Axial Mechanical Properties of Fresh Human Cerebral Blood Vessels

[+] Author and Article Information
Kenneth L. Monson, Werner Goldsmith

Department of Mechanical Engineering, University of California, Berkeley, CA 94720

Nicholas M. Barbaro, Geoffrey T. Manley

Department of Neurological Surgery, University of California, San Francisco, CA 94143

J Biomech Eng 125(2), 288-294 (Apr 09, 2003) (7 pages) doi:10.1115/1.1554412 History: Received April 01, 2002; Revised November 01, 2002; Online April 09, 2003
Copyright © 2003 by ASME
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Right temporal surface of brain during temporal lobectomy surgery. Arrow identifies suture used for in vivo length measurement. The dura has been pulled aside but the arachnoid remains intact.
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Photograph of sphere-beam impact dynamic testing setup
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Dynamic model for load cell—grip—vessel system
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Stress-stretch parameterization of example case. Toe and maximum modulus regions were fit using Eq. (2) and a line, respectively. Here, A=23.97,B=0.0036 MPa, and ModY=27.48 MPa.
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(a) Quasi-static and (b) dynamic image sequences for two arteries. Frame spacing is 0.4 seconds for (a) and 0.005 seconds for (b).
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Quasi-static and dynamic axial stress (first Piola-Kirchhoff)-stretch results for cortical arteries and veins
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Summary of mean toe-region and failure values for stress-stretch tests, by vessel type and testing rate. Toe-region curves were generated using A and B. Note that the lines connecting the yield and ultimate points are meaningless except to clarify which points are from the same group.
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Model-generated vessel load response, accompanied by its measured and simulated load cell force traces
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Comparison of stress-stretch behaviors from the current experiments with those reported in the literature for a variety of blood vessels. BV-bridging vein failure points for quasi-static and dynamic tests 11. MCA-subfailure major cerebral artery data 8. MCA II-failure data for major cerebral arteries 9. CCA, FemV, FemA, PopA-common carotid artery, femoral vein, femoral artery, popliteal artery 19.




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