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Proceedings Paper

Fluorescent image-tracking velocimetry algorithms for quantitative flow analysis in artificial organ devices
Author(s): Ramanand Singh; Franklin D. Shaffer; Harvey Borovetz
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Paper Abstract

A Fluorescent Image Tracking Velocimetry (FITV) system has been developed to produce two-dimensional velocity maps of flow fields. This system is capable of measurements at flow boundaries, such as the blood-biomaterial interfaces in artificial cardiac organs (in-vitro only). Three pulse-coding schemes--a single-pulse code, a dash-dot pulse code, and a constant- frequency pulse code--and associated image analysis algorithms have been developed and tested. These algorithms were applied to analyze flow in three types of artificial cardiac organs: the Novacor Left Ventricular Assist System, the Nimbus AxiPump, and the Hattler Intravenous Membrane Oxygenator. Results are presented and discussed in terms of image recognition. Despite the drawback of time-direction ambiguity, a constant-frequency pulse with a hybrid of constant-frequency and single-pulse analyses was found to provide optimum results for these applications.

Paper Details

Date Published: 29 July 1993
PDF: 12 pages
Proc. SPIE 1905, Biomedical Image Processing and Biomedical Visualization, (29 July 1993); doi: 10.1117/12.148640
Show Author Affiliations
Ramanand Singh, Science Applications International Corp. (United States)
Franklin D. Shaffer, U.S. Dept. of Energy (United States)
Harvey Borovetz, Univ. of Pittsburgh Medical Ctr. (United States)

Published in SPIE Proceedings Vol. 1905:
Biomedical Image Processing and Biomedical Visualization
Raj S. Acharya; Dmitry B. Goldgof, Editor(s)

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