TY - JOUR
T1 - In vivo measurement of swine endocardial convective heat transfer coefficient
AU - Tangwongsan, Chanchana
AU - Will, James A.
AU - Webster, John G.
AU - Meredith, Kenneth L.
AU - Mahvi, David M.
N1 - Funding Information:
Manuscript received July 21, 2003; revised January 16, 2004. This work was supported by the National Institute of Health (NIH) under Grant HL56413 and Grant DK58839. Asterisk indicates corresponding author. C. Tangwongsan is with the Department of Electrical Engineering, Chula-longkorn University, Bangkok 10330, Thailand. J. A. Will is with the Department of Animal Health and Biomedical Sciences, University of Wisconsin, Madison, WI 53706 USA. *J. G. Webster is with the Department of Biomedical Engineering, University of Wisconsin, Madison, WI 53706 USA (e-mail: webster@engr.wisc.edu). K. L. Meredith, Jr., and D. M. Mahvi are with the Department of Surgery, University of Wisconsin, Madison, WI 53792 USA. Digital Object Identifier 10.1109/TBME.2004.828035
PY - 2004/8
Y1 - 2004/8
N2 - We measured the endocardial convective heat transfer coefficient h at 22 locations in the cardiac chambers of 15 pigs in vivo. A thin-film Pt catheter tip sensor in a Wheatstone-bridge circuit, similar to a hot wire/film anemometer, measured h. Using fluoroscopy, we could precisely locate the steerable catheter sensor tip and sensor orientation in pigs' cardiac chambers. With flows, h varies from 2500 to 9500 W/m2·K. With zero flow, h is approximately 2400 W/m2·K. These values of h can be used for the finite element method modeling of radiofrequency cardiac catheter ablation.
AB - We measured the endocardial convective heat transfer coefficient h at 22 locations in the cardiac chambers of 15 pigs in vivo. A thin-film Pt catheter tip sensor in a Wheatstone-bridge circuit, similar to a hot wire/film anemometer, measured h. Using fluoroscopy, we could precisely locate the steerable catheter sensor tip and sensor orientation in pigs' cardiac chambers. With flows, h varies from 2500 to 9500 W/m2·K. With zero flow, h is approximately 2400 W/m2·K. These values of h can be used for the finite element method modeling of radiofrequency cardiac catheter ablation.
KW - Cardiac radiofrequency ablation
KW - Convective heat transfer coefficient
KW - Endocardial convective heat transfer coefficient
KW - Heat convection
KW - Radiofrequency ablation
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U2 - 10.1109/TBME.2004.828035
DO - 10.1109/TBME.2004.828035
M3 - Article
C2 - 15311835
AN - SCOPUS:3242663546
SN - 0018-9294
VL - 51
SP - 1478
EP - 1486
JO - IEEE Transactions on Biomedical Engineering
JF - IEEE Transactions on Biomedical Engineering
IS - 8
ER -