Novel conformal technique to reduce staircasing artifacts at material boundaries for FDTD modeling of the bioheat equation.
Phys Med Biol
; 52(15): 4371-81, 2007 Aug 07.
Article
in En
| MEDLINE
| ID: mdl-17634638
ABSTRACT
The modeling of thermal effects, often based on the Pennes Bioheat Equation, is becoming increasingly popular. The FDTD technique commonly used in this context suffers considerably from staircasing errors at boundaries. A new conformal technique is proposed that can easily be integrated into existing implementations without requiring a special update scheme. It scales fluxes at interfaces with factors derived from the local surface normal. The new scheme is validated using an analytical solution, and an error analysis is performed to understand its behavior. The new scheme behaves considerably better than the standard scheme. Furthermore, in contrast to the standard scheme, it is possible to obtain with it more accurate solutions by increasing the grid resolution.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Body Temperature
/
Body Temperature Regulation
/
Thermography
/
Artifacts
/
Energy Transfer
/
Hot Temperature
/
Models, Biological
Type of study:
Diagnostic_studies
/
Evaluation_studies
/
Prognostic_studies
Limits:
Animals
/
Humans
Language:
En
Journal:
Phys Med Biol
Year:
2007
Document type:
Article