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。