ARDMS SPI Practice Test A updated 2026
• When using a 5MHZ transducer, in which tissue is the ultrasound wavelength
shortest?
A.fat
B.blood
C.bone
D.muscle -✓✓A.fat
• What affects the beam width in the near field?
A.Pulse repetition frequency
B.Pulse duration
C.Frame rate
D.Transducer aperture -✓✓D.Transducer aperture
• Which variable caused the color change from blue to red of the vessel in this
image?
A.change in vessel direction
B.color scale set to low
C.turbulent flow
D.severe stenosis -✓✓A.change in vessel direction
• Which imaging mode requires a broadband transducer?A.continuous wave
doppler
B.Pulsed wave doppler
C.color flow imaging
D.harmonic imaging -✓✓B.Pulsed wave doppler
• Which factor limits image frame rate?
A.transducer operating frequency
B.Sample volume size
C.Speed of sound in tissue
D.Spatial pulse length -✓✓C.Speed of sound in tissue
• Which imaging modality can provide the most accurate measurement of tumor
volume?
A.color doppler
, B.B-mode
C.A-mode
D.M-mode -✓✓B.B-mode
• Which change would minimize the artifact observed in this image, assuming the
pulse repetition frequency is at its maximum limit?A.adjust the sweep speed
B.adjust the baseline
C.increasing dynamic range
D.increasing the transmitted frequency -✓✓B.adjust the baseline
• How is lateral resolution determined for a pulsed-echo system using a tissue-
mimicking test object?
A.by observing spaces between reflectors perpendicular to the beam
B.by observing 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.by observing spaces between reflectors perpendicular to the beam
• 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 -✓✓C.aperture that increases
with increasing focal length
• 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.provides depth specificity
• 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
• When using a 5MHZ transducer, in which tissue is the ultrasound wavelength
shortest?
A.fat
B.blood
C.bone
D.muscle -✓✓A.fat
• What affects the beam width in the near field?
A.Pulse repetition frequency
B.Pulse duration
C.Frame rate
D.Transducer aperture -✓✓D.Transducer aperture
• Which variable caused the color change from blue to red of the vessel in this
image?
A.change in vessel direction
B.color scale set to low
C.turbulent flow
D.severe stenosis -✓✓A.change in vessel direction
• Which imaging mode requires a broadband transducer?A.continuous wave
doppler
B.Pulsed wave doppler
C.color flow imaging
D.harmonic imaging -✓✓B.Pulsed wave doppler
• Which factor limits image frame rate?
A.transducer operating frequency
B.Sample volume size
C.Speed of sound in tissue
D.Spatial pulse length -✓✓C.Speed of sound in tissue
• Which imaging modality can provide the most accurate measurement of tumor
volume?
A.color doppler
, B.B-mode
C.A-mode
D.M-mode -✓✓B.B-mode
• Which change would minimize the artifact observed in this image, assuming the
pulse repetition frequency is at its maximum limit?A.adjust the sweep speed
B.adjust the baseline
C.increasing dynamic range
D.increasing the transmitted frequency -✓✓B.adjust the baseline
• How is lateral resolution determined for a pulsed-echo system using a tissue-
mimicking test object?
A.by observing spaces between reflectors perpendicular to the beam
B.by observing 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.by observing spaces between reflectors perpendicular to the beam
• 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 -✓✓C.aperture that increases
with increasing focal length
• 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.provides depth specificity
• 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
