上の再構成された画像に時空間的再構成を表示するための命令をさらに含む、請求項9に記載のシステム。
- 前記プログラム命令は、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と前記ウェーブレット変換された信号とを相互相関させるための命令をさらに含む、請求項9に記載のシステム。
- 前記画像が、光学顕微鏡、近赤外顕微鏡、超音波、またはドップラー技術によって得られる、請求項9に記載のシステム。
- 前記画像が、血管構造を有する身体を撮像することから得られる、請求項9に記載のシステム。
- 内在する造影剤が、熱放射、光学的反射、または自家蛍光を含む、請求項9に記載のシステム。
- 前記再構成された血管造影画像がシネビデオシーケンスとして提供される、請求項9に記載のシステム。
- 前記プログラム命令は、
静脈内注入された化学造影剤を有する第2の時系列化された一連の画像を取得し、前記静脈内注入された化学造影剤から得られた前記画像の第2の時空間表現を生成して、
前記静脈内注入された化学造影剤から得られた前記画像の前記第2の時空間的表現と内在する造影剤で得られた前記画像の前記時空間的表現とをペアリングして、
前記ペアリングに基づいて内在する造影剤で得られた前記画像の前記時空間的表現を較正する
ための命令をさらに含む、請求項9に記載のシステム。 - 患者の心臓の毎分の心拍数である心臓周波数よりも速い速度で得られた、心臓周波数に起こる1つ以上の物理的変化である心臓周波数現象を抽出するためのコンピュータプログラム製品であって、前記コンピュータプログラム製品は、具体化されたプログラム命令を集合的に有する1つ以上のコンピュータ可読記憶媒体を含み、前記プログラム命令は、コンピュータに、
心臓周波数よりも速い速度で得られた患者からの時系列化された一連の光学画像を取得させると共に、前記時系列化された一連の画像は、化学造影剤の投与なしに一連の光学画像に補足され得る、1つ以上の患者の循環系の物理的特性である、内在する造影剤の1つ以上の物理的性質を捕捉させて、
測定または推定された心臓周波数信号を、前記時系列化された一連の光学画像とは独立して前記患者から取得させて、
前記時系列化された一連の光学画像に対して、相互相関ウェーブレット変換解析を適用させて、前記心臓周波数現象の時空間的表現を生成させることを実行可能として、前記相互相関ウェーブレット変換解析は、
前記時系列化された一連の光学画像をウェーブレット変換してウェーブレット変換された信号を得ることと、
前記ウェーブレット変換された信号を前記患者から取得した前記心臓周波数信号と相互相関させて相互相関信号を得ることと、
前記相互相関信号を心臓周波数でフィルタリングしてフィルタリングされた信号を得ることと、
前記フィルタリングされた信号を逆ウェーブレット変換して、前記時系列化された一連の光学画像の時空間的表現を得ることと、
前記時系列化された一連の光学画像の時空間的表現から前記心臓周波数現象の画像を生成することと、を含むコンピュータプログラム製品。 - 前記プログラム命令は、1つ以上の再構成された画像に心臓周波数血管造影現象の時空間的再構成を表示する命令をさらに含む、請求項17に記載のコンピュータプログラム製品。
- 前記プログラム命令は、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と前記ウェーブレット変換された信号とを相互相関させる命令をさらに含む、請求項17に記載のコンピュータプログラム製品。
- 前記プログラム命令は、
静脈内注入された化学造影剤を有する第2の時系列化された一連の画像を取得し、前記静脈内注入された化学造影剤から得られた前記画像の前記第2の時空間表現を生成して、
前記静脈内注入された化学造影剤から得られた前記画像の前記第2の時空間的表現と内在する造影剤で得られた前記画像の前記時空間的表現とをペアリングして、
前記ペアリングに基づいて内在する造影剤で得られた前記画像の前記時空間的表現を較正する
命令をさらに含む、請求項17に記載のコンピュータプログラム製品。
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