منابع مشابه
Heterogeneity of human adipose blood flow
BACKGROUND The long time pharmacokinetics of highly lipid soluble compounds is dominated by blood-adipose tissue exchange and depends on the magnitude and heterogeneity of adipose blood flow. Because the adipose tissue is an infinite sink at short times (hours), the kinetics must be followed for days in order to determine if the adipose perfusion is heterogeneous. The purpose of this paper is t...
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The effects of both intracoronary and intravenous administration of nitroglycerin on transmural distribution of blood flow in the left ventricle after partial coronary artery occlusion was investigated using two independent methods. In 16 open chest, anesthetized dogs, tubing supplying the cannulated left coronary artery was partially occluded. Strain gauges sutured paralled to superficial and ...
متن کاملFractal nature of regional myocardial blood flow heterogeneity.
Spatial variation in regional flows within the heart, skeletal muscle, and in other organs, and temporal variations in local arteriolar velocities and flows is measurable even with low resolution techniques. A problem in the assessment of the importance of such variations has been that the observed variance increases with increasing spatial or temporal resolution in the measurements. This resol...
متن کاملPressure-dependent heterogeneity of renal cortical blood flow in dogs.
We determined the effect of perfusion pressure on the distribution of blood flow within the renal cortex of the anesthetized dog. Total blood flow to the denervated kidney was measured by an electromagnetic flowmeter and perfusion pressure was manipulated over the autoregulatory range (136 to 81 mm Hg) by an aortic clamp. Distribution of cortical blood flow was determined by the radioactive mic...
متن کاملNumerical modeling of subgrid heterogeneity in two phase flow simulations
[1] A coarse-scale model governing two-phase viscous dominated flow in heterogeneous porous media is presented. The coarse-scale water transport equation (or saturation equation) is derived from a volume average of the underlying fine-scale saturation equation. A key component of the coarse-scale description is the subgrid model, which appears in the formulation as a nonlinear, nonlocal term in...
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ژورنال
عنوان ژورنال: Annals of Biomedical Engineering
سال: 1996
ISSN: 0090-6964,1573-9686
DOI: 10.1007/bf02660885