Q1254
The waves used in sonography are
A.
Micro waves
B.
Infra-red waves
C.
Sound waves
D.
Ultrasonic waves
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Ultrasound or ultrasonography is a medical imaging technique that uses high frequency sound waves and their echoes. The technique is similar to the echolocation used by bats, whales and dolphins, as well as SONAR used by submarines.