ARDMS SPI LATEST EXAM B II 2026 COMPLETE
QUESTIONS AND SOLUTIONS GRADED A PLUS
SONOGRAPHY PHYSICS STUDY GUIDE
◉ 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
◉ How much will a 3.5 MHz pulse be attenuated after passing
through 2 cm of soft tissue?
Answer: 3.5 dB
◉ Propagation speed errors result in
Answer: improper axial position
◉ Enhancement is caused by
, Answer: weakly attenuating structures
◉ The Doppler shift frequency is
Answer: directly proportional to the velocity of the reflector
◉ The number of frames per second necessary for a real-time image
to be flicker free is
Answer: more than 15
◉ True/False: The SPTA intensity will always be larger than the
SATA intensity.
Answer: True
◉ The intensity of the ultrasound beam is usually greater at the focal
zone because of
Answer: the smaller beam diameter
◉ If the amplitude is doubled, the intensity is
Answer: quadrupled
◉ The attenuation for soft tissue is
Answer: increased with tissue thickness
QUESTIONS AND SOLUTIONS GRADED A PLUS
SONOGRAPHY PHYSICS STUDY GUIDE
◉ 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
◉ How much will a 3.5 MHz pulse be attenuated after passing
through 2 cm of soft tissue?
Answer: 3.5 dB
◉ Propagation speed errors result in
Answer: improper axial position
◉ Enhancement is caused by
, Answer: weakly attenuating structures
◉ The Doppler shift frequency is
Answer: directly proportional to the velocity of the reflector
◉ The number of frames per second necessary for a real-time image
to be flicker free is
Answer: more than 15
◉ True/False: The SPTA intensity will always be larger than the
SATA intensity.
Answer: True
◉ The intensity of the ultrasound beam is usually greater at the focal
zone because of
Answer: the smaller beam diameter
◉ If the amplitude is doubled, the intensity is
Answer: quadrupled
◉ The attenuation for soft tissue is
Answer: increased with tissue thickness
