REGIONAL MYOCARDIAL SHAPE AND DIMENSIONS OF THE WORKING ISOLATED CANINE LEFT VENTRICLE.

Erik Ritman, Kai Tsuiki, David Donald David, Earl H. Wood

Research output: Contribution to conferencePaper

2 Scopus citations

Abstract

The use of a biplane x-ray technique and a metabolically-supported isolated canine left ventricle preparation (with an artificial circuit, independent control of aoretic, atrial, and coronary perfusion pressures, as well as heart rate) provides an angiographically ideal means of measuring mechanical dynamics of the myocardium while the intact left ventricular myocardial structure and electrical activation pattern retains most of the in situ ventricular characteristics. An angiographic technique is used because the transmission of roentgen rays through the heart produces roentgen projections over extended periods of time with high temporal and spatial resolution and is noninvasive in that the rays do not directly affect the function of the cardiac system at the dose levels required to produce useful images. Television techniques are used for recording the angiographic images because this greatly facilitates their very rapid and direct conversion into digital form by high-fidelity digital conversion of the video signals. The tremendous capability of digital computers to handle the high data rates, data volumes, and numbers of calculations is, thereby, readily applied.

Original languageEnglish (US)
Pages129-137
Number of pages9
StatePublished - Jan 1 1975
EventCardiovasc Imaging and Image Process, Theory and pract $—$ 1975 - Stanford, CA, USA
Duration: Jul 10 1975Jul 12 1975

Conference

ConferenceCardiovasc Imaging and Image Process, Theory and pract $—$ 1975
CityStanford, CA, USA
Period7/10/757/12/75

ASJC Scopus subject areas

  • Engineering(all)

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    Ritman, E., Tsuiki, K., Donald David, D., & Wood, E. H. (1975). REGIONAL MYOCARDIAL SHAPE AND DIMENSIONS OF THE WORKING ISOLATED CANINE LEFT VENTRICLE.. 129-137. Paper presented at Cardiovasc Imaging and Image Process, Theory and pract $—$ 1975, Stanford, CA, USA, .