Technical Briefs

Calculation of Human Femoral Vein Wall Parameters In Vivo From Clinical Data for Specific Patient

[+] Author and Article Information
Blas Herrera

e-mail: blas.herrera@urv.net

Gerard Fortuny

Department of Computer Engineering and Mathematics,
Universitat Rovira i Virgili,
Avinguda Països Catalans 26,
43007, Tarragona, Spain

Francesc Marimón

Department of Internal Medicine,
Sant Joan University Hospital,
Universitat Rovira i Virgili,
Avinguda Països Catalans 26,
43007, Tarragona, Spain

1Corresponding author.

Contributed by the Bioengineering Division of ASME for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received June 15, 2011; final manuscript received October 3, 2012; accepted manuscript posted October 25, 2012; published online November 27, 2012. Assoc. Editor: Naomi Chesler.

J Biomech Eng 134(12), 124501 (Nov 27, 2012) (4 pages) doi:10.1115/1.4007948 History: Received June 15, 2011; Revised October 03, 2012; Accepted October 25, 2012

A common problem in the elaboration of biomechanical models is determining the properties and characteristics (measures) of the physical behavior of in vivo tissues in the human body. Correct estimates must be made of the tissue's physical properties and its surroundings. We suggest a method to compute the constitutive modeling of venous tissue, for every specific patient, from clinically registered ultrasounds images. The vein is modeled as a hyperelastic, incompressible, thin-walled cylinder and the membrane stresses are computed using strain energy. The approach is based on a strain-energy function suggested by Holzapfel capturing the characteristic nonlinear anisotropic responses of femoral veins with its collagen fibers.

Copyright © 2012 by ASME
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Grahic Jump Location
Fig. 1

Circumferential (thick lines) and radial (thin lines) Cauchy stress contours in the (midwall) stretch plane for the femoral vein from a nonpathologic subject

Grahic Jump Location
Fig. 2

Pressure–inner diameter cycles (marked by squares) from the values for the femoral vein. The solid line indicates the pressure–inner diameter relation predicted by the constitutive modeling.




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