Attenuation

Question 1

Diffuse reflection is _____?

Answer 1

scattering of the soundwaves in diff directions when hitting rough or irregular surfaces like soft tissues
(creating speckled, scattered appearance)

Question 2

Specular reflection is ___?

Answer 2

when sound waves bounce back at a single angle from a large, smooth surface, such as bone, creating a strong, clear echo on the ultrasound image; essentially, producing a sharp, defined boundary

Question 3

Unfocussed Beams (near field)

Answer 3

has a self-focussing effect - decreases to the mi