Write the clinical significance o ultra sonogram.

Explanation

1. Ultrasound waves are used to image the foetus at different stages of pregnancy to study the progress of the developing foetus.
2. They are used to hear foetal heart sound, blood flow, etc.
3. Used, in echocardiogrphy to diagnose the damages in heart.
4. Used for diagnosis of tumours, gall stones, kidney stones, obstruction in he genital tracts.