Principal strain vascular elastography using compounded plane wave imaging

Rohit Nayak, Jacques Ohayon, Giovanni Schifitto, Marvin Doyley

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Principal strain imaging could enhance the diagnostic performance of vascular elastography, but conventional ultrasound system cannot measure lateral displacements precisely, information needed to compute principal strain. The goal of this study is to investigate the feasibility of using compounded plane wave imaging to visualize principal strain within the carotid artery. To compare the quality of principal strain relative to radial and circumferential (polar) strain elastogram, we performed a simulation study. We synthesized radio-frequency (RF) echo frames of homogeneous and heterogeneous vessels. The simulated ultrasound scanner acquired plane wave images from transmission angles of -14 to 14 in steps of 2 using a linear transducer array operating at 5. The accuracy of principal and polar strains were comparable (both varied between 7 % to 12 %), but principal strain offered considerably higher elastographic contrast-to-noise ratio (4 - 14 dB). The results also revealed that the elastographic contrast-to-noise ratios of principal strain elastograms were significantly larger than those of polar (p < 0.05). The results suggest that compounding plane wave vascular elastography can produce useful principal strain elastograms.

Original languageEnglish (US)
Title of host publication2016 IEEE International Ultrasonics Symposium, IUS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467398978
DOIs
StatePublished - Nov 1 2016
Event2016 IEEE International Ultrasonics Symposium, IUS 2016 - Tours, France
Duration: Sep 18 2016Sep 21 2016

Publication series

NameIEEE International Ultrasonics Symposium, IUS
Volume2016-November
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Conference

Conference2016 IEEE International Ultrasonics Symposium, IUS 2016
CountryFrance
CityTours
Period9/18/169/21/16

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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