Free ARDMS SPI Exam Questions

Become ARDMS Certified with updated SPI exam questions and correct answers

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Total 215 Questions | Updated On: Aug 19, 2026

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Question 1

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

A : Pressure gradient

B : Length of vessel

C : Viscosity of the fluid

D : Vessel radius

Answer: D

Question 2

What limits the maximum imaging depth for a given transducer?

A : Amplitude

B : Frequency

C : Propagation speed

D : Focal depth

Answer: B

Question 3

Which factor affects temporal resolution?

A : Display depth

B : Time gain compensation

C : Overall gain

D : Log compression

Answer: A

Question 4

What is an advantage of pulsed-wave Doppler over continuous-wave Doppler?

A : Increased sensitivity to slow flow

B : Unlimited maximum detectable velocity

C : Range resolution

D : High signal-to-noise ratio

Answer: C

Question 5

What is the primary purpose of backing material in transducers?

A : Improving axial resolution

B : Increasing the number of cycles in a pulse

C : Preventing electrical shock to the operator or patient

D : Improving acoustic impedance matching

Answer: A

Page: 1 / 43

Total 215 Questions | Updated On: Aug 19, 2026

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