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ARDMS SPI Practice Exam B Questions
and Answers Already Passed
Which artifact is illustrated by this image? ✔✔a) Shadowing
b) Side Lobe
c) Reverberation
d) Mirroring
What is increased if the pulse duration is decreased? ✔✔a) Bandwidth
b) Line Density
c) Frame Rate
d) Duty Factor
What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? ✔✔a) Deny performance of the exam until a written request is received
b) Seek approval from supervisor
c) Verbally repeat the request back to the referrer to verify correctness
d) Document two forms of ID of the patient
What is the round trip time in soft tissue for an echo from a reflector at a depth of 1 cm ✔✔a) 1.54 usec
b) 6.5 usec
c)13 usec
d) 26 usec
What adjustment should be made to avoid the aliasing displayed on this spectral 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 degrees
d) Decrease the transducer freq
In an unfocused transducer, what is the region between the transducer face and the point where the beam diverges? ✔✔a) Side lobe
b) Focal Zone
c) Near field
d) Far field
b) Presence of several small reflectors
c) Difference in tissue prop speeds
d) A change in the angle of reflection
In this image, most of the blood flow is in which direction? ✔✔a) Right to left
b) Left to right
c) Bidirectional
d) Indetermiate
If red blood cells are approaching a 5 MHz doppler transducer at a sppeed of 75 cm/s, what is the appropriate received ultrasound frequency? ✔✔a) 4,500 kHz
b) 4,995 kHz
c) 5,005 kHz
d) 5,500 kHz
What is the most common cause of localized vertical nonuniformity in a real-time B-mode image? ✔✔a) Improper TGC
b) Defective transducer elements
c) Faulty preamplifier
d) Malfunctioning scan converter
The thermal index (TI) is most affected by which type of interaction between sound and tissue? ✔✔a) Reflection
b) Absorption
c) Scattering
d) Refraction
Which artifact is commonly seen with cystic masses due to the finite dimensions of the ultrasound beam? ✔✔a) Duplication
b) Mirror Image
c) Reverberation
d) Slice thickness
Which imaging mode requires two elements mounted side by side? ✔✔a) Real-time imaging
b) Duplex imaging
c) PW ultrasound
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
Frequency compounding improves image quality by doing what? ✔✔a) Increasing frame rate
b) Improving dynamic range
c) Reducing speckle
d) Reducing grading lobes
Which scenario will produce no doppler shift to the receiver? ✔✔a) Source and receiver moving at the same speed and direction
b) Source moving toward the receiver
c) Source moving away from receiver
d) Receiver moving toward source
A sound wave propagates fastest through which substance? ✔✔a) Bone
b) Muscle
c) Fat
d) Gas
What determines the center freq of a transducer? ✔✔a) Diameter
b) Shape
c) Matching Layer
d) Thickness
In this image, which target group is used to evaluate dead zone? ✔✔a) A
b) B
c) C
d) D
Which action can improve axial resolution of a displayed image? ✔✔a) Increasing the PRF
b) Reducing the receiver gain
c) Changing the gray-scale ratio
What is the cause of the black region in the center of the vessel seen in this image? ✔✔a) Aliasing
b) Turbulence
c) Incident angle
d) Lack of blood flow at that location
