Question 1

What happens to the amount of attenuation if the path length is doubled?

Options :

A : Quadrupled

B : Doubled

C : Halved

D : Quartered

Answer: B

Question 2

Which outcome is an advantage of more pulses in an ensemble length?

Options :

A : Reduced ghosting artifact

B : Increased accuracy of velocity measurement

C : Improved temporal resolution

D : Increased line density

Answer: B

Question 3

According to Poiseuille's law, a change in which parameter would have the greatest influence on blood flow?

Options :

A : Pressure gradient

B : Length of vessel

C : Viscosity of the fluid

D : Vessel radius

Answer: D

Question 4

Which control should a sonographer use to change contrast resolution?

Options :

A : Reject

B : Output power

C : Gain

D : Dynamic range

Answer: D

Question 5

During 3-D volume acquisition, the quality of the images is most dependent upon which factor?

Options :

A : Number of slices acquired

B : Power output

C : Rendering method utilized

D : Speed of post-processing image compression

Answer: A