抄録
For successful operation of brain tumors, it is essential to minimize hemorrhage during neurosurgical operation, and to destroy any adjacent tumor cells. A newly developed technique for coagulating brain tumors as an operative procedure by using microwave was investigated. It penetrates a distance and destroys the tumor tissue with its thermal effect.
For successful tissue coagulation, it is required to concentrate microwave energy to a narrow region. For this purpose, a kind of antenna was contrived and the thermal distribution in the vicinity of the antenna was investigated both theoretically and experimentally. It revealed that the near-by field of the antenna could make an adequate thermal distribution for local tissue coagulation. An experimental equipment was made for 2.45 GHz using magnetron as the microwave source.
The desirable local coagulation on a dog's brain tissue was achieved with this experimental equipment. This method of local coagulation by microwave will facilitate more effective operation on tumors without unnecessary bleeding and scattering of tumor cells and will destroy as much tumor tissues as possible This method of tissue coagulation is considered applicable to treating not only brain tumors but also many other tumors and diseases.
