Vascular impedance represents the opposition to periodic blood flow though a network of vessels and is a good choice for use as a boundary condition for hemodynamic modeling. Vascular impedance can be computed using electrical analogs, such as two or three element Windkessel models, or computed from geometry using Womersley’s input impedance equations [3]. The challenges associated with using electrical analogs are the need for experimental data to determine appropriate component values and in determining an appropriate methodology to fit the experimental data to the simplified model. The challenges associated with using a geometry-based method are the necessity of knowing the geometry being modeled and the requirement of a periodic solution. While Windkessel models are routinely used in analyses, little detail is provided as to how these R and C parameters are extracted from the impedance spectra. Therefore, we examine the relative importance of matching different characteristics of impedance spectra to the resulting pressure and flow relationships.
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ASME 2009 Summer Bioengineering Conference
June 17–21, 2009
Lake Tahoe, California, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4891-3
PROCEEDINGS PAPER
Comparison of Methods for RCR Component Selection From Computational Model Impedance Spectra
Lucy E. Perkins,
Lucy E. Perkins
North Carolina State University - University of North Carolina at Chapel Hill, Chapel Hill, NC
Search for other works by this author on:
Brooke N. Steele
Brooke N. Steele
North Carolina State University - University of North Carolina at Chapel Hill, Chapel Hill, NC
Search for other works by this author on:
Lucy E. Perkins
North Carolina State University - University of North Carolina at Chapel Hill, Chapel Hill, NC
Brooke N. Steele
North Carolina State University - University of North Carolina at Chapel Hill, Chapel Hill, NC
Paper No:
SBC2009-206533, pp. 827-828; 2 pages
Published Online:
July 19, 2013
Citation
Perkins, LE, & Steele, BN. "Comparison of Methods for RCR Component Selection From Computational Model Impedance Spectra." Proceedings of the ASME 2009 Summer Bioengineering Conference. ASME 2009 Summer Bioengineering Conference, Parts A and B. Lake Tahoe, California, USA. June 17–21, 2009. pp. 827-828. ASME. https://doi.org/10.1115/SBC2009-206533
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