TY - GEN
T1 - Ultrasound tissue motion assessment using full correlation analysis
AU - Taki, Hirofumi
AU - Sakamoto, Takuya
AU - Yamakawa, Makoto
AU - Shiina, Tsuyoshi
AU - Sato, Toru
PY - 2012
Y1 - 2012
N2 - Conventional ultrasound cross-correlation technique for tissue motion assessment searches the best match between successive B-mode frames. This strategy neglects the decrease of cross-correlation caused by the time difference between two measurement points utilized for the calculation of cross-correlation. The assumption causes the smaller estimated velocity than the true velocity. In this study, we employ full correlation analysis to compensate for the change of the location where the correlation coefficient is maximum. Simulation study shows that the difference between the true tissue velocity and the expectation of the tissue velocity estimated using the proposed method is 11.3% of that estimated using the conventional cross-correlation technique. These findings indicate the potential of the proposed method to improve the accuracy in tissue motion assessment, including blood flow velocity estimation.
AB - Conventional ultrasound cross-correlation technique for tissue motion assessment searches the best match between successive B-mode frames. This strategy neglects the decrease of cross-correlation caused by the time difference between two measurement points utilized for the calculation of cross-correlation. The assumption causes the smaller estimated velocity than the true velocity. In this study, we employ full correlation analysis to compensate for the change of the location where the correlation coefficient is maximum. Simulation study shows that the difference between the true tissue velocity and the expectation of the tissue velocity estimated using the proposed method is 11.3% of that estimated using the conventional cross-correlation technique. These findings indicate the potential of the proposed method to improve the accuracy in tissue motion assessment, including blood flow velocity estimation.
KW - cross-correlation
KW - full correlation analysis
KW - Tissue velocity estimation
KW - ultrasound imaging
UR - http://www.scopus.com/inward/record.url?scp=84882367573&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84882367573&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2012.0642
DO - 10.1109/ULTSYM.2012.0642
M3 - Conference contribution
AN - SCOPUS:84882367573
SN - 9781467345613
T3 - IEEE International Ultrasonics Symposium, IUS
SP - 2563
EP - 2566
BT - 2012 IEEE International Ultrasonics Symposium, IUS 2012
T2 - 2012 IEEE International Ultrasonics Symposium, IUS 2012
Y2 - 7 October 2012 through 10 October 2012
ER -