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2024 SPI PRACTICE TEST EXAM WITH CORRECT ANSWERS
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2024 SPI PRACTICE TEST EXAM WITH CORRECT ANSWERS
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2024 SPI PRACTICE TEST EXAMWITH CORRECT ANSWERS
What testing device is used to measure acoustic output (intensity) level?
a. Tissue phantom
b. AIUM test phantom
c. Doppler flow phantom
d. Hydrophone - CORRECT-ANSWERSd.
Axial resolution is affected by all of the following EXCEPT
a. frequency
b. damping
c. spatial pulse length
d. focusing - CORRECT-ANSWERSd.
Which of the following do the source and the medium determine?
a. duty factor
b. frequency
c. propagation speed
d. axial resolution - CORRECT-ANSWERSd.
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 - CORRECT-ANSWERSd.
Which of the following will increase the acoustic exposure to the patient?
a. Increased receiver amplification
b. Increase time gain compensation
c. Pulse repetition frequency
d. Increased output gain - CORRECT-ANSWERSd.
What does the mechanical index indicate on an ultrasound system?
a. Minutes of exposure time
,b. The likelihood of cavitation during an US exam
c. The maximum temperature increase in tissue
d. The minimum temperature increase in tissue - CORRECT-ANSWERSb.
IF you wish to practice the ALARA principle, which of the following techniques
should you employ?
a. Always use the lowest receiver gain that allows for tissue visualization
b. Use the lowest transmit power that allows adequate tissue visualization
c. Use the highest exposure time
d. None of the above - CORRECT-ANSWERSb.
Which operator control adjusts the intensity of the transmitted pulse?
a. Receiver gain
b. Depth of scanning
c. Power
d. Time gain compensation (TGC) - CORRECT-ANSWERSc.
At what point do the amplitudes get assigned gray scale numbers so they
can be placed into memory?
a. Pre-processing of the signal
b. Post-processing of the signal
c. In the computer memory
d. In the receiver - CORRECT-ANSWERSa.
ALARA stands for
a. As low as reasonably achievable
b. As long as reasonably acceptable
c. As little as reasonably allowable
d. As long as reasonably achieveable - CORRECT-ANSWERSa.
The "useful" artifact that one might see behind a weakly attenuating
structure:
a. Shadowing
b. Enhancement
c. Reflection
d. Refraction - CORRECT-ANSWERSb.
In the waveform to the right, the end-diastolic flow velocity cannot be
measured. What control adjustment should be performed to obtain this
measurement?
, a. Increase the PRF
b. Decrease the angle of incidence
c. Decrease the wall filter
d. The Doppler gain - CORRECT-ANSWERSc.
When you adjust the output power control, you affect the following system
component:
a. Pulser
b. Memory
c. Converter
d. Receiver - CORRECT-ANSWERSa.
Low-level system noise is reduced in the US system by this method:
a. Demodulation
b. Compensation
c. Amplification
d. Rejection - CORRECT-ANSWERSd.
What receiver function is responsible for decreasing the difference between
the largest and smallest received amplitude?
a. Amplification
b. Compensation
c. Compression
d. Rejection - CORRECT-ANSWERSc.
The Doppler effect for a reflector moving toward the sound source causes
the reflected sound to have:
a. Increased frequency
b. Increased impedance
c. Increased intensity
d. Increased amplitude - CORRECT-ANSWERSa.
In ultrasound systems, the range equation is used to determine which of the
following?
a. Reflector amplitude
b. Reflector frequency
c. Reflector size
d. Reflector depth - CORRECT-ANSWERSd.
Which is NOT an assumption of ultrasonic imaging that determines how
detected echoes are displayed in the image?
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