*Attenuation/Sound Properties

Question 1

Frequency in audible range

Answer 1

20 Hz - 20,000 Hz

Question 2

If the stiffness of a medium increases, the propagation speed will

Answer 2

Increase

Question 3

Attenuation occurring as sound propagates through each CM of soft tissue is =

Answer 3

Ac for soft tissue = 1/2 operating frequency

Question 4

Spatial defines

Answer 4

Space

Question 5

What will decrease the propagation speed of a wave:

Increasing stiffness or density of the medium

Answer 5

Increasing density will decrease propagation speed

Question 6

For short pulses, the Q factor is =

Answer 6

Number of cycles in a pulse

Q=n

Question 7

What is impedance?

what is proportional to the impedance of a medium (2)

Answer 7

How much will reflect, how much will transmit from one medium to the next?

Propagation speed and density are directly related

Question 8

Incident beam is also the

Answer 8

Reflection angle

Question 9

*Penetration depth AKA

What is the formula

Answer 9

Half value layer

HVL = 6/frequency