Analysis of disorder in pulsatile flows with application to poststenotic blood velocity measurement in dogs.

Digital techniques for performing analyses of disorder in a pulsatile flow are presented. Examples are taken from in vivo, hot film anemometer measurements of blood velocity in the descending thoracic aorta of dogs with a controlled degree of stenosis imposed. It is found that flow disorder, as described by this analysis, is a sensitive indicator of the presence of mild constrictions in the vessel under study. Implications to the recognition of localized, occlusive vascular disease are discussed.

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