ARDMS SPI Verified Multiple Choice and Conceptual
Actual Emended Exam Questions With Reviewed
100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. Red blood cells act as what type of reflector in ultrasound imaging?
a) Specular
b) Non specular
c) Acoustic lens
d) Annular
2. Which is essential for Doppler shift detection?
a) Smooth reflecting surface
b) Moving scatterers (RBCs)
c) Attenuation
d) Refraction
3. Spatial pulse length is determined by:
a) Damping material
b) Wavelength & # of cycles in pulse
c) Transducer diameter
d) Propagation speed
4. Axial resolution is improved by:
a) Longer SPL
b) Shorter SPL
c) Larger beam diameter
d) Increased gain
5. Lateral resolution is primarily affected by:
a) Beam width
b) Wavelength
c) Pulse duration
d) Frame rate
,6. The Fraunhofer zone refers to the:
a) Near field
b) Far field
c) Dead zone
d) Focal length
7. Reverberation artifacts are caused by:
a) Multiple reflections between strong interfaces
b) Refraction
c) Attenuation
d) Doppler aliasing
8. Grating lobes are associated with:
a) Mechanical probes
b) Array transducers
c) Doppler sampling
d) Harmonic imaging
9. Which transducer uses mechanical beam steering?
a) Linear phased array
b) Annular array
c) Curved array
d) Matrix array
10. Beam steering in phased arrays is achieved by:
a) Rotating crystals
b) Electronic phasing
c) Acoustic mirrors
d) Mechanical lenses
11. Which group of wires in the AIUM 100 mm test object evaluates axial resolution?
a) A
b) B
c) C
d) D
12. Depth calibration is assessed with which wire groups in the AIUM test object?
a) A
b) B
, c) C & E
d) D
13. The dead zone is measured using:
a) Group A
b) Group B
c) Group C
d) Group D
14. A 3.5 MHz pulse traveling 2 cm in soft tissue undergoes how much attenuation?
a) 1.75 dB
b) 3.5 dB
c) 7.0 dB
d) 0.35 dB
15. Attenuation coefficient in soft tissue is approximately:
a) 1 dB/cm/MHz
b) 2 dB/cm/MHz
c) 0.5 dB/cm
d) 3 dB/cm
Example of nonspecular reflector - ANSWER red blood cells
What happens to spatial pulse length when frequency increases? - ANSWER decreases
Axial resolution is dependent on? - ANSWER wavelength
Lateral resolution is dependent on? - ANSWER beam diameter
Where does the beam of an unfocused transducer diverge? - ANSWER Fraunhofer zone
Reverberation artifacts are a result of - ANSWER two or more strong reflecting surfaces
, True/False: Grating lobes are essential for the proper operation of a linear phased array. -
ANSWER False
True/False: Electronically steered scanners always produce higher resolution images than do
mechanically steered scanners. - ANSWER False
True/False: An annular array scanner uses mechanical beam steering. - ANSWER True
True/False: A linear sequenced array cannot be dynamically focused. - ANSWER False
registration or B-mode alignment - ANSWER Which AIUM test object function utilizes all the
groups of wires in the AIUM 100 mm test object?
axial resolution - ANSWER Which AIUM test object function utilizes the A group of wires in
the AIUM 100 mm test object?
lateral resolution - ANSWER Which AIUM test object function utilizes the B group of wires
in the AIUM 100 mm test object?
dead zone - ANSWER Which AIUM test object function utilizes the D group of wires in the
AIUM 100 mm test object?
depth calibration - ANSWER Which AIUM test object function utilizes the C or E groups of
wires in the AIUM 100 mm test object?
What happens to axial resolution when spatial pulse length is decreased? - ANSWER
improves
Actual Emended Exam Questions With Reviewed
100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. Red blood cells act as what type of reflector in ultrasound imaging?
a) Specular
b) Non specular
c) Acoustic lens
d) Annular
2. Which is essential for Doppler shift detection?
a) Smooth reflecting surface
b) Moving scatterers (RBCs)
c) Attenuation
d) Refraction
3. Spatial pulse length is determined by:
a) Damping material
b) Wavelength & # of cycles in pulse
c) Transducer diameter
d) Propagation speed
4. Axial resolution is improved by:
a) Longer SPL
b) Shorter SPL
c) Larger beam diameter
d) Increased gain
5. Lateral resolution is primarily affected by:
a) Beam width
b) Wavelength
c) Pulse duration
d) Frame rate
,6. The Fraunhofer zone refers to the:
a) Near field
b) Far field
c) Dead zone
d) Focal length
7. Reverberation artifacts are caused by:
a) Multiple reflections between strong interfaces
b) Refraction
c) Attenuation
d) Doppler aliasing
8. Grating lobes are associated with:
a) Mechanical probes
b) Array transducers
c) Doppler sampling
d) Harmonic imaging
9. Which transducer uses mechanical beam steering?
a) Linear phased array
b) Annular array
c) Curved array
d) Matrix array
10. Beam steering in phased arrays is achieved by:
a) Rotating crystals
b) Electronic phasing
c) Acoustic mirrors
d) Mechanical lenses
11. Which group of wires in the AIUM 100 mm test object evaluates axial resolution?
a) A
b) B
c) C
d) D
12. Depth calibration is assessed with which wire groups in the AIUM test object?
a) A
b) B
, c) C & E
d) D
13. The dead zone is measured using:
a) Group A
b) Group B
c) Group C
d) Group D
14. A 3.5 MHz pulse traveling 2 cm in soft tissue undergoes how much attenuation?
a) 1.75 dB
b) 3.5 dB
c) 7.0 dB
d) 0.35 dB
15. Attenuation coefficient in soft tissue is approximately:
a) 1 dB/cm/MHz
b) 2 dB/cm/MHz
c) 0.5 dB/cm
d) 3 dB/cm
Example of nonspecular reflector - ANSWER red blood cells
What happens to spatial pulse length when frequency increases? - ANSWER decreases
Axial resolution is dependent on? - ANSWER wavelength
Lateral resolution is dependent on? - ANSWER beam diameter
Where does the beam of an unfocused transducer diverge? - ANSWER Fraunhofer zone
Reverberation artifacts are a result of - ANSWER two or more strong reflecting surfaces
, True/False: Grating lobes are essential for the proper operation of a linear phased array. -
ANSWER False
True/False: Electronically steered scanners always produce higher resolution images than do
mechanically steered scanners. - ANSWER False
True/False: An annular array scanner uses mechanical beam steering. - ANSWER True
True/False: A linear sequenced array cannot be dynamically focused. - ANSWER False
registration or B-mode alignment - ANSWER Which AIUM test object function utilizes all the
groups of wires in the AIUM 100 mm test object?
axial resolution - ANSWER Which AIUM test object function utilizes the A group of wires in
the AIUM 100 mm test object?
lateral resolution - ANSWER Which AIUM test object function utilizes the B group of wires
in the AIUM 100 mm test object?
dead zone - ANSWER Which AIUM test object function utilizes the D group of wires in the
AIUM 100 mm test object?
depth calibration - ANSWER Which AIUM test object function utilizes the C or E groups of
wires in the AIUM 100 mm test object?
What happens to axial resolution when spatial pulse length is decreased? - ANSWER
improves
