Feasibility of using a reliable automated Doppler flow velocity measurements for research and clinical practices

Massoud Zolgharni; Niti M. Dhutia; Graham D. Cole; Keith Willson; Darrel P. Francis

doi:10.1117/12.2042645

20 March 2014 Feasibility of using a reliable automated Doppler flow velocity measurements for research and clinical practices

Massoud Zolgharni, Niti M. Dhutia, Graham D. Cole, Keith Willson, Darrel P. Francis

Author Affiliations +

Proceedings Volume 9040, Medical Imaging 2014: Ultrasonic Imaging and Tomography; 90401D (2014) https://doi.org/10.1117/12.2042645
Event: SPIE Medical Imaging, 2014, San Diego, California, United States

Abstract

Echocardiographers are often unkeen to make the considerable time investment to make additional multiple measurements of Doppler velocity. Main hurdle to obtaining multiple measurements is the time required to manually trace a series of Doppler traces. To make it easier to analyse more beats, we present an automated system for Doppler envelope quantification. It analyses long Doppler strips, spanning many heartbeats, and does not require the electrocardiogram to isolate individual beats. We tested its measurement of velocity-time-integral and peak-velocity against the reference standard defined as the average of three experts who each made three separate measurements. The automated measurements of velocity-time-integral showed strong correspondence (R² = 0.94) and good Bland-Altman agreement (SD = 6.92%) with the reference consensus expert values, and indeed performed as well as the individual experts (R² = 0.90 to 0.96, SD = 5.66% to 7.64%). The same performance was observed for peak-velocities; (R² = 0.98, SD = 2.95%) and (R² = 0.93 to 0.98, SD = 2.94% to 5.12%). This automated technology allows <10 times as many beats to be acquired and analysed compared to the conventional manual approach, with each beat maintaining its accuracy.

Citation Download Citation

Massoud Zolgharni, Niti M. Dhutia, Graham D. Cole, Keith Willson, and Darrel P. Francis "Feasibility of using a reliable automated Doppler flow velocity measurements for research and clinical practices", Proc. SPIE 9040, Medical Imaging 2014: Ultrasonic Imaging and Tomography, 90401D (20 March 2014); https://doi.org/10.1117/12.2042645

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available