ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

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Prepare for the ARDMS Exam with our comprehensive quiz. Engage with multiple-choice questions designed to build your understanding and confidence. Test your knowledge in diagnostic medical sonography and get exam-ready!

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Which is NOT a reason a sonographer would choose to use power Doppler during a renal duplex exam?

Aliasing will not occur with power Doppler.
The sensitivity of power Doppler is greater than that of color Doppler
The amplitude of the signal is displayed with power Doppler
The velocity of the blood is accurately measured with power Doppler

The correct answer is: Aliasing will not occur with power Doppler.

In a renal duplex exam, a sonographer may choose to use power Doppler for various reasons, such as visualizing low flow states and improving sensitivity to detect blood flow. One of the reasons a sonographer would not choose to use power Doppler is mentioned in option A, which states that aliasing will not occur with power Doppler. This statement is incorrect because like color Doppler, power Doppler is susceptible to aliasing artifacts, especially in cases of high velocities or turbulent flow. The other options discuss the advantages and characteristics of power Doppler, making them reasons why a sonographer would choose to use this mode during a renal duplex exam. The sensitivity of power Doppler being greater than color Doppler helps in detecting low flow states, the display of the amplitude of the signal aids in highlighting flow strength, and although power Doppler does not measure blood velocity accurately, it does provide information about the presence and direction of flow. Therefore, the correct answer is A.