JP2011147649A - 画像形成方法及び音響波測定装置 - Google Patents
画像形成方法及び音響波測定装置 Download PDFInfo
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- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
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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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- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0825—Detecting organic movements or changes, e.g. tumours, cysts, swellings for diagnosis of the breast, e.g. mammography
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- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0858—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving measuring tissue layers, e.g. skin, interfaces
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- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
- G01S7/52046—Techniques for image enhancement involving transmitter or receiver
- G01S7/52049—Techniques for image enhancement involving transmitter or receiver using correction of medium-induced phase aberration
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Abstract
【解決手段】 本発明の画像形成方法は、被検体に光を照射することにより発生する音響波を、前記被検体とは音速の異なる媒体を介して音響波受信器により受信して電気信号に変換し、前記電気信号を用いて画像データを生成する画像形成方法であって、先進グリーン関数を用いた積分計算により、前記電気信号から、前記被検体と前記媒体との境界又は前記境界より前記被検体側に設定した仮想受信点において音響波を受信した場合の電気信号を生成し、前記仮想受信点において音響波を受信した場合の電気信号を用いて画像データを生成する。
【選択図】 図4
Description
3 光導波路
4 光源
5 画像表示装置
6 信号処理装置
7 光吸収体から発生した音響波
8 光吸収体
9 音響波受信装置
10 圧迫板
11 被検体(生体)
Claims (8)
- 被検体に光を照射することにより発生する音響波を、前記被検体とは音速の異なる媒体を介して音響波受信器により受信して電気信号に変換し、前記電気信号を用いて画像データを生成する画像形成方法であって、
先進グリーン関数を用いた積分計算により、前記電気信号から、前記被検体と前記媒体との境界又は前記境界より前記被検体側に設定した仮想受信点において音響波を受信した場合の電気信号を生成し、
前記仮想受信点において音響波を受信した場合の電気信号を用いて画像データを生成することを特徴とする画像形成方法。 - 前記仮想受信点を等間隔に設定することを特徴とする請求項1に記載の画像形成方法。
- 前記仮想受信点において音響波を受信した場合の電気信号を用いてフーリエドメイン法により画像データを生成することを特徴とする請求項1又は2に記載の画像形成方法。
- 前記仮想受信点において音響波を受信した場合の電気信号を用いてタイムドメイン法により画像データを生成することを特徴とする請求項1又は2に記載の画像形成方法。
- 被検体に光を照射することにより発生する音響波を受信し電気信号に変換する音響波受信器と、前記被検体と前記音響波受信器との間に設けられた前記被検体とは音速の異なる媒体と、前記電気信号を用いて画像データを生成する信号処理装置と、を備える音響波測定装置であって、
前記信号処理装置は、
先進グリーン関数を用いた積分計算により、前記電気信号から、前記被検体と前記媒体との境界又は前記境界より前記被検体側に設定した仮想受信点において音響波を受信した場合の電気信号を生成し、前記仮想受信点において音響波を受信した場合の電気信号を用いて画像データを生成することを特徴とする音響波測定装置。 - 前記信号処理装置は、前記仮想受信点を等間隔に設定することを特徴とする請求項5に記載の音響波測定装置。
- 前記信号処理装置は、前記仮想受信点において音響波を受信した場合の電気信号を用いてフーリエドメイン法により画像データを生成することを特徴とする請求項5又は6に記載の音響波測定装置。
- 前記仮想受信点において音響波を受信した場合の電気信号を用いてタイムドメイン法により画像データを生成することを特徴とする請求項5又は6に記載の音響波測定装置。
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JP2010012192A JP5419727B2 (ja) | 2010-01-22 | 2010-01-22 | 画像形成方法及び音響波測定装置 |
EP11150553A EP2347704A1 (en) | 2010-01-22 | 2011-01-11 | Acoustic wave measuring system and method of generating image data thereof |
US13/009,699 US8611179B2 (en) | 2010-01-22 | 2011-01-19 | Acoustic wave measuring system and method of generating image data thereof |
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JP2010012192A JP5419727B2 (ja) | 2010-01-22 | 2010-01-22 | 画像形成方法及び音響波測定装置 |
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JP2011147649A true JP2011147649A (ja) | 2011-08-04 |
JP2011147649A5 JP2011147649A5 (ja) | 2013-03-07 |
JP5419727B2 JP5419727B2 (ja) | 2014-02-19 |
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EP (1) | EP2347704A1 (ja) |
JP (1) | JP5419727B2 (ja) |
Cited By (1)
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JP2015027445A (ja) * | 2013-06-26 | 2015-02-12 | キヤノン株式会社 | 被検体情報取得装置、信号処理方法及びプログラム |
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CN104053402B (zh) * | 2012-01-18 | 2017-04-19 | 佳能株式会社 | 被检体信息获得设备和关于被检体的信息的获得方法 |
CN105869191B (zh) * | 2016-03-25 | 2018-10-12 | 电子科技大学 | 一种基于时域有限差分的时间反演光声图像重建方法 |
KR20180102771A (ko) * | 2017-03-08 | 2018-09-18 | 목포해양대학교 산학협력단 | 음향 탐지장치 |
ES2915923B2 (es) * | 2020-12-24 | 2023-10-11 | Univ Girona | Procedimiento de proyeccion de un haz de luz puntual sobre una superficie final de proyeccion y procedimiento de escaneo correspondiente |
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JPS60103944A (ja) * | 1983-11-10 | 1985-06-08 | 株式会社東芝 | 超音波検査装置 |
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US4835689A (en) * | 1987-09-21 | 1989-05-30 | General Electric Company | Adaptive coherent energy beam formation using phase conjugation |
JP4711583B2 (ja) * | 1999-10-15 | 2011-06-29 | 株式会社日立メディコ | 超音波撮像装置 |
WO2008117121A2 (en) * | 2006-11-06 | 2008-10-02 | Magnitude Spas | System, method and computer program product for stacking seismic noise data to analyze seismic events |
US7508736B2 (en) * | 2007-03-09 | 2009-03-24 | Baker Hughes Incorporated | Vector migration of 1st order free-surface related downgoing multiples from VSP data |
JP5201920B2 (ja) * | 2007-09-12 | 2013-06-05 | キヤノン株式会社 | 測定装置 |
JP5132228B2 (ja) * | 2007-09-12 | 2013-01-30 | キヤノン株式会社 | 測定方法及び測定装置 |
JP5296414B2 (ja) * | 2008-05-21 | 2013-09-25 | 富士フイルム株式会社 | 医用撮像装置 |
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JP2009031268A (ja) * | 2007-06-29 | 2009-02-12 | Canon Inc | 超音波探触子、該超音波探触子を備えた検査装置 |
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Cited By (1)
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JP2015027445A (ja) * | 2013-06-26 | 2015-02-12 | キヤノン株式会社 | 被検体情報取得装置、信号処理方法及びプログラム |
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US20110182136A1 (en) | 2011-07-28 |
JP5419727B2 (ja) | 2014-02-19 |
US8611179B2 (en) | 2013-12-17 |
EP2347704A1 (en) | 2011-07-27 |
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