SPI - ARDMS Mock Exam - Question and Answers

SPI - ARDMS Mock Exam 2022/2023 - Question and Answers Which of the following describes the difference between side lobes and grating lobes? 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