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Automated speckle tracking algorithm to aid on-axis imaging in echocardiography

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Title: Automated speckle tracking algorithm to aid on-axis imaging in echocardiography
Authors: Dhutia, NM
Cole, GD
Zolgharni, M
Manisty, CH
Willson, K
Parker, KH
Hughes, AD
Francis, DP
Item Type: Journal Article
Abstract: Obtaining a "correct" view in echocardiography is a subjective process in which an operator attempts to obtain images conforming to consensus standard views. Real-time objective quantification of image alignment may assist less experienced operators, but no reliable index yet exists. We present a fully automated algorithm for detecting incorrect medial/lateral translation of an ultrasound probe by image analysis. The ability of the algorithm to distinguish optimal from sub-optimal four-chamber images was compared to that of specialists-the current "gold-standard." The orientation assessments produced by the automated algorithm correlated well with consensus visual assessments of the specialists ([Formula: see text]) and compared favourably with the correlation between individual specialists and the consensus, [Formula: see text]. Each individual specialist's assessments were within the consensus of other specialists, [Formula: see text] of the time, and the algorithm's assessments were within the consensus of specialists 85% of the time. The mean discrepancy in probe translation values between individual specialists and their consensus was [Formula: see text], and between the automated algorithm and specialists' consensus was [Formula: see text]. This technology could be incorporated into hardware to provide real-time guidance for image optimisation-a potentially valuable tool both for training and quality control.
Issue Date: 25-Nov-2014
Date of Acceptance: 31-Oct-2014
URI: http://hdl.handle.net/10044/1/41808
DOI: http://dx.doi.org/10.1117/1.JMI.1.3.037001
ISSN: 2329-4310
Publisher: Society of Photo-optical Instrumentation Engineers
Journal / Book Title: Journal of Medical Imaging
Volume: 1
Issue: 3
Copyright Statement: © 2014 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Sponsor/Funder: British Heart Foundation
Funder's Grant Number: FS/10/38/28268
Keywords: automated guidance
echocardiography
speckle tracking
ultrasound probe positioning
Publication Status: Published
Article Number: 037001
Appears in Collections:Faculty of Engineering
Bioengineering
National Heart and Lung Institute
Faculty of Medicine



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