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Engineering Analysis of the Hemodynamics of the Circle of Willis
M. E. CLARK, MS;
J. D. MARTIN, MS;
R. A. WENGLARZ, MS;
WILLIAMINA A. HIMWICH, PhD;
F. M. KNAPP, PhD
Arch Neurol. 1965;13(2):173-182.
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THE PRECEDING paper (P 164 this issue) has described a fluid model of the circle of Willis using that structure in the dog brain as a prototype.1 This paper will deal with studies of an electrical analog and a mathematical (computer) representation of the fluid model. Each of the three forms has its inherent advantages and disadvantages. One reason for developing the electrical analog and the computer forms was the great difficulty of determining the values of model fluid flow in the circle proper. In both analog and computer, it is possible to circumvent the need of actually measuring flow. In order to show the comparative results with these models, appropriate experiments were performed and are reported. The conformity of model to animal prototype is also discussed using pressure data from two series of parallel experiments in which various amounts of afferent and efferent occlusion were imposed
. . . [Full Text PDF of this Article]
Author Affiliations
URBANA, ILL; PALO ALTO, CALIF; GALESBURG, ILL; PITTSBURGH
From the Department of Theoretical and Applied Mechanics, University of Illinois, Urbana, Ill, and the Thudichum Psychiatric Research Laboratory, Galesburg State Research Hospital, Galesburg, Ill.
Footnotes
Submitted for publication Jan 23, 1965; accepted April 5, 1965.
Reprint requests to the Department of Theoretical and Applied Mechanics, University of Illinois, Urbana, Ill 61803 (Professor Clark).
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