Title :
Ultrasound displacement estimation combining Viterbi processing and phase rotated correlation coefficient filter
Author :
Huang, Lingyun ; Petrank, Yael ; Jia, Congxian ; Huang, Sheng-Wen ; O´Donnell, Matthew
Author_Institution :
Dept. of Bioeng., Univ. of Washington, Seattle, WA
Abstract :
Large interframe strain in speckle tracking based myocardial strain imaging causes significant peak hopping artifacts. In this paper, an algorithm combining Viterbi search with an improved correlation coefficient filter is proposed to reduce peak hopping artifacts. A 2-D simulation with average 8% compression and in-vivo data from a rabbit experiment were performed to validate the proposed algorithm. Significant reduction of peak hopping artifacts is shown in both simulation and experimental results. These results strongly suggest that the proposed algorithm is an effective tool to solve the peak hopping problem for myocardial imaging at large strain.
Keywords :
acoustic correlation; biomechanics; biomedical ultrasonics; cardiology; maximum likelihood estimation; medical image processing; muscle; Viterbi processing; in-vivo data; myocardial strain imaging; peak hopping artifacts; phase-rotated correlation coefficient filter; speckle tracking algorithm; ultrasound displacement estimation; Biomedical engineering; Capacitive sensors; Decorrelation; Filtering; Filters; Phase estimation; RF signals; Speckle; Ultrasonic imaging; Viterbi algorithm; Viterbi; peak hopping; phase rotation; tilt correlation coefficient filter;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0080
