Theoretical Analysis of Noninvasive Measurement Method for Thermal Parameters of Living Tissue
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摘要: 基于兩點法測量原理,提出了一種通過三點測溫無損確定柱狀生物活體組織熱參數的新方法,建立了該方法的理論模型,數值計算分析了導熱系數、血液灌注率體積熱容量等參數對溫度變化的影響,以及這些熱參數的靈敏度系數.研究結果表明,活體組織的上述熱參數的靈敏度系數是線性無關的,可以通過所提出的三點法同時進行測量.Abstract: Based on the principle of two-point measurement method, a measuring technique for thermal para-meters of living tissue by using three-point temperature measurements was proposed. The corresponding theoretical model was established. The effects of thermal conductivity blood perfusion and volumetric heat capacity on the temperature variation were analyzed through numerical calculations. The results of sensitivity analysis show that the sensitivity coefficients of these thermal parameters are linearly independent each other, and thereby can be measured simultaneously by using this three-point method.
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