FDTD electromagnetic and thermal analysis of interstitial hyperthermic applicators

• Published in: IEEE transactions on biomedical engineering Vol. 42; no. 10; pp. 973 - 980
• Main Authors: Gentili, G.B., Leoncini, M., Trembly, B.S., Schweizer, S.E.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.10.1995; Institute of Electrical and Electronics Engineers
• Subjects: Applicators; Biological and medical sciences; Dipole antennas; Electromagnetic analysis; Electromagnetic radiation; Finite difference methods; Hyperthermia; Imaging phantoms; Induced hyperthermia. Cryotherapy; Insulation; Medical sciences; Temperature distribution; Time domain analysis; Treatment with physical agents; Treatment. General aspects; Tumors; Test objet; Temperature; Applicator; Time domain method; Distribution; Electromagnetic; Numerical simulation; Interstitial; Thermal analysis; Technique; Experimental study; Biomedical engineering
• ISSN: 0018-9294; 1558-2531
• DOI: 10.1109/10.464371

The electromagnetic and thermal behavior of interstitial applicators was analyzed by using the finite-difference time-domain method. Two configurations were considered: a simple insulated dipole antenna radiating in a layered tissue, and an air cooled applicator radiating in a tissue-equivalent phantom. The proposed approach allows a detailed modeling of the complete structure of the applicator. Furthermore, specific absorption rate and temperature distributions can be determined considering real clinical or experimental conditions. The temperature distribution for the air cooled applicator has been compared with experimental results.< >