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

Dhutia, NM; Cole, GD; Zolgharni, M; Manisty, CH; Willson, K; Parker, KH; Hughes, AD; (2014) Automated speckle tracking algorithm to aid on-axis imaging in echocardiography. Journal of Medical Imaging , 1 (3) , Article 037001. 10.1117/1.JMI.1.3.037001. Green open access

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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 (r=0.87r=0.87) and compared favourably with the correlation between individual specialists and the consensus, 0.82±0.090.82±0.09. Each individual specialist’s assessments were within the consensus of other specialists, 75±14%75±14% 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 0.97±0.87  cm0.97±0.87  cm, and between the automated algorithm and specialists’ consensus was 0.92±0.70  cm0.92±0.70  cm. 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.

Type: Article
Title: Automated speckle tracking algorithm to aid on-axis imaging in echocardiography
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/1.JMI.1.3.037001
Publisher version: http://dx.doi.org/10.1117/1.JMI.1.3.037001
Language: English
Additional information: Copyright © 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.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute of Cardiovascular Science
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute of Cardiovascular Science > Clinical Science
URI: http://discovery.ucl.ac.uk/id/eprint/1498691
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