JP6129744B2 - バックグランド動き効果に関する音響放射力効果の測定の調整 - Google Patents
バックグランド動き効果に関する音響放射力効果の測定の調整 Download PDFInfo
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Description
Claims (12)
- せん断波解析のための超音波診断イメージングシステムであって、
せん断波を生成するために予め決められたベクトルに沿ってプッシュパルスを送信し、プッシュパルスベクトルに隣る追跡ラインに沿って追跡パルスを送信し、前記追跡ラインに沿ったポイントからエコー信号を受信する超音波アレイプローブと、
追跡ラインエコーデータを記憶するメモリと、
前記追跡ラインエコーデータに応じて、前記追跡ラインのロケーションを通過するせん断波を検出する動き検出器と、
前記検出されたせん断波の特性を表示するディスプレイと、
を有し、前記超音波アレイプローブは更に、前記プッシュパルスベクトルに隣る1又は複数のバックグラウンド動き追跡ラインに沿って送信を行うように構成され、前記バックグラウンド動き追跡ラインに沿ってバックグラウンド動きエコー信号がそれぞれ異なる時間に受信され、前記それぞれのバックグラウンド動きエコー信号が、せん断波の近傍のバックグラウンド動きを検知するために、比較される、超音波診断イメージングシステムにおいて、
前記バックグラウンド動き追跡ラインが前記プッシュパルスベクトルに沿って位置し、前記バックグラウンド動きが、前記プッシュパルスの焦点深さより上及び下に位置するポイントにおいて検知される、超音波診断イメージングシステム。 - それぞれ異なる時間に受信されるバックグラウンド動きエコー信号が、相関処理によって比較される、請求項1に記載の超音波診断イメージングシステム。
- バックグラウンド動き追跡ラインが、プッシュパルスベクトルの両側方に位置する、請求項1に記載の超音波診断イメージングシステム。
- プッシュパルスベクトルの少なくとも一方の側方に位置する、せん断波解析のための関心領域を更に有し、バックグラウンド動き追跡ラインが、前記関心領域に隣接して位置する、請求項1に記載の超音波診断イメージングシステム。
- プッシュパルスベクトルの少なくとも一方の側方に位置する、せん断波解析のための関心領域を更に有し、バックグラウンド動き追跡ラインが、前記関心領域に位置する、請求項1に記載の超音波診断イメージングシステム。
- 第2のバックグラウンド動き追跡ラインが、前記バックグラウンド動き追跡ラインに隣接して、前記関心領域に位置する、請求項5に記載の超音波診断イメージングシステム。
- 前記超音波アレイプローブは、トランスデューサ素子の2次元アレイを更に含み、前記バックグラウンド動きエコー信号は、前記プッシュパルスベクトル周辺の3次元空間に位置する、請求項1に記載の超音波診断イメージングシステム。
- 前記バックグラウンド動きエコー信号は、プッシュパルスベクトルを中心に90°間隔で受信される、請求項7に記載の超音波診断イメージングシステム。
- 前記トランスデユーサ素子の2次元アレイが更に、せん断波面の生成のために、プッシュパルスエネルギーのシートを生成するように構成され、バックグラウンド動きエコー信号が、せん断波面の前及び後ろで受信される、請求項7に記載の超音波診断イメージングシステム。
- せん断波測定及び検知されるバックグラウンド動きに応じて、検知されるバックグラウンド動きに合わせて前記せん断波測定を調整するように構成されるプロセッサを更に有する、請求項1に記載の超音波診断イメージングシステム。
- 組織領域において測定されたせん断波特性の測定を、組織と超音波プローブとの間の相対動きの効果に関して調整する方法であって、
前記組織領域においてせん断波を検出するために前記超音波プローブを使用するステップと、
1又は複数のバックグラウンド動き追跡ラインに沿って送信を行い、前記バックグラウンド追跡ラインに沿ってバックグラウンド動きエコー信号を受信するステップと、
異なる時間に受信されたバックグラウンド動きエコー信号を比較し、せん断波が検出される場合、時間間隔中の前記超音波プローブと前記組織領域との間の相対動きを検知するステップと、
前記相対動きに合わせて調整される前記せん断波の特性を生成するステップと、
を含む方法において、
前記超音波プローブを使用する前記ステップは、せん断波を生成するために、前記超音波プローブによりプッシュパルスを送信するステップを含み、
前記相対動きを検知する前記ステップは、前記プッシュパルスの近傍のバックグラウンド動きエコー信号をそれぞれ異なる時間に取得するステップと、バックグラウンド動きを検知するために、それぞれ異なる時間に取得されたバックグラウンド動きエコー信号を比較するステップと、を含み、
前記バックグラウンド動き追跡ラインが前記プッシュパルスベクトルに沿って位置し、バックグラウンド動きが、プッシュパルスの焦点深さより上及び下に位置するポイントにおいて検知される、方法。 - 前記バックグラウンド動きエコー信号の前記比較は、バックグラウンド動きエコー信号を相関付けることを含む、請求項11に記載の方法。
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US42247910P | 2010-12-13 | 2010-12-13 | |
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PCT/IB2011/055546 WO2012080913A1 (en) | 2010-12-13 | 2011-12-08 | Adjusting measurements of the effects of acoustic radiation force for background motion effects |
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JP (1) | JP6129744B2 (ja) |
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US10624609B2 (en) * | 2012-10-07 | 2020-04-21 | Mayo Foundation For Medical Education And Research | System and method for shear wave elastography by transmitting ultrasound with subgroups of ultrasound transducer elements |
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CN103908289B (zh) * | 2012-12-31 | 2019-11-12 | Ge医疗系统环球技术有限公司 | 消除剪切波中的背景噪声的方法和相应的超声成像系统 |
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WO2018046611A1 (en) * | 2016-09-12 | 2018-03-15 | Koninklijke Philips N.V. | Phase aberration correction in ultrasound shear wave elastography and associated devices, systems, and methods |
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