Thermal Mapping, via Liquid Crystals, of the Temperature Field near a Heated Surgical Probe
MetadataShow full item record
This paper discusses the use of heat for producing clinical lesions in tissue and presents the design and analysis of a resistively heated surgical probe. The probe surface temperature is accurately maintained and controlled by using a Wheatstone bridge. The probe was embedded in a clear agar–water test medium, and the temperature field generated by the probe was measured with liquid crystals, a material that provides a visual display of certain isotherms. Experimental results compare within approximately 10 percent of a two-dimensional numerical solution. A one-dimensional theoretical model is also developed which examines the influence of blood flow on the temperature field.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Chen, Yuchun; Chu, Peter C.; Wang, Guihua (2002);The autocorrelation functions of temperature and salinity in the three basins (Ulleung, Japan, and Yamato Basins) of the Japan/East Sea are computed using the U.S. Navy’s Master Oceanographic Observational Dataset for ...
Kempf, Cecil J.; Wosser, Joseph L. (Cambridge, Massachusetts. Massachusetts Institute of Technology, 1957-06);An experimental study is made of the temperature of a hot surface required to ignite ethanol-air mixtures of different fuel-air ratios in steady flow. The mixture at a controlled free-stream velocity, density and temperature ...
Overland, James E.; Guest, Peter S. (1991);Arctic cooling through the fall‐winter transition is calculated from a coupled atmosphere‐sea ice thermal model and compared to temperature soundings and surface measurements made north of Svalbard during the Coordinated ...