title: Effect of field shaping on thermal pattern produced by external microwave.
abstract: Modification of external microwave heating pattern can be useful clinically to reduce undesired coupling to adjacent bone or soft tissues particularly in the head and neck region. A static phantom was used to measure the effect of symmetric and asymmetric shielding of part of the microwave field from a BSD MA 150 microwave applicator. Thermal patterns were altered in a reliable predictable pattern. This method has been used clinically with improved patient tolerance.
authors.affiliation: Department of Radiation Oncology, Loma Linda University Medical Center, CA 92354.
authors.forename: W J
authors.initials: WJ
authors.lastname: Spanos
authors.forename: J
authors.initials: J
authors.lastname: Thompson
mesh_terms: D003972:Diathermy / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D008961:Models, Structural; D011835:Radiation Protection / Q000295:instrumentation / Q000379:methods