ARDMS SPI Exam Review TEST 20 October 28, 2017 by Rana Waqar Leave a Comment 1. What can be said about the ensemble length of pulsed-wave Doppler?a. It is less than 3 pulses per scan lineb. It is more than 100 pulses per scan linec. It is about 10 to 20 pulses per scan lined. It is typically 02. What happens if blood flow is sampled in the center of laminar flow?a. There will be a higher velocity than if sampled toward the edgesb. There will be a slower velocity than if sampled toward the edgesc. It will be made up of many different velocitiesd. It will be turbulent3. Which of the following is false about color Doppler imaging?a. It is prone to aliasingb. It obtains mean velocity informationc. It uses autocorrelation as its signal processing techniqued. It can measure peak systolic and end diastolic velocities4. Which of the following is a property of power Doppler?a. Able to obtain velocity information and direction of flowb. Signal is obtained by detecting amplitude of shiftc. It is prone to aliasingd. Limited by perpendicular angle of incidence5. Assuming flow is constant, what happens in a region of blood vessel narrowing?a. There is a significant pressure increaseb. There is an increase in the velocity along with a corresponding increase in pressurec. There is an increase in the velocity along with a corresponding decrease in pressured. Velocity and pressure are unchanged6. Which of the following is true about the spectral Doppler envelope?a. It is thin when there are many different velocitiesb. It is thin with CW Dopplerc. It is thickened in the center of a laminar flow vesseld. It is thickened in the presence of turbulence7. What is the term for the pressure difference between the inside of a vein and the tissue outside?a. Hydrostatic pressureb. Autocorrelationc. Transmural pressured. Kinetic energy8. A proximal stenosis will look like what on the spectral waveform?a. Reversal of flow in diastoleb. Delay in the systolic upstrokec. Triphasic waveformd. Aliasing9. The end diastolic component is missing on a spectral waveform. Which of the following should be adjusted to fix this?a. Gainb. Scalec. Wall filterd. Frequency10. In the exercising patient, the distal arterioles are dilated. What type of flow pattern would most likely be demonstrated on spectral Doppler within the proximal vessels?a. Monophasicb. Biphasicc. Triphasicd. Venous For More questions please join Our facebook group: https://www.facebook.com/groups/249298882082586/?ref=br_rs
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