Question

You are imaging a regular round mass in the liver that has a much slower propagation speed than liver tissue.

What sound-tissue interaction will be encountered as the ultrasound propagates through this interface?
a) refraction
b) reflection
c) absorption
d) scattering
e) all of the above

Answer 1

The sound-tissue interaction encountered when ultrasound propagates through a round mass in the liver with a slower propagation speed than liver tissue is reflection.

Step-by-step explanation:

The sound-tissue interaction encountered when ultrasound propagates through a round mass in the liver with a slower propagation speed than liver tissue is reflection. The sound-tissue interaction encountered when ultrasound propagates through a round mass in the liver with a slower propagation speed than liver tissue is reflection.

When the ultrasound reaches the interface between the round mass and the liver tissue, some of the wave energy will be reflected back towards the transducer. This is because there is a difference in acoustic impedance between the two media, causing some of the wave energy to bounce back.