The application of Doppler effect to approximate the rate of change of volume of the lungs

Abstract

The use of sound in probing the internal organs has proven to be vital as it is a non-invasive means of acquiring information about the internal area of the desired organ. The Doppler Effect phenomenon is employed in this research to calculate the frequency shift of the lungs during respiration. Through this manner, the rate of change of volume of the lungs can be approximated.

Keywords: Doppler Effect, frequency shift, expansion and contraction of lungs, rate of change of volume.