ARDMS SPI EXAM STUDY QUESTIONS
WITH VEFIRIED ANSWERS \ BRAND
NEW VERSION
1. 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 - ANSWER B.adjust the baseline
2. 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 - ANSWER A.by observing spaces between reflectors perpendicular to
the beam
3. Attenuation Coefficient - ANSWER The rate at which sound is attenuated
per unit depth
4. Axial Resolution - ANSWER The ability to accurately identify reflectors
that are arranged parallel to the ultrasound beam
,5. Backscatter - ANSWER Scattered sound waves that make their way back to
the transducer and produce an image on the display
6. Beam Uniformity Ratio - ANSWER The ratio of the center intensity to the
average spatial intensity; also referred to as the SP/SA factor or beam
uniformity coefficient
7. Capacitive Micromachined Ultrasound Transducers - ANSWER
Technology used to create comparable transducer technology to
piezoelectric materials
8. Compression - ANSWER An area in the sound wave of high pressure and
density
9. Continuous Wave - ANSWER Sound that is continuously transmitted
10.Damping - ANSWER The process of reducing the number of cycles of each
pulse in order to improve axial resolution
11.Decibels - ANSWER A unit that establishes a relationship or comparison
between two values of power, intensity, or amplitude
12.Density - ANSWER Mass per unit volume
13.Inversely Related - ANSWER Relationship that implies that if one variable
decreases, the other increases or if one variable increases, the other
decreases; also referred to as inversely proportional
,14.Longitudinal Wave - ANSWER Waves in which the molecules of the
medium vibrate back and forth in the same direction that the waves are
traveling.
15.Medium - ANSWER Any form of matter; Solid, Liquid, or Gas
16.Non-specular Reflectors - ANSWER Reflectors that are smaller than the
wavelength of the incident beam
17.Which gain will increase the risk of bioeffects? - ANSWER Transmit
18.What is considered the memory of an ultrasound instrument? - ANSWER
Digital Scan Converter
19.Spectral Broadening Suggests - ANSWER Turbulent Flow
20.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 - ANSWER C.aperture that
increases with increasing focal length
21.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 - ANSWER D.provides depth specificity
22.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 - ANSWER B.difference between the transmitted ultrasound
frequency and the received ultrasound frequency
23.Which doppler angle to flow results in the greatest absolute doppler shift?
A.0 degrees
B.15 degrees
C.45 degrees
D.60 degrees - ANSWER A.0 degrees
24.To which acoustic variable is penetration depth inversely related?
25.A.frequency
B.wavelength
C.period
D.propagation speed - ANSWER A.frequency
26.With harmonic imaging, how does echo frequency relate to transmitted
frequency?
WITH VEFIRIED ANSWERS \ BRAND
NEW VERSION
1. 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 - ANSWER B.adjust the baseline
2. 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 - ANSWER A.by observing spaces between reflectors perpendicular to
the beam
3. Attenuation Coefficient - ANSWER The rate at which sound is attenuated
per unit depth
4. Axial Resolution - ANSWER The ability to accurately identify reflectors
that are arranged parallel to the ultrasound beam
,5. Backscatter - ANSWER Scattered sound waves that make their way back to
the transducer and produce an image on the display
6. Beam Uniformity Ratio - ANSWER The ratio of the center intensity to the
average spatial intensity; also referred to as the SP/SA factor or beam
uniformity coefficient
7. Capacitive Micromachined Ultrasound Transducers - ANSWER
Technology used to create comparable transducer technology to
piezoelectric materials
8. Compression - ANSWER An area in the sound wave of high pressure and
density
9. Continuous Wave - ANSWER Sound that is continuously transmitted
10.Damping - ANSWER The process of reducing the number of cycles of each
pulse in order to improve axial resolution
11.Decibels - ANSWER A unit that establishes a relationship or comparison
between two values of power, intensity, or amplitude
12.Density - ANSWER Mass per unit volume
13.Inversely Related - ANSWER Relationship that implies that if one variable
decreases, the other increases or if one variable increases, the other
decreases; also referred to as inversely proportional
,14.Longitudinal Wave - ANSWER Waves in which the molecules of the
medium vibrate back and forth in the same direction that the waves are
traveling.
15.Medium - ANSWER Any form of matter; Solid, Liquid, or Gas
16.Non-specular Reflectors - ANSWER Reflectors that are smaller than the
wavelength of the incident beam
17.Which gain will increase the risk of bioeffects? - ANSWER Transmit
18.What is considered the memory of an ultrasound instrument? - ANSWER
Digital Scan Converter
19.Spectral Broadening Suggests - ANSWER Turbulent Flow
20.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 - ANSWER C.aperture that
increases with increasing focal length
21.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 - ANSWER D.provides depth specificity
22.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 - ANSWER B.difference between the transmitted ultrasound
frequency and the received ultrasound frequency
23.Which doppler angle to flow results in the greatest absolute doppler shift?
A.0 degrees
B.15 degrees
C.45 degrees
D.60 degrees - ANSWER A.0 degrees
24.To which acoustic variable is penetration depth inversely related?
25.A.frequency
B.wavelength
C.period
D.propagation speed - ANSWER A.frequency
26.With harmonic imaging, how does echo frequency relate to transmitted
frequency?
