Exam-style question
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How does the reflection of ultrasound waves at tissue boundaries relate to acoustic impedance?.
- A.Reflection increases with decreasing acoustic impedance.
- B.Reflection is independent of acoustic impedance.
- C.Reflection is maximized when acoustic impedances are equal.
- D.Reflection increases with increasing differences in acoustic impedance.
Model answer
What a good answer should say
- Reflection increases with increasing differences in acoustic impedance.
Explanation
Why this works
The reflection of ultrasound waves at tissue boundaries is significantly influenced by the differences in acoustic impedance. A larger difference in impedance results in a greater proportion of the ultrasound wave being reflected, which is vital for effective imaging.
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