ARDMS SPI Exam Review: Free Practice Test 20 | Ultrasound Physics October 28, 2017 By Rana Waqar 1 Comment Master ultrasound physics with our free ARDMS SPI Exam Review Test 20. Check your answers, get expert explanations, and pass your SPI registry exam! Δ 1. What can be said about the ensemble length of pulsed-wave Doppler? a. It is less than 3 pulses per scan line b. It is more than 100 pulses per scan line c. It is about 10 to 20 pulses per scan line d. It is typically 0 2. 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 edges b. There will be a slower velocity than if sampled toward the edges c. It will be made up of many different velocities d. It will be turbulent 3. Which of the following is false about color Doppler imaging? a. It is prone to aliasing b. It obtains mean velocity information c. It uses autocorrelation as its signal processing technique d. It can measure peak systolic and end diastolic velocities 4. Which of the following is a property of power Doppler? a. Able to obtain velocity information and direction of flow b. Signal is obtained by detecting amplitude of shift c. It is prone to aliasing d. Limited by perpendicular angle of incidence 5. Assuming flow is constant, what happens in a region of blood vessel narrowing? a. There is a significant pressure increase b. There is an increase in the velocity along with a corresponding increase in pressure c. There is an increase in the velocity along with a corresponding decrease in pressure d. Velocity and pressure are unchanged 6. Which of the following is true about the spectral Doppler envelope? a. It is thin when there are many different velocities b. It is thin with CW Doppler c. It is thickened in the center of a laminar flow vessel d. It is thickened in the presence of turbulence 7. What is the term for the pressure difference between the inside of a vein and the tissue outside? a. Hydrostatic pressure b. Autocorrelation c. Transmural pressure d. Kinetic energy 8. A proximal stenosis will look like what on the spectral waveform? a. Reversal of flow in diastole b. Delay in the systolic upstroke c. Triphasic waveform d. Aliasing 9. The end diastolic component is missing on a spectral waveform. Which of the following should be adjusted to fix this? a. Gain b. Scale c. Wall filter d. Frequency 10. 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. Monophasic b. Biphasic c. Triphasic d. Venous
REGINA Ekanem says
How one get the correct answer please?