Question

Ravi is a poor labourer. for last few days he used to feel pain, in his lower abdomen as

well as in his back. When he went to a doctor. the doctor prescribed some tests as well as

ultrasonography of lower abdomen. When Rita who lived nearby came to know of this,

She decided to give financial help to Ravi, after tests and ultrasound it was found that

there was a stone in the left kidney of Ravi. Rita asked her neighbours to contribute for

the operation. All neighbours contributed for the operation as well as subsequent

medical expenses. Now Ravi is absolutely fit.

What is ultrasound? Explain its working principle. What values are Shown by Rita and

her neighbours?​

Answer 1

Ultrasounds are sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is no different from 'normal' (audible) sound in its physical properties, except in that humans cannot hear it. It's purpose is to  examine the kidneys, ureters (tubes connecting your kidneys to your bladder) and surrounding structures.