Title :
ARFI imaging of the cardiovascular system
Author :
Pinton, G.F. ; Palmeri, M.L. ; McAleavey, S.A. ; Nightingale, K.R. ; Trahey, G.E.
Author_Institution :
Duke Univ., Durham, NC, USA
Abstract :
We present results of a pilot study of ex vivo and in vivo acoustic radiation force impulse (ARFI) imaging demonstrating measurements of the mechanical properties of the medial and adventitial layers in the carotid, and popliteal arteries. The data was obtained on a commercial scanner, providing co-registered B-mode and Color Doppler images. A real-time ARFI imaging system capable of achieving frame rates of 0.75 Hz was developed. The 2-D and 1-D images of the tissue´s response to brief and localized applications of radiation force show good correlation with B-mode and pathology based characterization of vessel geometry and plaque stiffness. Measurements of arterial response during both systole and diastole are presented. We address implementation issues and discuss the potential applications of this new vascular imaging method.
Keywords :
Doppler measurement; biological effects of acoustic radiation; biomechanics; biomedical imaging; cardiovascular system; acoustic radiation force impulse; adventitial layers; cardiovascular system; color Doppler images; commercial scanner; mechanical properties; medial layers; pathology; plaque stiffness; popliteal arteries; real time imaging; vascular imaging; vessel geometry; Acoustic imaging; Acoustic measurements; Arteries; Cardiovascular system; Force measurement; In vivo; Mechanical factors; Mechanical variables measurement; Pathology; Real time systems;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293395
