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1. 发明授权

US4702258A Device for combined B-scan and B/A imaging 失效
标题翻译：用于组合B扫描和B / A成像的装置
公开(公告)号：US4702258A
公开(公告)日：1987-10-27
申请号：US825844
申请日：1986-02-04
申请人： Jean-Marie Nicolas , Patrick Pesque
发明人： Jean-Marie Nicolas , Patrick Pesque
IPC分类号： G01S15/89 , A61B8/08 , G01N29/06 , G01N29/44 , G01S7/52 , A61B10/00
CPC分类号： G01S7/52071 , G01N29/0609 , G01S7/52025 , G01S7/52036 , G01S7/52058 , G01N2291/02491
摘要： The combined modality device comprises an ultrasound transducer (10) which is suitable for transmission as well as reception and which is connected to a transmitter stage (20) as well as to a receiver stage (30). The transducer (10) has a bandwidth which at least equals approximately one octave. The transmitter stage (20) comprises a generator for generating activation signals for the transducer (10) with a frequency f.sub.o near the lower limit of said bandwidth, the spectrum of these activation signals excluding the frequency f.sub.1 =2f.sub.o. The receiver stage (30) comprises a B-scan channel and also a B/A processing channel (200) which itself includes a bandpass filter (210) which is centered around said frequency f.sub.1, an envelope detector (220, 230), a comparison circuit (240), a differentiation circuit (250) and a display device (260) whereby measured results in both modalities may be displayed.
摘要翻译：组合的模式装置包括适于传输和接收的超声换能器（10），并且其连接到发射台（20）以及接收器级（30）。换能器（10）具有至少等于大约一个八度的带宽。发射机级（20）包括发生器，用于以接近所述带宽下限的频率fo产生用于换能器（10）的激活信号，这些激活信号的频谱不包括频率f1 = 2fo。接收机级（30）包括B扫描通道和B / A处理通道（200），B / A处理通道本身包括以所述频率f1为中心的带通滤波器（210），包络检测器（220,230），比较电路（240），微分电路（250）和显示装置（260），由此可以显示两种模式的测量结果。

2. 发明授权

US5027820A Device for the three-dimensional focusing of an ultrasonic beam 失效
标题翻译：超声波束三维聚焦装置
公开(公告)号：US5027820A
公开(公告)日：1991-07-02
申请号：US433058
申请日：1989-11-06
申请人： Patrick Pesque
发明人： Patrick Pesque
IPC分类号： A61B8/14 , G01S7/523 , G01S15/89 , G10K11/34 , H04B11/00 , H04N3/10 , H04R3/00
CPC分类号： G10K11/346 , G01S15/8929 , Y10S128/916
摘要： A device for the three-dimensional focusing of an ultrasonic beam, comprising:a phased array (100) has a cylindrical shape with a generatrix X'X, and which comprises M.times.N elementary transducers which are arranged in a curved matrix consisting off M rows extending parallel to X'X and N curved columns extending perpendicularly to said rows.A circuit (200) forms focusing planes P.sub.j which extend through X'X, which circuit is formed by:a multiplexer (201) which selects, for each column i, from the M.times.N signals received by the array (100), the m.sub.o signals S.sub.jk.sup.I supplied by the elementary transducers whose row number is j+k, where K=0, 1, . . . , m.sub.o -1, where m.sub.o is a given number respresenting the aperture width of the ultrasonic beam, and which also forms the sum S.sub.jk.sup.i of the signals S.sub.jk.sup.i and S.sub.jk.sup.i, m.sub.o -k-1 supplied by the elementary transducers which are symmetrically positioned with respect to the center of the aperture, andN identical focusing circuits (202.sub.i) which apply, for each column i, a phase-resetting delay .tau..sub.k to the signals S.sub.jk.sup.i and which form the sum S.sub.j.sup.i of the signals S.sub.jk.sup.i thus reset in phase.An angulation circuit (300) applies for j given, a phase rule to the N signals S.sub.j.sup.i prior to their summing, which rule defines a focusing direction D in the focusing plane P.sub.j.
摘要翻译：一种用于超声波束的三维聚焦的装置，包括：相控阵列（100）具有带有母线X'X的圆柱形形状，并且包括M×N个基本换能器，它们被布置成由M列延伸的弯曲矩阵平行于X'X和N个垂直于所述行延伸的曲线。电路（200）形成延伸通过X'X的聚焦平面Pj，该电路由以下部分形成：多路复用器（201），用于从阵列（100）接收的M×N信号中为每列i选择mo信号 SjkI由行号为j + k的基本换能器提供，其中K = 0,1。。。 mo-1，其中mo是表示超声波束的孔径宽度的给定数，并且还形成由相对于对称定位的基本换能器提供的信号Sjki和Sjki，mo-k-1的和Sjki 对于每个列i，N个相同的聚焦电路（202i）对信号Sjki应用相位复位延迟τk，并且形成信号Sjki的和Sji，从而相位复位。对于给定的j，角度电路（300）适用于在它们的求和之前的N个信号Sji的相位规则，该规则定义聚焦平面Pj中的聚焦方向D.

3. 发明授权

US06726631B2 Frequency and amplitude apodization of transducers 失效
标题翻译：传感器的频率和振幅变迹
公开(公告)号：US06726631B2
公开(公告)日：2004-04-27
申请号：US09954563
申请日：2001-09-17
申请人： Ram Hatangadi , Patrick Pesque , Sanjay Chandran
发明人： Ram Hatangadi , Patrick Pesque , Sanjay Chandran
IPC分类号： A61B800
CPC分类号： B06B1/0622 , A61B8/14 , Y10T29/42
摘要： A method and apparatus for apodization is exemplified in an ultrasound transducer used, for example, in medical applications. The method and apparatus of the present invention provides an ultrasonic transducer with frequency and amplitude apodization, thus improving signal quality and producing improved ultrasonic images. The manufacture of this apparatus is improved by the making of composite cuts into piezoelectric material according to a predetermined pattern which generally varies the concentration of piezoelectric material across the surface of the transducer. Concentration of piezoelectric material can be varied across the surface of the piezoelectric transducer by varying the spacing between the cuts in the piezoelectric material, or by varying the width of the cuts in the piezoelectric material, or a combination of both.
摘要翻译：用于变迹的方法和装置例如在例如医疗应用中使用的超声换能器中。本发明的方法和装置提供了具有频率和振幅变迹的超声波换能器，从而提高信号质量并产生改进的超声图像。通过根据通常改变压电材料在换能器表面上的浓度的预定图案，将复合切割制成压电材料来改进该装置的制造。可以通过改变压电材料的切口之间的间距，或通过改变压电材料中的切口的宽度，或者两者的组合来在压电换能器的表面上改变压电材料的浓度。

4. 发明授权

US5010885A Ultrasonic echograph with controllable phase coherence 失效
标题翻译：具有可控相位相干的超声回波仪
公开(公告)号：US5010885A
公开(公告)日：1991-04-30
申请号：US354010
申请日：1989-05-19
申请人： Mathias Fink , Fabrice Cancre , Patrick Pesque
发明人： Mathias Fink , Fabrice Cancre , Patrick Pesque
IPC分类号： A61B8/14 , G01N29/44 , G01S7/52 , G01S15/89
CPC分类号： G01S7/52046 , G01S7/52026 , G01S7/52036 , G01S7/5206
摘要： On emission and/or on reception, circuits impose on the signals emitted and/or received, delays in accordance with a random or pseudo-random delay law. On emission, just as on reception, this delay law is superposed on that for focusing and angulation of the signals. On emission, the law is obtained, for example, by causing variation of the instants of triggering of the generators of signals for the excitation of the transducers. On reception, either parallel random delay lines or conditional inversion circuits are included. These circuits permit the breakdown of the coherence of the ultrasonic waves on emission, on reception, or on both simultaneously, may be used in an analogue version, as well as in a digital version.
摘要翻译：在发射和/或接收时，电路根据随机或伪随机延迟定律对发射和/或接收的信号施加延迟。在发射时，正如接收一样，这种延迟定律叠加在信号的聚焦和角度上。在发射时，例如通过引起用于激发换能器的信号发生器的触发瞬变的变化来获得定律。在接收时，包括并行随机延迟线或条件反转电路。这些电路允许在发射，接收或两者同时破坏超声波的相干性，可以以模拟版本以及数字版本使用。

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