西华大学学报（自然科学版）2017，Vol.36Issue(4)：1-4,4.DOI:10.3969/j.issn.1673-159X.2017.04.001
基于超声RF信号和TDE算法的组织振动位移估计
Tissue Motion Estimation Based on Ultrasound RF Signal and TDE Algorithm
摘要
Abstract
Tissue elasticity has important significance for clinic diagnosis.Generally,tissue elasticity is obtained from measuring vibration displacement of tissue which is under external force.Therefore,the measurement of tissue vibration displacement is very important.In this paper,one of TDE(Time Delay Estimation) estimators,normalized cross-correlation (NCC),was used to estimate the soft tissue time delay.Usually,signal was divided into many windows,and then NCC was adopted to calculate the matching of window between reference and delayed signal.The maximum value of the cross correlation denotes the time delay of the signals,and the tissue vibration displacement was obtained.The experimental result shows that the proposed method is feasible to estimate the tissue vibration displacement which is basically consistent with the real value.关键词
RF信号/时延估计/归一化互相关/信号插值/样条插值/超声检测Key words
RF signal/time delay estimation/normalized cross correlation/singnal interpolation/spline interpolation/ultrasonic testing分类
信息技术与安全科学引用本文复制引用
陈科,林江莉,黄冠雄..基于超声RF信号和TDE算法的组织振动位移估计[J].西华大学学报（自然科学版）,2017,36(4):1-4,4.基金项目
国家自然科学基金(81301286) （81301286）
教育部博士点基金(20130181120001) （20130181120001）
四川省科技支撑项目(2014GZ0005-7). （2014GZ0005-7）
