TY - GEN
T1 - Computerized analysis of ultrasound images
T2 - 2012 IEEE International Ultrasonics Symposium, IUS 2012
AU - Gastounioti, A.
AU - Golemati, S.
AU - Nikita, K. S.
PY - 2012
Y1 - 2012
N2 - We investigated potential associations between motion and texture features of the diseased arterial wall (atherosclerotic plaques). To this end, various motion indices representing velocity, amplitude and diastole-to-systole displacement, and texture features based on first-and second-order statistics were estimated. Associations were revealed by using the Spearman rank correlation coefficient and the statistical significance of the results was validated through permutation tests. It was concluded that (a) heterogeneous material composition of the plaque reduces its movement in the radial and longitudinal directions, probably because of interactions between different materials and (b) bright image regions (echogenic materials) moved more intensely in the longitudinal direction than darker image regions (anechoic materials), while the opposite was observed for motion in the radial direction. Further investigations including large samples of real data, additional features and histological data, are necessary to draw valid conclusions about motion activities and mechanical interactions of atherosclerotic plaque components.
AB - We investigated potential associations between motion and texture features of the diseased arterial wall (atherosclerotic plaques). To this end, various motion indices representing velocity, amplitude and diastole-to-systole displacement, and texture features based on first-and second-order statistics were estimated. Associations were revealed by using the Spearman rank correlation coefficient and the statistical significance of the results was validated through permutation tests. It was concluded that (a) heterogeneous material composition of the plaque reduces its movement in the radial and longitudinal directions, probably because of interactions between different materials and (b) bright image regions (echogenic materials) moved more intensely in the longitudinal direction than darker image regions (anechoic materials), while the opposite was observed for motion in the radial direction. Further investigations including large samples of real data, additional features and histological data, are necessary to draw valid conclusions about motion activities and mechanical interactions of atherosclerotic plaque components.
KW - B-mode ultrasound
KW - Carotid
KW - Spearman rank correlation
KW - atherosclerotic plaque
KW - motion
KW - texture
UR - http://www.scopus.com/inward/record.url?scp=84882337883&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2012.0172
DO - 10.1109/ULTSYM.2012.0172
M3 - Conference contribution
AN - SCOPUS:84882337883
SN - 9781467345613
T3 - IEEE International Ultrasonics Symposium, IUS
SP - 691
EP - 694
BT - 2012 IEEE International Ultrasonics Symposium, IUS 2012
Y2 - 7 October 2012 through 10 October 2012
ER -