MULTIFREQUENCY MICROWAVE RADIOMETRY FOR NONINVASIVE THERMOMETRY USINGA NEW TEMPERATURE PROFILE MODEL FUNCTION

Multifrequency microwave radiometry has been investigated for non-inva sive measurement of temperatures in a human body. In this paper, we pr opose a new temperature profile model function, which is based on ther mo-physiological considerations, for use in a model fitting method of retrieving a temperature profile from a set of multifrequency radiomet ric data. The microwave radiometric technique using the new model func tion was tested by numerical simulations against animal experiment and clinical data reported elsewhere. The results show that the microwave radiometric technique can be used effectively to measure temperature profiles in tissues over a depth range from 0 to about 4.5 cm.