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2025 - 2026 SPI-ARDMS|ACTUAL EXAM QUESTIONS
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What is dynamic aperture? A.aperture that varies with transmit frequency b.aperture that decreases as a function of time C.aperture that increases with increasing focal length d.aperture that changes as a function of frame rate Which acoustic variable is penetration depth inversely related? a.frequency B.wavelength c.period d.propagation speed Which imaging mode requires a broadband transducer? A.continuous wave doppler B.pulsed wave doppler c.color flow imaging d.harmonic imaging What is the doppler shift frequency? A.recieved ultrasound frequency multiplied by the transmitted ultrasound frequency b.difference between the transmitted ultrasound frequency and the received ultrasound frequency C.sum of the transmitted and received ultrasound frequencies D.ratio of the transmitted ultrasound frequency to the received ultrasound frequency What is the potential effect of increasing the pulse repetitionfrequency(prf)?
A.depth ambiguity b.decreased frame rate c.poor spatial resolution d.decreased penetration What is an advantage of using pulsed wave doppler compared tocontinuous wave doppler? A. Higher echo sensitivity b.ability to select sample depth c.decreased display of aliasing d.improved temporal resolution D - answer what affects the beam width in the near field? A.pulse repetition frequency B. Pulse duration c.frame rate d.transducer aperture D - answer what is the advantage of using pulsed-wave doppler versus continuous-wave doppler? A.allows measurement of higher velocities b.increases range ambiguity C.reduces the potential for aliasing d.provides depth specificity D - answer which parameter is target group c evaluating based on the image? A.dead zone B.dynamic range
d.muscle D - answer which term describes the averaging together of scan lines from multipleangles to create one image? A. Harmonic imaging b.realtime three dimensional imaging c.elastography d.spatial compounding A - answer which variable can cause an acoustic shadow artifact? A.small acoustic impedance mismatch B. Refraction c.perpendicular incidence d.low attenuation B - answer what does coded excitation improve in addition to penetration? A.lateral resolution B.signal-to-noise ratio c.frame rate d.dynamic range A - answer how is lateral resolution determined for a pulsed-echo system using atissue- mimicking test object? A.by observing spaces between reflectors perpendicular to the beamb B yobserving spaces between reflectors along the beam path C.by observing position of deepest visible reflector along the beam path D.by observing position of deepest visible reflector perpendicular to the beam path A - answer which variable caused the color change from blue to red of the vessel inthis
image? A. Change in vessel direction b.color scale set to low c.turbulent flow D.severe stenosis C - answer which artifact is indicated by the arrows in this image? A.shadow produced by the diaphragm B. Acoustic enhancement c.comet tail D.mirror image D - answer which control improves the effects of attenuation? A.dynamic range B.pulse inversion c.multiple focal zones d.time gain compensation A - answer which doppler angle to flow results in the greatest absolute doppler shift? A. degrees B.15 degrees c.45 degrees d.60 degrees A - answer what term describes blood flow changes in response to respiration?A.phasic B.parabolic c.spontaneous d.pulsatile B - answer an increase in which parameter will improve the accuracy of velocity
b.b-mode C.a-mode d.m-mode A - answer according to alara (as low as reasonably achievable) guidelines, whichparameter should be minimized? A.transmit power b.frequency C.time gain compensation d.overall gain D - answer what is an advantage of using pulsed-wave doppler versus continuouswave doppler? A.allows measurement of higher velocities b.increases range ambigutiy C.reduces the potential for aliasing d.provides depth specificity C - answer what is demonstrated in this image produced by a linear array transducer placed on a uniform tissue-mimicking phantom? A. Time gain compensation not set properly.B. System has low dynamic range. C. Transducer crystals are damaged.D. Focus control is malfunctioning. 3cm - answer what is the distance to the interface if the round trip time for a soundwave is 39 microseconds? Low frequency, low amplitude - answer which signals are eliminated by the wall filterin a
spectral doppler display? Two images demonstrating the same pathology from different scan planes - answer at minimum, what is required when documenting a pathology discovered during an examination? Increased by 2 times - answer if the diameter of the sound beam is halved byfocusing, what happens to the intensity A - answer which parameter would change on a phantom test if the spatial pulselength were made longer? A. Axial resolution b. Lateral resolution C. Horizontal distance resignationd. Sensitivity B - answer if the ultrasound machine comes in contact with a patients body fluids,what should be done? A. Remove the machine from use for the day B. Use an approved disinfectant solution to clean itc. Call the manufacturer to see what they would do B - answer which parameter is most related to cavitation tissue?A. Energy B. Pressure c. Duty factor D. Pulse repetition frequency B - answer which interface will cause the maximum reflection of the incident soundbeam? A. Fat/muscle
A - answer what is the function of a lens on a transducer?A. Focus the beam B. Increase the bandwidth c. Shorten the pulse lengthd. Provide damping D - answer what would improve axial resolution?A. Increase the pulse repetition frequency B. Reduce the receiver gain c. Change the gray scale map D. Increase the transducer frequency D - answer what is true of the far field?A. Sound beam converges B. Intensity is highest C. Lateral resolution is best d. Sound beam diverges A - answer what improves lateral resolution?A. Decreasing the beam width B. Increasing the pulse repetition frequencyc. Decreasing transmitted frequency D. Decreasing the width of the field of view B - answer which statement is true for a linear phased array transducer?A. Line density increases with depth B. Elements are all fired nearly simultaneouslyc. Elements are fired in successive groups D. All scan lines are perpendicular to the face of the transducer
D - answer which artifact is commonly seen within cystic masses due to the finite dimensions of the ultrasound beam? A. Duplication b. Mirror image c. Reverberation D. Slice thickness C - answer which technique utilizes frequency modulation of the transmitted pulse to improve signal to noise ratio? A. Apodization B. Panoramic imaging c. Coded excitation D. Spatial compounding A - answer what is varied to implement apodization?A. Voltage applied to each element B. Time delays between elementsc. Pulse length D. Number of active elements A - answer what will produce no doppler shift at a receiver? A. Source and receiver moving at the same speed and directionb. Source moving toward receiver C. Source moving away from receiverd. Receiver moving toward source D - answer which mode requires two elements mounted side by side?A. Real
seek approval from supervisor C) verbally repeat the request back to the referrer to verify correctnessd) document two forms of id of the patient A - answer which setting of an ultrasound system gives the sonographer the abilityto display both strong and week echoes? A) dynamic range b) resolution c) Range calibration d) sensitivity B - answer what is a benefit of using contrast agents? a) Output power can be increased after contrast administration to improve visualization b) Increased amplitude of the returning doppler signals c) Harmonic signals produced by contrast agents are weaker than those produced by tissue d) Frame rate is improved when interrogating contrast with power doppler A - answer a sound wave propagates fastest through which substance?A) bone B) muscle c) fat D) gas C - answer when the focal point in a b-mode image is electronically changed, whichtype of focusing is in use? a) Lens b) Mechanical
c) dynamic D) curved crystal C - answer when a fluid is flowing at a slow and constant rate within a long tubehaving a uniform diameter, what is the nature of the flow? a) Disturbed b) turbulent c) laminar d) pulsatile C - answer what causes range ambiguity artifacts?A) receiver overload b) Pulser overload c) prf too high d) prf too low C - answer what is the round trip time in soft tissue for an echo from a reflector at adepth of 1 cm? a) 1.54 usec b) 6.5 usec c)13 usec d) 26 usec B - answer which variable decreases when the number of acoustic lines per frame isincreased without changing its maximum depth? a) Spl b) Frame rate c) prf
frequency of 16 khz? a) 32 khz b) 10 khz c) 8 khz d) 5 khz B - answer what caused the color pattern demonstrated in the artery indicated by thearrow in this image? a) Superimposed venous flowb) aliasing c) Flow reversal d) Color side lobe artifact D - answer which adjustment should be made to avoid the aliasing displayed on thisspectral doppler image seen on spectral analysis? A) reposition sample volume so it is deeper.B) decrease acoustic power c) Change the doppler angle from 60 to 45 degreesd) decrease the transducer freq C - answer if red blood cells are approaching a 5 mhz doppler transducer at a speedof 75 cm/s, what is the approximate received ultrasound frequency? a) 4,500 khz b) 4,995 khz c) 5,005 khz d) 5,500 khz C - answer which condition must be present for refraction to occur?A) presence of a strong specular reflector
B) presence of several small reflectorsc) difference in tissue prop speeds D) a change in the angle of reflection B - answer the thermal index (ti) is most affected by which type of interaction between sound and tissue? A) reflection b) absorption c) scattering d) refraction C - answer in an unfocused transducer, what is the region between the transducerface and the point where the beam diverges? A) side lobe b) focal zone c) near field d) far field C - answer what is this artifact?A. Shadowing B. Side lobe C. Reverberation d. Mirror image D - answer how do you fix thisa. Decrease the color scale B. Decrease the color packet sizec. Increase the color packet size d. Increase the color scale
