A finite element model for ice ball evolution in a multi-probe cryosurgery.
Comput Methods Biomech Biomed Engin
; 6(3): 197-208, 2003 Jun.
Article
en En
| MEDLINE
| ID: mdl-12888431
ABSTRACT
The ice formation in a water body is examined for the computation of temperature field, phase change and a moving ice-water interface whose location is not known á priori. This is classically referred to as the Stefan problem [Rubinstein, L.I. (1971) The Stefan Problem (American Mathematical Society, Providence, Rhode Island 02904]. Based on the Duvaut [Duvaut, G. (1973) "Résolution d'un probléme Stefan" C.R. Acad Sci. Paris 276, 1461-1463] transformation, the governing equations for heat conduction are formulated within a variational principle that is readily amenable to a standard finite element solution without remeshing. Numerical simulation results pertaining to the freezing of tumour tissue in a multi-cryoprobe cryosurgery are presented. These results lend both quantitative and graphical support to the current empirical standards of "effective therapy" in view of refining clinical applications.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Termografía
/
Criocirugía
/
Congelación
/
Hielo
/
Modelos Biológicos
/
Neoplasias
Tipo de estudio:
Evaluation_studies
/
Guideline
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Comput Methods Biomech Biomed Engin
Asunto de la revista:
ENGENHARIA BIOMEDICA
/
FISIOLOGIA
Año:
2003
Tipo del documento:
Article
País de afiliación:
Canadá