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New stethoscope helps medics hear in loud environments

A new type of stethoscope will enable doctors to hear the sounds of the body in extremely loud situations, such as during the transportation of wounded soldiers in helicopters.

The stethoscope uses ultrasound technology, similar to that used to generate images of internal organs, muscles and unborn foetuses.

The ultrasound stethoscope is almost impervious to loud noise and is capable of making accurate readings at noise levels up to 120 decibels, similar to the volume experienced at the front row of a rock concert.