RF Ultrasound Estimation from B-Mode Images
RF Ultrasound Estimation from B-Mode Images
复制标题
DOI：
10.1007/978-1-4614-1180-2_1
复制
发表时间：
2012-01-01
期刊：
影响因子：
--
通讯作者：
Sanches, Joao Miguel
中科院分区：
文献类型：
--
作者：
Seabra, Jose;Sanches, Joao Miguel
本章描述了一种通过考虑超声扫描仪在采集过程中通常执行的主要操作来从观察到的B模式图像估计/恢复超声RF包络信号的方法。所提出的方法假设RF信号的瑞利分布和非线性对数律，取决于未知参数，对用于提高数据可视化的扫描仪执行的压缩过程进行建模。所提出的方法的目标是估计压缩定律的参数，根据操作者在采集过程中执行的特定亮度和对比度调节，该方法提供了一个精确的观测模型，允许设计鲁棒和有效的去斑/用于计算机辅助诊断（CAD）应用的超声数据形态和纹理分析的重建方法。使用合成和真实的数据进行大量模拟，这些数据在不同条件下从不同组织采集，示出了该方法的鲁棒性和所采用的观察模型的有效性，以描述在常规超声扫描仪中实现的采集过程。
This chapter describes a method to estimate/recover the ultrasound RF envelope signal from the observed B-mode images by taking into account the main operations usually performed by the ultrasound scanner in the acquisition process.The proposed method assumes a Rayleigh distribution for the RF signal and a nonlinear logarithmic law, depending on unknown parameters, to model the compression procedure performed by the scanner used to improve the visualization of the data.The goal of the proposed method is to estimate the parameters of the compression law, depending on the specific brightness and contrast adjustments performed by the operator during the acquisition process, in order to revert the process.The method provides an accurate observation model which allows to design robust and effective despeckling/reconstruction methods for morphological and textural analysis of Ultrasound data to be used in Computer Aided Dagnosis (CAD) applications.Numerous simulations with synthetic and real data, acquired under different conditions and from different tissues, show the robustness of the method and the validity of the adopted observation model to describe the acquisition process implemented in the conventional ultrasound scanners.