Ultrasound waves are produced when an electric potential is applied to crystals of

Magnetic Resonance $(MR)$ images are derived from the proton bearing species present principally from water and:

The kidney dialysis machine was invented by

Haemodialysis means

Ultrasound imaging is useful in diagnosing the disease of

The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of