Question 1

Which change improves temporal resolution during color flow imaging?

Options :

A : Increase field of view

B : Decrease transmit frequency

C : Decrease packet size

D : Increase line density

Answer: C

Question 2

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 3

What is the relationship between overall gain and image brightness?

Options :

A : The higher the overall gain, the brighter the image

B : The lower the overall gain, the brighter the image

C : The higher the overall gain, the darker the image

D : There is no relationship between overall gain and image brightness

Answer: A

Question 4

Which change can be made in order to avoid exceeding the Nyquist limit?

Options :

A : Increase output power

B : Decrease output power

C : Increase pulse repetition frequency

D : Decrease pulse repetition frequency

Answer: C

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