Exam-style question
Try this first
What happens to ultrasound waves at tissue boundaries?.
- A.They are absorbed completely
- B.They are reflected based on acoustic impedance
- C.They pass through without any change
- D.They are converted into thermal energy
Model answer
What a good answer should say
- They are reflected based on acoustic impedance
Explanation
Why this works
Ultrasound waves are reflected at tissue boundaries due to differences in acoustic impedance, which determines how much of the wave is reflected versus transmitted.
Common mistake
No common mistake is linked to this question yet.