Effect of field shaping on thermal pattern produced by external microwave.
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.
Spanos
W J
WJ
Department of Radiation Oncology, Loma Linda University Medical Center, CA 92354.
Thompson
J
J
D003972:Diathermy / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D008961:Models, Structural; D011835:Radiation Protection / Q000295:instrumentation / Q000379:methods