DocumentCode :
3235615
Title :
3D ultrafast elastography imaging of the carotid artery using sparse arrays
Author :
Korukonda, Sanghamithra ; Doyley, Marvin M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Rochester, Rochester, NY, USA
fYear :
2011
fDate :
18-21 Oct. 2011
Firstpage :
721
Lastpage :
724
Abstract :
Non-invasive Vascular Elastography (NIVE) using sparse arrays is a novel method for ultrafast elastography imaging of the carotid artery. Sparse array imaging retains the advantages of fully synthetic aperture imaging i.e. high lateral sensitivity, while overcoming its limitations of poor frame rate and high data volumes. In this study, we investigated the performance of a sparse array system comprising of only seven transmit elements in a dynamic motion regime. It was demonstrated, through simulation and experimental studies, that this technique can produce high quality axial and lateral displacement elastograms that can be used to compute accurate radial and circumferential strain elastograms. In this study, we compare the performance of elastograms obtained using a sparse array to those obtained with plane wave imaging. It was found that while plane wave imaging has a relatively higher frame rate and sonographic SNR, sparse array imaging provides better lateral displacement estimates resulting in superior strain elastograms.
Keywords :
biomechanics; biomedical optical imaging; blood vessels; cardiovascular system; diseases; high-speed optical techniques; image reconstruction; medical image processing; 3D ultrafast elastography imaging; carotid artery; circumferential strain elastograms; dynamic motion regime; fully synthetic aperture imaging; high data volumes; high lateral sensitivity; high quality axial displacement elastograms; high quality lateral displacement elastograms; lateral displacement estimation; noninvasive vascular elastography; plane wave imaging; sonographic SNR; sparse array imaging; sparse array system; superior strain elastograms; transmit elements; Acoustics; Apertures; Arrays; Carotid arteries; Phantoms; Strain;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
ISSN :
1948-5719
Print_ISBN :
978-1-4577-1253-1
Type :
conf
DOI :
10.1109/ULTSYM.2011.0175
Filename :
6293694
Link To Document :
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