JP6251267B2 - 光音響イメージングのための小型レーザ及び効率的なパルス送出 - Google Patents
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- A61B5/0095—Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy by applying light and detecting acoustic waves, i.e. photoacoustic measurements
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Description
r=[δ(2dt-2Lt’+δ)]1/2
により与えられる。ただし、δは組織の光の侵入度であり、dtは物体の中心から組織表面までの距離であり、Lt’は1つの輸送平均自由行路(transport mean free path)である。
Claims (15)
- 目標の波長でレーザパルスを出力するように構成された波長変換アセンブリと、
患者に音響結合し、前記パルスを向け、これに応じて光音響イメージングのための無線周波数データを取得するように構成された光音響プローブと
を有し、
前記プローブは、光ファイババンドルの少なくとも一部を有し、
前記少なくとも一部は、前記光音響イメージングの前記患者に入射するビームの最適なサイズに基づいて構成され、
前記サイズは、イメージングの深さと、前記イメージングの深さにおける前記光音響イメージングの経路の生体組織のそれぞれの光学的特性の複数の推定との関数である光音響医療用イメージングデバイス。 - 前記プローブは、横方向を有する超音波トランスデューサを有し、
前記一部は、前記トランスデューサの反対側から前記パルスを送出するために、2つの分岐に分けられ、前記2つの分岐のそれぞれは、前記方向に並列になるサブバンドルを有する、請求項1に記載のデバイス。 - 前記サブバンドルの中からの1つのサブバンドルは、伸長した構成で前記方向に平行になる、請求項2に記載のデバイス。
- 前記少なくとも一部は、単なる一部である、請求項1に記載のデバイス。
- 前記少なくとも一部は、全体の光ファイババンドルを含む、請求項1に記載のデバイス。
- 前記無線周波数データから前記光音響イメージングを導くように構成されたスキャナを更に有する、請求項1に記載のデバイス。
- 前記少なくとも一部を構成することは、前記光ファイババンドルの構成要素であるサブバンドルの出力開口のサイズを決定することを含む、請求項1に記載のデバイス。
- 前記少なくとも一部を構成することは、前記プローブ内で挿入距離の役目をする位置を決定することを含む、請求項1に記載のデバイス。
- 前記プローブは、面を有し、前記挿入距離は、前記面から前記光ファイババンドルの発光端までの距離である、請求項8に記載のデバイス。
- 前記一部は、それぞれのサブバンドルを有する分岐に分けられ、
前記挿入距離は、前記面から前記サブバンドルの中からの1つのサブバンドルの発光端までの距離である、請求項9に記載のデバイス。 - 前記サイズは、前記ビームの半径である、請求項1に記載のデバイス。
- 一体化された超音波及び光音響イメージングプローブを作る際に、光ファイババンドルの少なくとも一部を提供する方法であって、
イメージングの深さを選択するステップと、
媒体の光学的特性を推定するステップと、
前記イメージングの深さに適した光音響イメージングで使用されるレーザビームの発散レートを推定するステップと、
前記イメージングの深さにおける前記光音響イメージングの経路の生体組織の光学的特性に基づいて最適なビームサイズを計算するステップと、
前記計算された最適なビームサイズと、前記推定された発散レートとに基づいて、前記プローブ内の位置及び開口サイズのうち少なくとも1つを計算するステップと、
前記計算された開口サイズ及び前記計算された位置のうち少なくとも1つに基づいて前記少なくとも一部を構成するステップと
を有する方法。 - 前記計算するステップは、前記サイズ及び前記位置の双方を計算することを有し、
前記構成するステップは、前記計算されたサイズ及び前記計算された位置の双方に基づく、請求項12に記載の方法。 - 前記プローブに面を提供するステップを更に有し、
前記位置は、前記面からの挿入としての役目をする、請求項12に記載の方法。 - 前記サイズは、前記ビームの半径である、請求項12に記載の方法。
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PCT/IB2013/056632 WO2014027316A2 (en) | 2012-08-14 | 2013-08-14 | Compact laser and efficient pulse delivery for photoacoustic imaging |
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JP6251267B2 true JP6251267B2 (ja) | 2017-12-20 |
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JP (1) | JP6251267B2 (ja) |
CN (1) | CN105050485B (ja) |
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WO2008039988A2 (en) * | 2006-09-28 | 2008-04-03 | The Florida International University Board Of Trustees | Hand-held optical probe based imaging system with 3d tracking facilities |
CN101594819B (zh) * | 2006-11-08 | 2012-05-30 | 光学实验室成像公司 | 光声成像装置和方法 |
US9528966B2 (en) * | 2008-10-23 | 2016-12-27 | Washington University | Reflection-mode photoacoustic tomography using a flexibly-supported cantilever beam |
CN101813672B (zh) * | 2010-03-30 | 2014-12-10 | 华南师范大学 | 一种基于面阵超声探测器的快速三维光声成像系统及方法 |
US20130190591A1 (en) * | 2010-04-30 | 2013-07-25 | Desmond Hirson | Photoacoustic transducer and imaging system |
JP2012135610A (ja) * | 2010-12-10 | 2012-07-19 | Fujifilm Corp | 光音響検査用探触子および光音響検査装置 |
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2013
- 2013-08-14 CN CN201380042947.2A patent/CN105050485B/zh active Active
- 2013-08-14 US US14/431,962 patent/US20150272444A1/en not_active Abandoned
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JP2015524730A (ja) | 2015-08-27 |
US20200253481A1 (en) | 2020-08-13 |
WO2014027316A2 (en) | 2014-02-20 |
US20150272444A1 (en) | 2015-10-01 |
EP2884886A2 (en) | 2015-06-24 |
CN105050485B (zh) | 2017-08-18 |
CN105050485A (zh) | 2015-11-11 |
WO2014027316A3 (en) | 2014-05-30 |
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