Title :
Effects of anisotropy in cornea thermal conductivity on temperature profiles in RF thermokeratoplasty
Author :
Berjano, Enrique J. ; Saiz, Javier ; Ferrero, José M. ; Alió, Jorge L.
Author_Institution :
Inst. Oftalmologico de Alicante, Spain
fDate :
29 Oct-1 Nov 1998
Abstract :
This work presents a theoretical study on the effect of possible anisotropy of the thermal conductivity of the cornea during the heating with RF currents in radiofrequency thermokeratoplasty. The model is based on the finite element method and includes a fragment of cornea, aqueous humor and a stainless steel electrode on the cornea surface. The results reveal that the effect of the possible anisotropy in cornea thermal conductivity is more important during heatings of several seconds and negligible for short duration applications less than 100 ms
Keywords :
eye; finite element analysis; hyperthermia; physiological models; radiofrequency heating; temperature distribution; thermal conductivity; FEM model; RF coagulation; RF thermokeratoplasty; anisotropy effects; aqueous humor; axisymmetric model; computer simulation; cornea fragment; cornea thermal conductivity; heating with RF currents; stainless steel electrode; temperature profiles; Anisotropic magnetoresistance; Cornea; Electrodes; Finite element methods; Heating; Numerical models; Radio frequency; Steel; Temperature; Thermal conductivity;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.746983
