JP6162094B2 - 超音波高調波撮像のためのシステム - Google Patents
超音波高調波撮像のためのシステム Download PDFInfo
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Description
以下に、本願出願時の特許請求の範囲に記載された発明を付記する。
[1]ターゲットの関心領域から反射される超音波エネルギを受け、複数のエコー信号を生成する超音波トランシーバと、
ディスプレイを有し、超音波エネルギの第1高調波、第2高調波、および基本周波数の少なくとも1つを使用してエコー信号からターゲットの関心領域を撮像するように構成される実行可能なアルゴリズムを有するコンピュータとを具備し、
ターゲットの関心領域内の境界インターフェースの区分はディスプレイ上で表示される超音波画像の写像性を改良するシステム。
[2]実行可能なアルゴリズムは高調波解析カーネルを含んでいる前記[1]に記載のシステム。
[3]高調波解析カーネルは高調波値を発生するためにウィンドウプロセス、高速度フーリエ変換プロセス、平均プロセス、強度正規化プロセス、深さによる補償プロセス、高調波平滑プロセスを含んでいる前記[2]記載のシステム。
[4]高調波値は関心領域のグラフィック表示のために使用される前記[3]に記載のシステム。
[5]グラフィック表示は関心領域のコード化マップを含んでいる前記[4]に記載のシステム。
[6]関心領域のコード化マップは高調波値の大きさに割当てられた色を含んでいる前記[5]に記載のシステム。
[7]主体の関心領域へ超音波エネルギを送信し、
関心領域から反射される超音波エコーを集収してエコー信号に変換し、
信号関連情報を発生するためにコンピュータが実行可能な非母数アルゴリズムを使用してエコー信号を処理し、
信号関連情報を使用して関心領域内の境界表面インターフェースを撮像するステップを含んでいる超音波トランスデューサからの超音波画像の写像性を改良する方法。
[8]非母数の実行可能なアルゴリズムの適用は高調波解析カーネルの適用を含んでいる前記[7]に記載の方法。
[9]高調波解析カーネルの適用は、高調波値を発生するためにウィンドウ処理、高速度フーリエ変換処理、平均処理、強度正規化処理、深さによる補償処理、高調波平滑処理を含んでいる前記[8]に記載の方法。
[10]関心領域の撮像は高調波値の大きさにより関心領域のコード化描写の表示を含んでいる前記[9]に記載の方法。
[11]関心領域のコード化描写の表示はカラーコード化を含んでいる前記[10]に記載の方法。
Claims (7)
- 患者のターゲットの関心領域に、基本周波数を有する超音波エネルギの複数のパルスを送信し、前記患者の前記ターゲットの関心領域から反射される超音波エネルギを受け、複数のエコー信号を発生する超音波トランシーバと、
ディスプレイを有し、前記患者の前記ターゲットの関心領域を通る前記超音波エネルギの前記基本周波数の前記複数のパルスの伝播期間中の非線形効果によって発生される第1高調波と第2高調波を使用して、前記複数のエコー信号から、前記患者の前記ターゲットの関心領域を撮像し、前記第1高調波と前記第2高調波に基づいて、前記患者の前記ターゲットの関心領域内の特定の器官の位置を前記ディスプレイ上に表示するように構成されるコンピュータと、を具備し、
前記コンピュータは、実行されたとき、前記コンピュータに、
前記複数のエコー信号を複数のデータセグメントに細分割し、
各データセグメントについて、前記第1高調波についてのスペクトル強度の第1の平均と前記第2高調波についてのスペクトル強度の第2の平均を発生するために、前記各データセグメントを独立して処理し、
前記各データセグメントについて、前記第1高調波の前記第1の平均の前記第2高調波の前記第2の平均に対する高調波の比を計算し、
前記高調波の比が前記患者の前記ターゲットの関心領域内の前記特定の器官の位置を示すように、前記第1高調波に関して正規化された前記複数のデータセグメントの各々についての高調波値を発生するために、前記複数のデータセグメントを通じて前記高調波の比を正規化する、
ようにさせる信号処理ブロックを含む、超音波画像の写像性を改良するシステム。 - 前記コンピュータは、
前記各データセグメントについて前記第1高調波の前記第1の平均と前記第2高調波の前記第2の平均の発生のために、
エッジの不連続性を示す前記エコー信号に共通の主ローブ幅とサイドローブレベルとの間で計算的調節を可能にするウィンドウアルゴリズムを利用するために、前記エコー信号に一連の数値加重を適用することと、
前記第1高調波の前記スペクトル強度と前記第2高調波の前記スペクトル強度を発生するために、高速度フーリエ変換プロセスを行うことと、
を含む高調波解析カーネル信号処理アルゴリズムを前記コンピュータに実行させる信号処理ブロックを含んでいる、請求項1記載のシステム。 - 前記信号処理ブロックは、
前記信号処理ブロックは、高調波値を発生するために、
前記エコー信号に一連の数値加重を適用するためのウィンドウプロセス、
前記第1高調波の前記スペクトル強度と前記第2高調波の前記スペクトル強度を発生するための高速度フーリエ変換プロセス、
前記各データセグメントについて、前記第1高調波についてのスペクトル強度の第1の平均と前記第2高調波についてのスペクトル強度の第2の平均を発生するための平均プロセス、
前記各データセグメントについて、前記第1高調波の前記第1の平均の前記第2高調波の前記第2の平均に対する前記高調波の比を計算するための強度の正規化プロセス、
予測される減衰が前記エコー信号に生じるという予測により前記高調波の比を補償する補償プロセス、および、
前記複数のデータセグメントを通して前記高調波の比を平滑化するための高調波平滑プロセス、
を含んでいる前記高調波解析カーネル信号処理アルゴリズムを前記コンピュータに実行させる、請求項2記載のシステム。 - 前記高調波値は、前記関心領域のグラフィック表示のために使用される、請求項3記載のシステム。
- 前記グラフィック表示は、前記関心領域のコード化マップを含んでいる、請求項4記載のシステム。
- 前記関心領域の前記コード化マップは、前記高調波値の大きさに割当てられた色を含んでいる、請求項5記載のシステム。
- 患者の器官を評価するシステムであり、前記システムは、
前記患者の前記器官に基本周波数を有する少なくとも1つのパルスを送信し、前記パルスに対応する少なくとも1つのエコー信号を受信するように構成される超音波トランシーバと、
前記超音波トランシーバに結合された信号処理デバイスと、
を備え、
ここで、前記信号処理デバイスは、
前記少なくとも1つのエコー信号を複数のデータセグメントに細分割し、
前記基本周波数の第1高調波についての第1の平均と、前記基本周波数の第2高調波についての第2の平均とを発生するために、前記複数のデータセグメントの各データセグメントを独立して処理し、
前記各データセグメントについて、前記第1高調波の前記第1の平均の前記第2高調波の前記第2の平均に対する高調波比を計算し、
前記第1高調波に関して正規化された前記複数のデータセグメントの各々についての高調波値を発生するために、前記複数のデータセグメントを通じて前記高調波比を正規化し、
計算された前記第1の平均および前記第2の平均から得られる前記高調波値に基づいて前記患者の前記器官の画像を発生する、
ように構成される、システム。
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US93844607P | 2007-05-16 | 2007-05-16 | |
US93835907P | 2007-05-16 | 2007-05-16 | |
US93837107P | 2007-05-16 | 2007-05-16 | |
US60/938,446 | 2007-05-16 | ||
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US60/938,371 | 2007-05-16 |
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JP2010508594A Pending JP2010527277A (ja) | 2007-05-16 | 2008-05-15 | 高調波撮像を使用する膀胱検出システム及び方法 |
JP2014208346A Expired - Fee Related JP6162094B2 (ja) | 2007-05-16 | 2014-10-09 | 超音波高調波撮像のためのシステム |
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JP2010508594A Pending JP2010527277A (ja) | 2007-05-16 | 2008-05-15 | 高調波撮像を使用する膀胱検出システム及び方法 |
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EP (2) | EP2155067B1 (ja) |
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EP2155068A1 (en) | 2010-02-24 |
CA2688758C (en) | 2016-07-05 |
JP5632278B2 (ja) | 2014-11-26 |
EP2155068A4 (en) | 2010-06-16 |
EP2155068B1 (en) | 2016-12-21 |
EP2155067A4 (en) | 2010-06-23 |
WO2008144449A2 (en) | 2008-11-27 |
WO2008144449A3 (en) | 2009-12-30 |
JP2010527278A (ja) | 2010-08-12 |
US20090105585A1 (en) | 2009-04-23 |
EP2155067A2 (en) | 2010-02-24 |
CA2688778C (en) | 2020-04-14 |
JP2015042279A (ja) | 2015-03-05 |
EP2155067B1 (en) | 2016-01-06 |
JP2010527277A (ja) | 2010-08-12 |
CA2688758A1 (en) | 2008-11-27 |
CA2688778A1 (en) | 2008-11-27 |
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