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    • 1. 发明授权
    • Method for analyzing a signal by wavelets
    • 通过小波分析信号的方法
    • US5124930A
    • 1992-06-23
    • US481336
    • 1990-02-20
    • Jean-Marie NicolasAlain Lemer
    • Jean-Marie NicolasAlain Lemer
    • G01R23/16
    • G01R23/16
    • To analyze short-duration signals by means of an analysis using MARRAT's algorithm with the wavelets of DAUBECHIES, at each step the correlation is done both on the signals coming from the correlation at the previous step by the scale .PHI..sub.O signal and on the signals coming from the correlation at the preceding step by the signal .PHI..sub.O. Thus, at the stage p, there is obtained a homogeneous signal consisting of 2.sup.p .times.N.sup.p points of analysis. This makes it possible, in the method of analysis by wavelets, to obtain a depiction of the results having a homogeneous form making it easier to interpret them.
    • 为了通过使用具有DAUBECHIES小波的MARRAT算法的分析来分析短持续时间信号,在每个步骤中,对来自前一步骤的相关信号由标度PHI O信号和信号来的相关性进行相关 从前面步骤的相关信号PHI O.因此,在阶段p,获得由2pxNp分析点组成的均匀信号。 这使得在通过小波分析的方法中可以获得具有均匀形式的结果的描绘,使得它们更容易解释。
    • 2. 发明授权
    • Method of and device for measuring an ultrasound scatter function
    • 用于测量超声散射函数的方法和装置
    • US4750366A
    • 1988-06-14
    • US843894
    • 1986-03-25
    • Jean-Marie Nicolas
    • Jean-Marie Nicolas
    • G01N29/04A61B8/00G01N29/44G01S7/52G01S15/89G01N29/00A61B10/00
    • G01S7/52036G01S15/8954G01S7/52025
    • A biological or other material is scanned along a line or plurality of lines by at least one transducer, and the signals received are separated into n substantially equal, consecutive frequency bands after which the envelope of the signals in each frequency band is determined. Each of the signal envelopes, being proportional to the power spectrum of the echographic signal, is divided by a dividing signal which is proportional to the power spectrum of a phantom which has the same attenuation as the object being examined, the logarithm being determined of the signal resulting from this division, after which the following operations are performed in the channels a, b, . . . , i, . . . n on the basis of the signals thus obtained: (a) calculating the logarithm of a frequency which is representative of the passband of each channel; (b) storing in a memory and/or displaying a function of the ratio of the scatter function of the object scanned and the scatter function of the phantom as a function of the frequency mentioned sub (a); as a representation of the object's scatter function.
    • 通过至少一个换能器沿线或多条线扫描生物或其他材料,并且接收到的信号被分离成n个基本相等的连续频带,之后确定每个频带中的信号的包络。 与回波信号的功率谱成比例的每个信号包络被除以与被检测物体具有相同衰减的体模的功率谱成比例的分频信号,对数被确定为 由此划分得到的信号,之后在通道a,b,...中执行以下操作。 。 。 , 一世, 。 。 。 根据如此获得的信号,n:计算表示每个通道的通带的频率的对数; (b)存储在存储器中和/或显示作为所述sub(a)的频率的函数的扫描对象的散射函数与体模的散射函数的比率的函数的函数; 作为对象散点函数的表示。
    • 3. 发明授权
    • Method of and device for scanning objects by means of ultrasound
echography
    • 通过超声波回波检测对物体进行扫描的方法和装置
    • US4688428A
    • 1987-08-25
    • US843906
    • 1986-03-25
    • Jean-Marie Nicolas
    • Jean-Marie Nicolas
    • G01N29/44A61B8/00A61B8/14G01N29/04G01N29/26G01S7/52
    • G01S7/52036G01S7/52025G01S7/52058
    • A method of scanning objects by means of ultrasound echography, including the repeated transmission of ultrasound signals by means of at least one ultrasound transducer and the reception of the ultrasound echoes which correspond to the principal obstacles encountered by the transmitted signals in their propagation direction, characterized in that the method includes the following operations:(a) storing an echographic line in a memory;(b) determining the power spectrum for a given observation depth, including the correction for the effects of diffraction and attenuation;(c) storing in a memory and/or displaying the scatter function of the object examined as a function of frequency;(d) repeating the operations (b), (c) for every desired depth on a given echographic line, and the operations (a), (b), (c) for other echographic lines.
    • 一种通过超声波回波成像扫描物体的方法,包括通过至少一个超声换能器重复传输超声波信号,以及接收对应于传播信号在其传播方向上遇到的主要障碍的超声回波,其特征在于 因为该方法包括以下操作:(a)将回波线存储在存储器中; (b)确定给定观测深度的功率谱,包括对衍射和衰减效应的校正; (c)存储在存储器中和/或显示被检查对象的散射函数作为频率的函数; (d)针对给定回波线上的每个所需深度重复操作(b),(c),以及其他回波线的操作(a),(b),(c))。
    • 6. 发明授权
    • Device for combined B-scan and B/A imaging
    • 用于组合B扫描和B / A成像的装置
    • US4702258A
    • 1987-10-27
    • US825844
    • 1986-02-04
    • Jean-Marie NicolasPatrick Pesque
    • Jean-Marie NicolasPatrick Pesque
    • G01S15/89A61B8/08G01N29/06G01N29/44G01S7/52A61B10/00
    • G01S7/52071G01N29/0609G01S7/52025G01S7/52036G01S7/52058G01N2291/02491
    • 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.
    • 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。
    • 9. 发明授权
    • Device for scanning objects by means of ultrasound echography
    • 用于通过超声波回波扫描来扫描物体的装置
    • US4762132A
    • 1988-08-09
    • US851837
    • 1986-04-14
    • Jean-Marie NicolasJean-Luc Bernatets
    • Jean-Marie NicolasJean-Luc Bernatets
    • G01S7/523A61B8/00A61B8/14G01S7/52G01S7/526G01S15/89A61B10/00
    • A61B8/00G01S15/8977
    • A device for scanning objects, notably biological tissues, by means of ultrasound echography, which device includes at least one ultrasound transducer (10) which is connected to a transmitter stage (20) for the repeated transmission of ultrasound waves to the object to be examined, and to a receiver stage for receiving the echoes reflected in the direction of the transducer. The device in accordance with the invention is characterized mainly in that the receiver stage includes:(A) a transformation device (110) for transforming the echographic signal by calculation of the Mellin transform of this signal;(B) an arithmetic device (120) for calculating a correction function by transformation of the attenuation function;(C) a processing device (130) which consists of a series connection of a multiplier circuit (131) for multiplying the respective output signals of the transformation devices (110) and (120) and a circuit (132) for calculating the inverse Mellin transform of the signal thus obtained.(D) a processing device (140) for processing the output signal of the arithmetic circuit (132) for calculating the inverse Mellin transform for the display of images of the region scanned and/or data which are representative of the region scanned.
    • 一种用于通过超声波回波造影来扫描物体(特别是生物组织)的装置,该装置包括至少一个超声波换能器(10),该超声波换能器连接到发射台(20),用于将超声波重复传输到被检查物体 以及接收器级,用于接收在换能器的方向上反射的回波。 根据本发明的装置的特征主要在于接收机级包括:(A)通过计算该信号的Mellin变换来变换回波信号的变换装置(110) (B)用于通过衰减函数的变换来计算校正函数的算术装置(120) (C)处理装置(130),其由用于乘以变换装置(110)和(120)的各个输出信号的乘法器电路(131)和用于计算反Mellin的电路(132)的串联连接构成 由此获得的信号的变换。 (D)处理装置(140),用于处理运算电路(132)的输出信号,用于计算用于显示所扫描区域和/或表示扫描区域的数据的图像的反Mellin变换。
    • 10. 发明授权
    • Apparatus for examining an object by ultrasonic echography
    • 用于通过超声波回波检查来检查物体的装置
    • US4680966A
    • 1987-07-21
    • US743222
    • 1985-06-10
    • Jean-Marie Nicolas
    • Jean-Marie Nicolas
    • A61B8/14A61B8/00G01H5/00G01N29/44G01S7/52G01S15/89G01N29/00
    • G01H5/00G01S15/8913G01S15/8977G01S7/52046G01S15/8915
    • An apparatus for examining objects by ultrasonic echography comprising an ultrasonic transmitting transducer (10) and an ultrasonic receiving transducer (20), with which are associated a transmitter stage (30), a receiver stage (40) constituted by a channel (100) for processing the echo signals reflected to the receiving transducer by the obstacles they meet in the said region and a storage and/or visualization stage (60), characterized in that the transmitting transducer (10) is at the same time a receiver and in that the receiver stage (40) also comprises a channel (200) for processing the output signals of the said transmitting/receiving transducer (10) thus formed and a subtraction device (500), whose output is connected to a first input (560) of the storage and/or visualization stage and whose two inputs receive the output signals of the said channels (100) and (200) representative of the real and theoretical travelling times, respectively, between the transducers.
    • 一种用于通过超声波回波检查检查物体的装置,包括超声波发射换能器(10)和超声波接收换能器(20),与发射器级(30),由通道(100)构成的接收器级(40) 通过其在所述区域中遇到的障碍物以及存储和/或可视化阶段(60)处理反射到接收换能器的回波信号,其特征在于,发射换能器(10)同时是接收器, 接收机级(40)还包括用于处理由此形成的所述发送/接收换能器(10)的输出信号的通道(200)和减法装置(500),其输出端连接到 存储和/或可视化阶段,其两个输入分别接收代表换能器之间的实际和理论行进时间的所述通道(100)和(200)的输出信号。