1.2 Ultrasound Flashcards
1
Q
Between what frequencies can the human ear detect sound waves?
A
20 Hz and 20,000 Hz
2
Q
Ultrasound waves are waves of frequency above…
A
20,000 Hz
3
Q
What can ultrasound be used for?
A
Diagnosis and treatments
4
Q
Why are ultrasound scans safer than xrays?
A
Because ultrasound scan is non ionising
