Diagnostic Ultrasound 1

Question 1

Acoustic pressure

Answer 1

difference in pressure from the ambient level p_0
p_t - p_0 = p

Question 2

bulk modulus

Answer 2

stiffness of the medium, the relative change in density of a material induced by an applied pressure

Question 3

sound speed and bulk stiffness correlation

Answer 3

positive

Question 4

Time averaged intensity

Answer 4

average intensity over a pulse/ pulse repetition period