Temperature and Amplitude Dependence of Acoustic Absorption in Tissue

Abstract

The acoustic-intensity-absorption coefficient of tissue of the central nervous system has been determined at the sound frequency of 1 Mc/sec in the temperature range from 2 to 28°C at incident sound intensities in the approximate range from 5 to 200 w/cm2. The absorption coefficient exhibits an increase with increasing temperature and no variation with acoustic intensity. (This research was supported by contract USPH B-1017, Institute of Neurological Diseases and Blindness, National Institutes of Health, Public Health Service, U. S. Department of Health, Education, and Welfare.)