Thermal conductivity and diffusivity in swine myocardium

Author

Bhavaraju, Naresh C. ; Valvano, Jonathan W.

Author_Institution

Dept. of Biomed. Eng., Texas Univ., Austin, TX, USA

Volume

1

fYear

1997

fDate

30 Oct-2 Nov 1997

Firstpage

148

Abstract

This paper describes an experimental technique for the measurement of thermal conductivity, and thermal diffusivity using self-heated thermistors. Thermal probes are constructed by placing a miniature thermistor at the tip of a plastic catheter. The volume of tissue over which the measurement occurs depends on the surface area of contact between the thermistor and the tissue. Electrical power is delivered to a spherical thermistor positioned invasively within the tissue of interest. The electrical power and resulting temperature rise are measured by microcomputer-based instrument. The instrument is calibrated by operating the system in media of known thermal properties. Thermal property measurements in swine myocardium were measured at 27, 37 and 50°C

Keywords

biodiffusion; biological techniques; biothermics; cardiology; muscle; thermal conductivity measurement; thermal diffusivity; thermistors; 27 C; 37 C; 50 C; contact surface area; experimental technique; known thermal properties; microcomputer-based instrument; miniature thermistor; plastic catheter; self-heated thermistors; spherical thermistor; swine myocardium; thermal probes; thermal property measurements; tissue volume; Area measurement; Catheters; Conductivity measurement; Instruments; Myocardium; Plastics; Probes; Temperature measurement; Thermal conductivity; Thermistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-4262-3

Type

conf

DOI

10.1109/IEMBS.1997.754488

Filename

754488