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SPI REVIEW EXAM LATEST 2024 WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU NEED) LATEST EDITION 2024$21.99
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SPI REVIEW EXAM LATEST 2024 WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU NEED) LATEST EDITION 2024
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Course
SPI
Institution
SPI
SPI REVIEW EXAM LATEST 2024 WITH ACTUAL QUESTIONS
AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+
100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU NEED)
LATEST EDITION 2024
SPI REVIEW EXAM LATEST 2024 WITH ACTUAL QUESTIONS
AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+
100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU NEED)
LATEST EDITION 2024
Which of the following do the source and the medium determine?
a. duty factor b. frequency c. propagation speed d. axial resolution -
<<ANSWER>>-d. axial resolution
Axial resolution is affected by all of the following EXCEPT:
a. frequency b. focusing c. spatial pulse length d. wavelength -
<<ANSWER>>-b. focusing
Damping in a transducer
a. reduces the number of cycles in a pulse and increases the quality
factor b. increases the number of cycles in a pulse and increases
penetration c. causes poor axial and lateral resolution d. reduces the
duty factor and increases the range of transmitted frequencies -
,<<ANSWER>>-D. Reduces the duty factor and increases the range of
transmitted frequencies
Far zone beam divergence can be reduced on a single-element
transducer by using
a. a transducer with a smaller element diameter b. a higher frequency
transducer c. a lower frequency transducer or a smaller element
diameter d. adjustable focusing - <<ANSWER>>-b. a higher frequency
transducer
The area between the face of an unfocused single-element transducer
and the point where the beam starts to
diverge is the
a. near zone b. refraction zone c. focal plane d. Fraunhofer zone -
<<ANSWER>>-a. near zone
Assuming a fixed frequency, what happens if the diameter of an
unfocused transducer is increased?
a. the far zone divergence increases b. the penetration decreases c. the
length of the near zone increases d. the length of the near zone
decreases - <<ANSWER>>-c. the length of the near zone increases
Which of the following does NOT affect lateral resolution?
a. focusing b. element diameter c. frequency d. bandwidth -
<<ANSWER>>-d. bandwidth
,Higher frequency transducers provide
a. improved lateral resolution b. smaller Doppler shifts c. improved axial
resolution and reduced attenuation d. increased penetration -
<<ANSWER>>-a. improved lateral resolution
Ultrasound waves that are traveling through a medium consist of
a. electromagnetic and radio frequencies b. compressions and
refractions c. electromagnetic and ionizing frequencies d. compressions
and rarefactions - <<ANSWER>>-d. compressions and rarefactions
What is the difference between audible sound and ultrasound?
a. Audible sound waves can travel through a vacuum b. Audible sound
has a higher frequency c. Ultrasound has a higher frequency d.
Ultrasound waves are ionizing - <<ANSWER>>-c. Ultrasound has a
higher frequency
A decrease in the thickness of a piezoelectric element will result in
a. a greater pulse duration b. an increase in the propagation speed c. a
decrease in the quality factor if the bandwidth decreases d. an increase
in the frequency of the transducer - <<ANSWER>>-d. an increase in the
frequency of the transducer
The resonant frequency of a pulsed-wave ultrasound transducer is
dependent on
, a. damping b. the backing material c. the thickness of the piezoelectric
element and the speed of sound through the piezoelectric element d.
the amplitude of the voltage applied to the piezoelectric element -
<<ANSWER>>-c. the thickness of the piezoelectric element and the
speed of sound through the piezoelectric element
The image is brighter at the level of the focal zone. Which of the
following controls is best to correct this?
a. Overall gain b. TGC c. Acoustic power d. PRF - <<ANSWER>>-b. TGC
If the frequency is doubled...
a. the duty factor will increase b. the period will double c. the
wavelength will double d. the wavelength will be one-half -
<<ANSWER>>-d. the wavelength will be one-half
The typical range of pulse repetition frequencies in a pulse-echo
ultrasound system is
a. 4,000 Hz to 15,000 Hz b. 20 MHz to 200 MHz c. 20,000 Hz to 200,000
Hz d. 1,000 Hz to 2,000 Hz - <<ANSWER>>-a. 4,000 Hz to 15,000 Hz
If the number of cycles in a pulse is reduced,
a. the pulse repetition frequency is automatically reduced b. the spatial
pulse length increases c. the pulse duration is reduced which results in a
lower duty factor d. the bandwidth is decreased and the quality factor is
increased - <<ANSWER>>-c. the pulse duration is reduced which results
in a lower duty factor
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