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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

TEMPERATURE DISTRIBUTION WITHIN THE LEFT VENTRICULAR WALL OF THE NORMAL AND INFARCTED HEART

Get access (open in a dialog) DOI: 10.1615/IHTC8.4520
pages 3073-3078

Résumé

The instantaneous local temperature distribution across the wall of the left ventricle (LV) in the heart is obtained by solving the bio-heat energy balance equation, utilizing the distributed oxygen demand, and the time dependent local coronary perfusion, coupled with our spatial and temporal mechanical model of the L.V. 1-D model approximations of the cycle-averaged and time dependent local temperatures are presented for the normal "symmetric" heart. And a 2-D model yields the time averaged local temperatures for an infarcted non-symmetric LV.
Effects of heart rate, blood perfusion rate and the external wall free convection boundary condition are investigated. The calculated 1-D results are found to be in fair agreement with experimental data. The 2-D temperature distributions indicate that the infarcted region has a very pronounced local effect, which decreases rapidly out of the region in the circumferential direction. The results suggest the thermal procedure as a potential aid for the identification of infarcted regions in the muscle of the heart.