Regional myocardial shape and dimensions of the working isolated canine left ventricleAngiographic experiments were performed on isolated canine left ventricle preparations using donor dog to supply blood to the coronary circulation via a rotary pump to control coronary flow. The angiographic record was transferred from video tape to video disk for detailed uninterrupted sequential analysis at a frequency of 60 fields/sec. It is shown that the use of a biplane X-ray technique and a metabolically supported isolated canine left ventricle preparation provides an angiographically ideal means of measuring the mechanical dynamics of the myocardium while the intact left ventricular myocardial structure and electrical activation pattern retain most of the in situ ventricular characteristics. In particular, biplane X-ray angiography of the left ventricle can provide estimates of total ventricular function such as ejection fraction, stroke volume, and myocardial mass correct to within 15% under the angiographically ideal conditions of the preparation.
Document ID
19770034508
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Ritman, E. (Mayo Clinic Rochester, MN, United States)
Tsuiki, K. (Mayo Clinic Rochester, MN, United States)
Donald, D. (Mayo Clinic Rochester, MN, United States)
Wood, E. H. (Mayo Foundation, Dept. of Physiology and Biophysics, Rochester Minn., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1975
Subject Category
Aerospace Medicine
Meeting Information
Meeting: Conference on Cardiovascular imaging and image processing: Theory and practice - 1975