2-D Axisymmetric Finite Difference Modeling of Thermistor Probe Heating on the Kidney

Authors

Fredericka Brown, University of Nevada, Las VegasFollow
Robert F. Boehm, University of Nevada, Las VegasFollow
Gary Shen, University of Nevada, Las Vegas

Document Type

Conference Proceeding

Publication Date

7-21-2003

Publication Title

2003 ASME Summer Heat Transfer Conference (HT2003)

Publisher

ASME

Volume

2

First page number:

765

Last page number:

771

Abstract

Developing a means of determining whether or not there is adequate perfusion in a newly transplanted kidney is the impetus for this study. The concept analyzed is that of a self-heating thermistor probe located between the kidney and the adjacent body tissue, inserted during the transplant procedure. When appropriate perfusion is present in the kidney, more heat will be dissipated in the organ tissue than when perfusion is insufficient for transplant success. If the heat dissipation for a given probe temperature above the bulk tissue is monitored, this might be able to be used as an indicator of procedural success or failure. To assess the sensitivity of this approach a numerical model has been developed and is reported here. An axisymmetric two-dimensional finite-difference formulation is used. Results are shown using typical values of properties for perfused and non-perfused tissue. The sensitivity of the approach to these properties indicates the type of accuracy that will be required in the clinical application of the technique.

Keywords

Heating; Kidney; Kidneys – Transplantation; Mathematical models; Modeling; Perfusion (Physiology); Probes; Thermistors in medicine

Disciplines

Biomedical Devices and Instrumentation | Biomedical Engineering and Bioengineering | Equipment and Supplies | Mechanical Engineering | Nephrology | Surgical Procedures, Operative

Language

English

Comments

Conference Held: Las Vegas, Nevada, USA, July 21–23, 2003

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Brown, F., Boehm, R. F., Shen, G. (2003). 2-D Axisymmetric Finite Difference Modeling of Thermistor Probe Heating on the Kidney. 2003 ASME Summer Heat Transfer Conference (HT2003), 2 765-771. ASME.