SPI - ARDMS Mock Exam 2022/2023 - Question and Answers
Which of the following describes the difference between side lobes and grating lobes?
... [Show More] Correct Ans ~ Grating lobes are seen with arrays and side lobes are seen with single element probes
Color Doppler is evaluated with what type of phantom? Correct Ans ~ Fluid filled phantom
If the ultrasound image is too black and white, which of the following will add more levels gray to the image? Correct Ans ~ Decrease rejection levels
If you obtain a peak velocity of 60 cm/s with the Doppler correction angle set to 0 degrees and it should have been set at 60 degrees, what is the actual velocity in the vessel? Correct Ans ~ 120 cm/s
The matching layer for a transducer is usually made of plastic and is approximately _____________. Correct Ans ~ 1/4 of the probe wavelength in thickness
What is the twinkle artifact? Correct Ans ~ Mosaic colors displayed in a linear pattern posterior to a dense object, such as a renal stone
The AIUM has stated that there have been no confirmed reports of thermal bioeffects to living mammals with ultrasound exposure, if the temperature rise in tissue is less than: Correct Ans ~ 2 degrees Celsius
Increasing the number of pulses in a color packet will: Correct Ans ~ increase frame time
Harmonic Imaging leads to: Correct Ans ~ Degraded image clutter
____________ uses the amplitude of the Doppler shift and the intensity of the red blood cells to be able to generate color on the image independent of the angle insonation Correct Ans ~ Power Doppler
What effect does frequency compounding have on the image? Correct Ans ~ reduce speckle artifact
Tissue Doppler imaging is commonly used in ___________ Correct Ans ~ echocardiography
If you change from a 4 MHz to 2 MHz transducer frequency what happens to hte detected Doppler shift? Correct Ans ~ It will decrease by 50%
Which of the following console controls can be used to increase the number of scan lines used in a color image? Correct Ans ~ persistence
What system control should be turned off when attempting to demonstrate posterior shadowing from a suspected renal or biliary stone? Correct Ans ~ Spatial compounding
The coupling gel is used for ultrasound exams provides the same function as what transducer component? Correct Ans ~ matching layer
_________ is defined as the time it takes to complete one cycle Correct Ans ~ Period
Glutaraldehyde is used to: Correct Ans ~ disinfect the transducer after a patient exam
What is the function used with color Doppler analysis to assess the data from multiple sampling sites and produce a display representing mean flow velocities? Correct Ans ~ Autocorrelation
Sound energy that arrives at the transducer befor the rest of the original pulse finishes transmitting will cause what acoustic artifact? Correct Ans ~ Range ambiguity
Pulse inversion imaging improves _________ while degrading ____________. Correct Ans ~ Spatial Resolution
Temporal Resolution
If the reflector dimensions are less than the wavelength of the pulse, ________________ occurs. Correct Ans ~ Diffuse scatter
Which of the following will increase spectral broadening on the image? Correct Ans ~ Increased sample volume size
Which of the following is inversely related to the Doppler shift? Correct Ans ~ Speed of the sound in tissue
The sonographer may avoid aliasing by altering the: Correct Ans ~ Image depth
Which of the following is a sound parameter that is NOT processed by the pulse echo system? Correct Ans ~ Blood flow velocity
What system parameter is evaluated by scanning all three sides of the AIUM test object and compiling the images? Correct Ans ~ Registration
Which of the following will improve slice thickness resolution? Correct Ans ~ Adding an external focusing lense
Lateral resolution is best at what location in the beam? Correct Ans ~ Focal point
Increasing the edge enhancement setting will: Correct Ans ~ Increase image contrast
At the end of a 2nd trimester fetal scan you notice the overall gain was set to the maximum level during the exam. Which of the following statements is true? Correct Ans ~ None of the above
Which of the following transducers provides the best spatial resolution of the cardiac structures? Correct Ans ~ Transesophageal array
Which of the following characteristics of an LCD monitor determines the spatial resolution of the 2D image? Correct Ans ~ Number of pixels
Which of the following describes the correct way to measure the acceleration time on a Doppler waveform? Correct Ans ~ Place a caliper at the onset of the systolic upstroke and at the systolic peak
While scanning the carotid artery, you obtain a Doppler tracing. Before recording the image you increase the cursor angle from hte last ample taken and record the new image. How will this change affect the calculated velocity in the new sample? Correct Ans ~ Increase [Show Less]