A small artery heat transfer model for self-heated thermistor measurements of perfusion in the kidney cortex.

A small artery heat transfer model for self-heated thermistor measurements of perfusion in the kidney cortex.
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用于肾皮质灌注自热热敏电阻测量的小动脉传热模型。

DOI:
10.1115/1.2895707
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发表时间:
1994
期刊:
Journal of biomechanical engineering
影响因子:
--
通讯作者:
Valvano,JW
Valvano,JW
中科院分区:
--
文献类型:
--
作者:
Anderson,GT;Valvano,JW

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根据犬肾皮质血管的解剖结构,建立了一种自热式热敏电阻测量犬肾血流灌注的小动脉模型。在该模型中,小叶间动脉和静脉在由于血液流动的热传递中起主导作用。有效热导率kss是根据肾皮质传热的稳态热敏电阻测量值计算的。这个小的动脉和静脉灌注模型正确地显示了测量的kss与灌注曲线的形状。它还正确预测热敏电阻的正弦响应可用于测量灌注组织中的固有组织电导率km。虽然该模型是犬肾皮质特有的,但建模方法适用于各种生物组织。
A small artery model (SAM) for self-heated thermistor measurements of perfusion in the canine kidney is developed based on the anatomy of the cortex vasculature. In this model interlobular arteries and veins play a dominant role in the heat transfer due to blood flow. Effective thermal conductivity, kss, is calculated from steady state thermistor measurements of heat transfer in the kidney cortex. This small artery and vein model of perfusion correctly indicates the shape of the measured kssversus perfusion curve. It also correctly predicts that the sinusoidal response of the thermistor can be used to measure intrinsic tissue conductivity, km, in perfused tissue. Although this model is specific for the canine kidney cortex, the modeling approach is applicable for a wide variety of biologic tissues.
DOI: 10.1115/1.3138689
发表时间: 1987-11-01
影响因子: 1.7
作者:
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通讯作者: DENHAM, CR
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DOI: 10.1152/ajplegacy.1971.221.5.1361
发表时间: 1971
期刊: The American journal of physiology
影响因子: --
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通讯作者: R. Beeuwkes
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