Improvement of the Pennes equation based on the mixed bio-heat transfer model

Based on the studies of the vascular tree's simulation and combined with the mixed bio-heat transfer model,the traditional Pennes bio-heat transfer equation was improved by using the blood perfusion considering the local heat transfer between the blood and the tissue. COMSOL Multiphysics was used to simulate,and the results of Pennes equation improved before and after were compared. The results showed that the improved Pennes equation could reflect the local influence of the vascular tree on organization's regional temperature distribution, while the traditional Pennes equation only described the homogeneous form of tissue temperature distribution.