A regular thump of the heart, a phantom wind whistling in the veins, the roar of air entering the lungs, and the rumbling of contracting muscles are sounds that make up a symphony of a healthy body. An irregularity in the rhythm or a change of pitch may indicate, to the trained medical ear, thatsomethingiswrong. Anthony Smith takes a journey in sound around the human body and shows how changes in sound patterns may be used to detect and locate serious diseases.
Producer MICHAEL BRIGHT
Science on Radio 4: see letters page