ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

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Prepare effectively for the ARDMS (American Registry for Diagnostic Medical Sonography) Test with our comprehensive study materials and tips. Master the exam format and content to pass with flying colors!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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While using pulsed wave Doppler, the sonographer believes that the measurements are not accurate. After switching to a 4.5 MHz continuous wave (CW) Doppler at a depth of 5 cm, what will the maximum velocity cap be?

There will not be a maximum velocity cap with CW Doppler.
45 cm/s
150 cm/s
This cannot be determined with the given information.

The correct answer is: There will not be a maximum velocity cap with CW Doppler.

CW Doppler does not have a maximum velocity cap because it continuously emits and receives sound waves, allowing for accurate measurements of high velocities without aliasing. This is in contrast to pulsed wave Doppler, which has a limited sampling rate and can result in inaccurate measurements of high velocities. Therefore, option A is correct and the other options are incorrect. Option B and C provide specific velocity values which may not be applicable in all cases, while option D suggests that there may be a way to determine the maximum velocity cap with the given information, which is not the case.