公开(公告)号：US07090641B2

公开(公告)日：2006-08-15

申请号：US10718333

申请日：2003-11-20

申请人： Elena Biagi ,  Leonardo Masotti ,  Marco Scabia ,  Iacopo Rossi ,  Nicola Dreoni

发明人： Elena Biagi ,  Leonardo Masotti ,  Marco Scabia ,  Iacopo Rossi ,  Nicola Dreoni

IPC分类号： A61B8/00

CPC分类号： G06T9/007 ,  G01S15/8918

摘要： The method comprises the phases of: sending a series of excitation ultrasonic signals to a volume being investigated, by means of an array of transducers aligned in a transverse direction (x), said ultrasonic signals propagating in depth in said volume according to a direction of propagation (y); acquiring, by means of said transducers, signals reflected from reflectors located in the volume being investigated; performing on said reflected signals a transform in the transverse direction from a spatial domain (x,y), defined by said transverse direction (x) and by said direction of propagation (y), to a first transformed domain; applying, in the transformed domain, a two-dimensional transformation, to straighten every curved image (Ip1, Ip2, Ip3) of a reflector in said volume being investigated and make it essentially orthogonal to the direction of propagation (y); compressing, in the transverse direction (x) each of the straightened curves (Im1, Im2, Im3) to concentrate said straightened image in a zone centered at the level of the position of said reflector along said transverse direction (x).

摘要翻译： 该方法包括以下阶段：通过沿横向方向（x）排列的换能器阵列，将一系列激发超声波信号发送到被研究的体积，所述超声波信号在所述体积中根据 传播（y）; 通过所述换能器获取从位于正被研究的体积中的反射器反射的信号; 对所述反射信号执行从由所述横向（x）和所述传播方向（y）定义的空间域（x，y）到横向的变换到第一变换域; 在变换的域中应用二维变换，以校正正在研究的所述体积中的反射器的每个弯曲图像（Ip 1，Ip 2，Ip 3），并使其基本上与传播方向（y）正交; 在横向方向（x）上压缩每个矫直曲线（Im 1，Im 2，Im 3），以将所述矫直图像沿着所述横向（x）集中在位于所述反射器的位置的水平面的区域中。

公开(公告)号：US07815573B2

公开(公告)日：2010-10-19

申请号：US10383674

申请日：2003-02-25

申请人： Leonardo Masotti ,  Elena Biagi ,  Simona Granchi ,  Luca Breschi

发明人： Leonardo Masotti ,  Elena Biagi ,  Simona Granchi ,  Luca Breschi

IPC分类号： A61B8/00

CPC分类号： G01S7/52038 ,  G01S7/52026 ,  G01S15/8977

摘要： A description is given of a method of spectral analysis of a radio frequency ultrasonic signal reflected by a structure subjected to echographic examination, comprising the steps of: a) transmitting an ultrasonic excitation signal into a portion of said structure under examination; b) receiving a radio frequency response signal from said structure; c) applying a time-frequency transform to said radio frequency response signal, dividing the radio frequency response signal into a plurality of frequency bands; d) calculating a local spectral parameter from the values of the time-frequency transform.

摘要翻译： 对由经过回波检查的结构反射的射频超声信号的频谱分析方法进行说明，包括以下步骤：a）将超声波激发信号发送到被检查结构的一部分; b）从所述结构接收射频响应信号; c）对所述射频响应信号应用时频变换，将射频响应信号分成多个频带; d）根据时频变换的值计算局部频谱参数。

公开(公告)号：US07509861B2

公开(公告)日：2009-03-31

申请号：US10595336

申请日：2004-10-05

申请人： Leonardo Masotti ,  Elena Biagi ,  Simona Granchi ,  Luca Breschi

发明人： Leonardo Masotti ,  Elena Biagi ,  Simona Granchi ,  Luca Breschi

IPC分类号： G01N29/46 ,  A61B8/00 ,  G06K9/20

CPC分类号： G01S7/52036 ,  G01S15/8977

摘要： The method decomposes the radio frequency signal into sub-bands by filtering, for example with a time-frequency transform. From the coefficients acquired through decomposition a matrix of spectral coefficients is obtained, from which local estimators are obtained, constituted in particular by the coefficients of the interpolating polynomials. The statistical distribution of the local estimators is evaluated in windows overlaid on the ultrasound frame. The conformation of the distribution histograms of the spectral coefficients provides a parameter which, combined with the local estimators, provides weighted local estimators, which contain spectral information useful in the identification of specific structures in the organ subjected to ultrasound analysis.

摘要翻译： 该方法通过例如通过时间 - 频率变换的滤波将射频信号分解成子带。 从通过分解获得的系数中，获得频谱系数矩阵，从其获得局部估计器，特别地由内插多项式的系数构成。 在覆盖在超声帧上的窗口中评估局部估计量的统计分布。 频谱系数的分布直方图的构象提供了一个参数，其与局部估计器组合提供加权的局部估计器，其包含有用于识别经过超声分析的器官中的特定结构的光谱信息。

公开(公告)号：US06519376B2

公开(公告)日：2003-02-11

申请号：US09920123

申请日：2001-08-01

申请人： Elena Biagi ,  Fabrizio Margheri ,  Leonardo Masotti ,  David Menichelli

发明人： Elena Biagi ,  Fabrizio Margheri ,  Leonardo Masotti ,  David Menichelli

IPC分类号： G02F1335

CPC分类号： G10K15/046

摘要： The opto-acoustic generator of ultrasound waves comprises an optical fiber associated to a laser-energy source, and an opto-acoustic transducer which is applied to said fiber and is designed to be impinged upon by the laser beam and to absorb partially the energy, converting it into thermal energy, thus bringing about the formation of ultrasound waves by the thermo-acoustic effect. Said opto-acoustic transducer consists of a layer or film containing prevalently graphite, which is applied on a surface of said optical fiber.

摘要翻译： 超声波的光声发生器包括与激光能源相关联的光纤，以及光声换能器，其被施加到所述光纤并被设计成被激光束照射并部分地吸收能量， 将其转化为热能，从而通过热声效应引起超声波的形成。 所述光声换能器由施加在所述光纤表面上的含有普遍石墨的层或膜组成。

公开(公告)号：US6066098A

公开(公告)日：2000-05-23

申请号：US97166

申请日：1998-06-12

申请人： Leonardo Masotti ,  Elena Biagi ,  Marino Cerofolini ,  Alberto Bertini ,  Marco Calzolai ,  Andrea Bigagli ,  Leonardo Galardi ,  Carlo Giovannucci

发明人： Leonardo Masotti ,  Elena Biagi ,  Marino Cerofolini ,  Alberto Bertini ,  Marco Calzolai ,  Andrea Bigagli ,  Leonardo Galardi ,  Carlo Giovannucci

IPC分类号： G01S7/52 ,  A61B8/00

CPC分类号： G01S7/52039 ,  G01S7/52026 ,  G01S7/52034 ,  G01S7/52038

摘要： A method of analyzing an ultrasonic signal is described. The method is characterized in that the ultrasonic signal (f(t)) is sampled and digitized and in that a discrete wavelet transform is applied to the sampled and digitized signal to obtain a spectral map of the sampled signal

摘要翻译： 对超声信号的分析方法进行说明。 该方法的特征在于对超声信号（f（t））进行采样和数字化，并且将离散小波变换应用于采样和数字化信号以获得采样信号的频谱图