Microwave radiometry: its importance to the detection of cancer

The author discusses developments in the medical uses of microwave radiometry, particularly in relation to the early detection of cancer, as well as the significance of and progress in related antenna technology. In the treatment of cancer, microwave hyperthermia is accepted as an adjunct to radiation therapy in the treatment of superficial lesions. Although not as widely reported, the use of microwave radiometry as a noninvasive, passive technique for the early detection of cancer appears promising. Wider acceptance of these methods, however, awaits fundamental improvements in the ability to focus energy at depth in human tissue, an important and nontrivial antenna problem. Antenna development is described, and the improvements required if microwave technology is to provide a practical solution to the detection and treatment of cancer are indicated.>