ISSN Online: 2377-424X
ISBN Print: 0-89116-559-2
International Heat Transfer Conference 8
TEMPERATURE DISTRIBUTION WITHIN THE LEFT VENTRICULAR WALL OF THE NORMAL AND INFARCTED HEART
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.
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.