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Local tumor hyperthermia using a computer‐controlled microwave system
Author(s) -
Magin R. L.,
Fu T. S.,
Beard R. E.,
Cain C. A.
Publication year - 1982
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.2250030308
Subject(s) - microwave , thermocouple , hyperthermia , microwave power , biomedical engineering , power (physics) , temperature control , materials science , sampling (signal processing) , electrical engineering , computer science , engineering , physics , telecommunications , mechanical engineering , filter (signal processing) , quantum mechanics , meteorology
Abstract A minicomputer‐based system was designed to control the microwave (2.45‐GHz) power to four local hyperthermia applicators. Errors in temperature measurement, due to electromagnetic field interactions with small thermocouple probes, are minimized by sampling the temperature only when the microwave power is off. The programmable controller can regulate the temperature in tumors in 0.1 °C increments from 30 to 60 °C. This technique reduces temperature differences throughout the tumor at steady state to less than 0.4 °C and prevents skin burns.