Key result
3D finger modeling demonstrates fingertip temperature variation closely tracks blood flow changes.
This computational model demonstrates that temperature variation in the fingertip is closely related to blood flow variation and the anatomical location of large vessels.
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May guide temperature-based perfusion monitoring development; leaves open clinical validation in humans.
Purpose The purpose of this paper is to investigate the blood flow and temperature distribution in human extremities. Design/methodology/approach The simulation is carried out from three aspects. Firstly, the hemodynamics in the human upper limb is analyzed by one‐dimensional model for pulsalite flow in an elastic tube. Secondly, the blood flow and heat transfer through living tissues are described basing on porous media theory, and the tissue model is coupled with the one‐dimensional blood flow model. With respect to geometric modeling, MR‐image‐based modeling method is employed to construct a realistic model of the human finger. Findings It is found that the temperature variation is closely related to the blood flow variation in the fingertip and the blood flow distribution in the tissue is dependent on the locations of large arteries and veins. Originality/value Blood flow and temperature distribution in a 3D realistic human finger are firstly obtained by coupling the blood circulation and porous media model.
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He et al. (2008) studied Blood flow and temperature distribution in human extremities. Finite element numerical analysis was evaluated on Temperature and blood flow distribution. Finite element numerical analysis of a 3D realistic human finger model demonstrated that temperature variation is closely related to blood flow variation in the fingertip.
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