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Proceedings Paper

Computer Quantitation Of Coronary Angiograms
Author(s): Deborah C. Ledbetter; Robert H. Selzer; Richard M. Gordon; David H. Blankenhorn; Miguel E. Sanmarco
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Paper Abstract

A computer technique is being developed at the Jet Propulsion Laboratory to automate the measurement of coronary stenosis. A Vanguard 35mm film transport is optically coupled to a Spatial Data System vidicon/digitizer which in turn is con-trolled by a DEC PDP 11/55 computer. Programs have been developed to track the edges of the arterial shadow, to locate normal and atherosclerotic vessel sections and to measure percent stenosis. Multiple frame analysis techniques are being investigated that involve on the one hand, averaging stenosis measurements from adjacent frames, and on the other hand, averaging adjacent frame images directly and then measuring stenosis from the averaged image. For the latter case, geometric transformations are used to force registration of vessel images whose spatial ori-entation changes.

Paper Details

Date Published: 19 June 1979
PDF: 14 pages
Proc. SPIE 0167, Noninvasive Cardiovascular Measurements, (19 June 1979); doi: 10.1117/12.956976
Show Author Affiliations
Deborah C. Ledbetter, Jet Propulsion Laboratory (United States)
Robert H. Selzer, Jet Propulsion Laboratory (United States)
Richard M. Gordon, Informatics, Inc. (United States)
David H. Blankenhorn, USC School of Medicine (United States)
Miguel E. Sanmarco, USC - Rancho Los Amigos Hospital (United States)

Published in SPIE Proceedings Vol. 0167:
Noninvasive Cardiovascular Measurements
Donald C. Harrison; Harry A. Miller; Eugene V. Schmidt, Editor(s)

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