Noninvasive control of microwave hyperthermia by retro-focusing.
Phased arrays for hyperthermia application have numerous advantages. They have the ability to be focused onto a desired location, and have a slightly greater depth of penetration than single applicators. Their most significant drawback has been the inability to determine the appropriate phasing necessary to focus onto a tumor location. This paper presents simulated results of a novel method, designed to overcome this problem. By precisely determining the appropriate phase coefficients and utilizing the conjugated, incoherent tumor emissions, the array can be noninvasively controlled and retro-focused onto the tumor.
Sawyer
M D
MD
Martin Marietta Astro. Group, Space Systems Co., Denver, CO 80201.
Edrich
J
J
D006801:Humans; D006979:Hyperthermia, Induced / Q000295:instrumentation / Q000379:methods*; D008433:Mathematics; D008872:Microwaves / Q000627:therapeutic use*; D009369:Neoplasms / Q000628:therapy*