JP6129831B2 - 超音波ビームフォーマの対象姿勢に基づく初期化 - Google Patents
超音波ビームフォーマの対象姿勢に基づく初期化 Download PDFInfo
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Description
ti,P=d(i,P)/c (式1)
であり、ここで、d(i,P)は、素子iと受信器Pとの間の距離であり、cは、前記媒体内の音速である。このように、ri,P(t)は、ti,Pにおいて最大値を持つ。空間内の前記受信器の画像は、視野内の各点Qに対して、i=1ないしNにわたり合計、
s(Q)=Σri,P(ti,Q) (式2)
を取ることにより形成される。
ti,P=d(i,P)/c (式3)
である。送信されたビームが前記仮想アレイ素子の位置に集束するのにかかる時間は、
ti=d(i)/c (式3)
であり、ここでd(i)は、前記撮像アレイのアクティブ開口の中心と送信ビームiの焦点(すなわち、仮想トランスデューサi)との間の距離である。通常の送信スキームにおいて、全ての送信は、同じ深さに集束され、d(i)は、iに依存せず、これをd1及び
t1=d(1)/c (式4)
と称する。ビームiの放射と点Pにおける対応するインパルスの受信との間の時間t1+ti,Pを取る。量ri,P(t)は、このように、t1+ti,Pにおいて最大値を持つ。
s(Q)=Σri,P(t1+ti,Q) (式2)
を取ることにより形成される。
Claims (15)
- 対象の位置及び向きの推定値を導出し、前記推定値を用いて、(i)前記対象を撮像するための器具特異的撮像フレームの取得を二方向ビーム形成による組織特異的撮像フレームと交互に行う際に、及び(ii)器具姿勢推定及び前記器具特異的撮像フレームに対するビームフォーマ初期化に対する一方向ビーム形成による初期化フレームの同時取得の際に超音波トランスデューサアレイとともに動作するビームフォーマを初期化する装置において、前記推定値が、前記超音波トランスデューサアレイの外であり、前記位置及び向きを感知するように前記対象に対して配置される少なくとも1つのセンサの出力に基づく、装置。
- 前記推定値が、反射された超音波により到着するデータに基づく撮像の結果を必要とせずに作成される、請求項1に記載の装置。
- 前記装置が、前記少なくとも1つのセンサを有し、前記少なくとも1つのセンサのうち1つ又は複数のセンサが、前記対象に取り付けられる、請求項1に記載の装置。
- 前記対象が、細長いボディを持ち、前記少なくとも1つのセンサが、前記ボディの少なくとも一部に適合し、前記向きを決定する際に前記一部の形状を感知する、請求項1に記載の装置。
- 前記装置が、前記少なくとも1つのセンサを有し、前記少なくとも1つのセンサのうち1つ又は複数のセンサが、超音波センサである、請求項1に記載の装置。
- 前記対象が器具を有し、前記器具が、堅く、基部を持ち、前記装置が、前記少なくとも1つのセンサを有し、前記少なくとも1つのセンサのうち1つ又は複数のセンサが、前記導出を可能にするように前記基部を光学的に検出する、請求項1に記載の装置。
- 前記装置が、前記ビームフォーマを有し、前記ビームフォーマが、サイドローブ及び反射アーチファクトを軽減するように、送信ビーム、受信ビーム又は両方の入射角度を非ゼロ値に制限する、請求項1に記載の装置。
- 前記ビームフォーマが、前記推定値に基づいて、前記対象に送信焦点を配置する、請求項1に記載の装置。
- 前記推定値が、前記位置及び前記向きのものであり、前記対象が細長く、前記ビームフォーマが、前記推定値に基づいて、前記対象に適合するように異なる深度において前記対象に沿って複数の送信焦点を配置し、前記焦点が、前記複数の送信焦点の中にある、請求項8に記載の装置。
- 前記対象が細長い対象であり、前記ビームフォーマが、仰角方向においてステアリング機能を持ち、前記初期化は、前記対象の少なくとも先端が長手方向に延在する撮像面を形成することに向けられる、請求項1に記載の装置。
- 前記少なくとも先端が、現在、他の撮像面内で長手方向に延在し、前記2つの撮像面が、相互に非平行であり、前記ビームフォーマが、リアルタイムで同時表示に対して両方の面を撮像する、請求項10に記載の装置。
- 前記対象が細長い対象であり、前記ビームフォーマが、前記対象のそれぞれの画像内の前記対象に沿った妨害として認識可能な撮像アーチファクトを軽減又は除去するのに十分に空間的に細かいビーム間隔に対して構成される、請求項1に記載の装置。
- 前記対象を追跡するようにリアルタイムで、前記導出を実行し、前記ビームフォーマによりビーム形成する、請求項1に記載の装置。
- 対象の視覚化を向上させるビーム形成方法において、
前記視覚化を向上させるために、前記対象の位置及び向きの推定値を用いて、(i)前記対象を撮像するための器具特異的撮像フレームの取得を二方向ビーム形成による組織特異的撮像フレームと交互に行う際に、及び(ii)器具姿勢推定及び前記器具特異的撮像フレームに対するビームフォーマ初期化に対する一方向ビーム形成による初期化フレームの同時取得の際に、超音波トランスデューサアレイとともに動作するビームフォーマを初期化するステップであって、前記推定値が、前記超音波トランスデューサアレイの外であり、前記位置及び向きを感知するために前記対象に対して配置される少なくとも1つのセンサの出力に基づく、前記初期化するステップ、
を有する、方法。 - 対象の視覚化を向上させるコンピュータソフトウェアプロダクトにおいて、
前記視覚化を向上させるために、前記対象の位置及び向きの推定値を用いて、(i)前記対象を撮像するための器具特異的撮像フレームの取得を二方向ビーム形成による組織特異的撮像フレームと交互に行う際に、及び(ii)器具姿勢推定及び前記器具特異的撮像フレームに対するビームフォーマ初期化に対する一方向ビーム形成による初期化フレームの同時取得の際に超音波トランスデューサアレイとともに動作するビームフォーマを初期化する動作であって、前記推定値が、前記アレイの外であり、前記位置及び向きの少なくとも一方を感知するために前記対象に対して配置される少なくとも1つのセンサの出力に基づく、前記初期化する動作、
を実行するようにプロセッサにより実行可能な命令を含むコンピュータプログラムを具体化するコンピュータ可読媒体を有するプロダクト。
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US201161503695P | 2011-07-01 | 2011-07-01 | |
US61/503,695 | 2011-07-01 | ||
PCT/IB2012/053071 WO2013005123A1 (en) | 2011-07-01 | 2012-06-19 | Object-pose-based initialization of an ultrasound beamformer |
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JP2014518119A JP2014518119A (ja) | 2014-07-28 |
JP2014518119A5 JP2014518119A5 (ja) | 2015-07-09 |
JP6129831B2 true JP6129831B2 (ja) | 2017-05-17 |
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JP2014517997A Active JP6129831B2 (ja) | 2011-07-01 | 2012-06-19 | 超音波ビームフォーマの対象姿勢に基づく初期化 |
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US (1) | US10588595B2 (ja) |
EP (1) | EP2725984B1 (ja) |
JP (1) | JP6129831B2 (ja) |
CN (1) | CN103747743B (ja) |
MX (1) | MX338145B (ja) |
WO (1) | WO2013005123A1 (ja) |
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JP5889874B2 (ja) * | 2010-05-03 | 2016-03-22 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 介入器具に搭載される超音波トランスデューサの超音波トラッキング |
WO2013134782A1 (en) | 2012-03-09 | 2013-09-12 | The Johns Hopkins University | Photoacoustic tracking and registration in interventional ultrasound |
BR112015023702A2 (pt) * | 2013-03-15 | 2017-07-18 | Colibri Tech Inc | método para localizar um dispositivo intercorporal secundário, sistema de formação de imagem ultrassônica intercorporal, e, transdutor ultrassônico |
JP6464173B2 (ja) | 2013-09-19 | 2019-02-06 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 高線量率短距離放射線療法システム |
US10939881B2 (en) | 2014-06-17 | 2021-03-09 | Koninklijke Philips N.V. | Guidance device for a tee probe |
US9945946B2 (en) | 2014-09-11 | 2018-04-17 | Microsoft Technology Licensing, Llc | Ultrasonic depth imaging |
TWI683121B (zh) * | 2014-10-07 | 2020-01-21 | 美商蝴蝶網路公司 | 超音波信號處理電路系統以及相關的設備和方法 |
US9844360B2 (en) * | 2014-10-27 | 2017-12-19 | Clear Guide Medical, Inc. | System and devices for image targeting |
CN107106119A (zh) * | 2014-10-30 | 2017-08-29 | 皇家飞利浦有限公司 | 弯曲结构的超声可视化 |
US10869650B2 (en) | 2014-11-06 | 2020-12-22 | Covidien Lp | System for tracking and imaging a treatment probe |
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