JP7366221B2 - 解剖学的、機能的及び血行動態イメージングのためのトリプルモード超音波イメージング - Google Patents
解剖学的、機能的及び血行動態イメージングのためのトリプルモード超音波イメージング Download PDFInfo
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Description
ここで、
であり、nはシーケンス内のサンプル数である。複素結果からのドップラ位相シフト
が、Q'とI'の商のアークタンジェントとして、すなわち、
と計算される。ドップラ周波数シフト
は、位相シフト
にPRF(フレーム取得レート周波数)を乗じて、2πで除算することによって決定される。
動きの速度は、f0を送信波形の中心周波数と仮定して、次式によってドップラ速度方程式から算出される。
の式によってパワードップラ値を推定し、パワードップラ値は次に、カラーLUT76によって対応するカラー値に変換される。画像フィールド内のロケーションにおけるドップラ信号の強度を表すこれらのカラー値は、パワードップラーフレームメモリ86に記憶される。メモリ86に記憶されたフレームは、ユーザが画像内の点の動きからドップラ信号の強度を評価したい場合に、構造(Bモード)画像の組織又は血流(又は両方)の上にオーバレイするために、ディスプレイプロセッサ36に結合される。ユーザが動いている組織のみ又は血流のみのパワードップラ強度を表示したい場合、パワードップラ信号は、ThAと同様の閾値を使用して振幅に関してセグメント化されることができる。
Claims (4)
- 少なくとも800Hzの高い取得フレームレートで複数の異なるモードの画像を生成する超音波イメージングシステムであって、
アレイトランスデューサを制御するように構成されるビームフォーマであって、前記ビームフォーマは、前記アレイトランスデューサに、前記高い取得フレームレートでエコー信号のフレームを取得させるように構成され、前記ビームフォーマは、前記アレイトランスデューサに、少なくとも1つの発散送信ビーム、平面波、又は非集束ビームで画像視野をスキャンさせるように構成される、ビームフォーマと、
前記高い取得フレームレートで取得されるエコー信号のフレームを記憶するように構成されるフレームメモリであって、前記フレームは、前記画像視野に対応するエコー信号を有する、フレームメモリと、
前記フレームメモリに結合され、前記画像視野に対応する前記エコー信号のフレームから3つの異なるモードの画像を生成するように構成される、3つの異なる画像プロセッサと
を有し、
前記3つの異なる画像プロセッサは、前記フレームメモリに記憶されたエコー信号の同じ共通のグループのエコー信号からのエコー信号を使用して、前記3つの異なるモードの画像を同時に生成し、
前記ビームフォーマは更に、一つの共通の送信パルスシーケンスを使用し、前記3つの異なる画像プロセッサ全てによって使用される前記共通の送信パルスシーケンスから生成されるエコー信号を受信するように構成され、前記取得されるフレームはコヒーレントに組み合わされる、
超音波イメージングシステム。 - 前記アレイトランスデューサを有する超音波プローブを更に有する、請求項1に記載の超音波イメージングシステム。
- 前記ビームフォーマが、発散送信ビームに応答して少なくとも32の受信マルチラインを生成するように構成されたマルチラインビームフォーマを有する、請求項1に記載の超音波イメージングシステム。
- 前記ビームフォーマに結合された入力部と前記フレームメモリに結合された出力部とを有する直交復調器を更に有する、請求項1に記載の超音波イメージングシステム。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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EP16306484 | 2016-11-14 | ||
EP16306484.3 | 2016-11-14 | ||
JP2019524305A JP7231541B2 (ja) | 2016-11-14 | 2017-11-14 | 解剖学的、機能的及び血行動態イメージングのためのトリプルモード超音波イメージング |
PCT/EP2017/079220 WO2018087400A1 (en) | 2016-11-14 | 2017-11-14 | Triple mode ultrasound imaging for anatomical, functional, and hemodynamical imaging |
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JP2022165948A Active JP7366221B2 (ja) | 2016-11-14 | 2022-10-17 | 解剖学的、機能的及び血行動態イメージングのためのトリプルモード超音波イメージング |
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US (1) | US11419581B2 (ja) |
EP (1) | EP3537980B1 (ja) |
JP (2) | JP7231541B2 (ja) |
CN (1) | CN109982643B (ja) |
WO (1) | WO2018087400A1 (ja) |
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Citations (6)
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JP2005348758A (ja) | 2004-06-08 | 2005-12-22 | Toshiba Corp | 超音波診断装置 |
JP2012110527A (ja) | 2010-11-25 | 2012-06-14 | Toshiba Corp | 超音波診断装置 |
US20130066207A1 (en) | 2010-05-26 | 2013-03-14 | Koninklijke Philips Electronics N.V. | High volume rate 3d ultrasonic diagnostic imaging of the heart |
JP2013094312A (ja) | 2011-10-31 | 2013-05-20 | Ge Medical Systems Global Technology Co Llc | 超音波診断装置及びその制御プログラム |
US20140039317A1 (en) | 2012-07-31 | 2014-02-06 | Toshiba Medical Systems Corporation | Ultrasound diagnosis apparatus and controlling method |
JP2014042823A (ja) | 2012-07-31 | 2014-03-13 | Toshiba Corp | 超音波診断装置及び制御方法 |
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US4644795A (en) | 1985-07-29 | 1987-02-24 | Advanced Technology Laboratories, Inc. | High resolution multiline ultrasonic beamformer |
JPH03224552A (ja) * | 1990-01-31 | 1991-10-03 | Toshiba Corp | 超音波診断装置 |
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