项目名称: 合成孔径血流矢量成像研究
项目编号: No.11204346
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 物理学I
项目作者: 孟晓辉
作者单位: 中国科学院声学研究所
项目金额: 25万元
中文摘要: 在医学超声成像系统中,血流成像是一种很重要的诊断模式。血流速度估计方法是其中的关键技术,直接影响成像质量和检测的准确性。与传统的超声血流成像方式相比,合成孔径血流成像具有诸多优势。本项目针对合成孔径血流成像存在的问题,通过理论分析、仿真和实验相结合的方法,旨在解决低质量图像间的运动补偿,血流信号的有效提取或者在存在杂波情况下有效的血流矢量估计问题。从而实现清晰、准确的二维血流矢量成像。
中文关键词: 合成孔径;合成孔径序列波束形成;速度矢量估计;运动补偿;超声成像
英文摘要: Ultrasonic blood flow imaging is an important mode of medical ultrasound imaging. And the blood flow velocity estimation method can influence the imaging quality and accuracy and it is the key technology of blood flow imaging. Synthetic aperture flow vector imaging has many advantages compared with conventional ultrasound blood flow imaging modalities. This project is for the problems that still exist in the synthetic aperture flow vector imaging. By theoretical analysis, the method of combining simulation and experiment, the project will study on motion compensation method between the low-quality images, the effective seperation of the blood flow signal from unwanted clutter or the blood flow vector estimation algrithm in the presence of unwanted clutter case. Ultimately, the project will get algorithms for clear and accurate blood flow vector images.
英文关键词: synthetic aperture;synthetic aperture sequential beamforming;velocity vector estimation;motion compensation;ultrasound imaging