Biotechnology and Its Applications Question 35
35. Ultrasound of how much frequency is beamed into human body for sonography ?
(a) 15 - $30 MHZ$
(b) 1 - $15 MHZ$
(b) 45 - $70 MHZ$
(d) 30 - $45 MHZ$.
Show Answer
Answer : b
Hints & Solutions
(b) Ultrasound imaging has frequency range 1 - $15 MHz$ which has become part of our lives in the last decade. We are now all familiar with the blurry black and white sonograms (ultrasound pictures) that show the unborn baby inside the mother’s uterus. Although it may take a little imagination on our part to understand that a round circle is the baby’s head, that does not prevent a proud mother-to-be from showing off her first baby picture.
