JP2013172810A5 - - Google Patents
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- JP2013172810A5 JP2013172810A5 JP2012038546A JP2012038546A JP2013172810A5 JP 2013172810 A5 JP2013172810 A5 JP 2013172810A5 JP 2012038546 A JP2012038546 A JP 2012038546A JP 2012038546 A JP2012038546 A JP 2012038546A JP 2013172810 A5 JP2013172810 A5 JP 2013172810A5
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図3は、図2のUSモードの各ラインに対応する開口素子で検出された反射音響信号を示し、図4は、再構成後の超音波画像を示す。図3において、縦軸は超音波送信からの経過時間を示している。各ライン64素子の反射音響信号(ただし端部では開口素子は64素子よりも少ない)を遅延加算(位相整合加算)することで、ライン1からライン128までの各ラインのデータが生成され、図4に示す1フレームの超音波画像を生成できる。 FIG. 3 shows reflected acoustic signals detected by aperture elements corresponding to each line in the US mode of FIG. 2, and FIG. 4 shows an ultrasonic image after reconstruction. In FIG. 3, the vertical axis indicates the elapsed time from ultrasonic transmission. Data of each line from line 1 to line 128 is generated by delay-adding (phase matching addition) the reflected acoustic signals of 64 elements in each line (however, the opening elements are fewer than 64 elements at the end). 1 can be generated .
レーザユニット13から出射したレーザ光は、被検体に照射される。被検体内では、照射されたパルスレーザ光による光音響信号が発生する。プローブ11は、被検体内で発生した光音響信号を検出する(ステップB4)。プローブが検出した光音響信号は、受信回路21を介してAD変換手段22に入力される。AD変換手段22は、光音響信号をサンプリングしてデジタルデータに変換し、受信メモリ23に格納する。なお、反射音響信号と光音響信号の検出は、どちらを先に行ってもよい。また、例えば図2に示すシーケンスに従って、反射音響信号と光音響信号とを交互に検出するようにしてもよい。 Laser light emitted from the laser unit 13 is irradiated to the subject. In the subject, a photoacoustic signal is generated by the irradiated pulsed laser beam. The probe 11 detects a photoacoustic signal generated in the subject (step B4). Photoacoustic signal probe detects the are entered to the AD converter 22 through the receiving circuit 21. The AD conversion means 22 samples the photoacoustic signal, converts it into digital data, and stores it in the reception memory 23. Note that either the reflected acoustic signal or the photoacoustic signal may be detected first. Further, for example, the reflected acoustic signal and the photoacoustic signal may be detected alternately according to the sequence shown in FIG.
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JP2012038546A JP5839688B2 (en) | 2012-02-24 | 2012-02-24 | Photoacoustic image processing apparatus and method |
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JP2012038546A JP5839688B2 (en) | 2012-02-24 | 2012-02-24 | Photoacoustic image processing apparatus and method |
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JP2013172810A JP2013172810A (en) | 2013-09-05 |
JP2013172810A5 true JP2013172810A5 (en) | 2014-07-10 |
JP5839688B2 JP5839688B2 (en) | 2016-01-06 |
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Families Citing this family (2)
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JP6452110B2 (en) * | 2015-02-06 | 2019-01-16 | キヤノン株式会社 | Hand-held probe |
JP6946307B2 (en) | 2016-08-30 | 2021-10-06 | キヤノン株式会社 | Information acquisition device and signal processing method |
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JP4416256B2 (en) * | 2000-03-10 | 2010-02-17 | 株式会社日立メディコ | Ultrasonic imaging device |
EP1935346A1 (en) * | 2006-12-21 | 2008-06-25 | Stichting voor de Technische Wetenschappen | Imaging apparatus and method |
JP5761935B2 (en) * | 2010-07-22 | 2015-08-12 | キヤノン株式会社 | Subject information acquisition apparatus, subject information acquisition method, and subject information acquisition program |
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