Edelman SPI Comprehensive Exam 2/Edelman
SPI Exam Predictor TEST BANK /Edelman
SPI Practice Exam With Complete Questions
And Correct Answers with Deatailed
Rationales Graded A+
What determines the frequency of a sound beam from a pulsed transducer?
A. Voltage applied to the PZT
B. PZT thickness
C. Frequency of the system
D. PRF of the pulser
B. PZT thickness
While propagating, a sound wave is refracted. Finally, it returns to the transducer. The system
processes the sound wave as if it has?
A. Refracted and returned
B. Traveled in a straight line, reflected and returned
C. Traveled in a straight line, attenuated, reflected and returned
B. Traveled in a straight line, reflected and returned
What measures the output of a transducer?
A. Receiver
B. Display
C. Hydrometer
D. Hydrophone
D. Hydrophone
The impedance of tissue is 3 x 10^5 rayls and for the PZT crystal is 6 x 10^6 rayls. What is the
best impedance for the matching layer?
A. 36 x 10^6
B. 3,600
C. 10,000
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D. 9.5 x 10^5
E. 9 x 10^4
D. 9.5 x 10^5
Put in increasing order of propagation speed:
A. Air, bone, water
B. Bone, water, air
C. Air, water, bone
D. Water, air, bone
E. Bone, air, water
C. Air, water, bone
Which type of artifact appears most commonly with highly reflective objects?
A. Reverberations
B. Mirroring
C. Shadowing
D. Enhancement
E. Defocusing
C. Shadowing
What can pulsed Doppler measure that continuous wave cannot?
A. Duration
B. Speed
C. Velocity
D. Location
E. Frequency
D. Location
What is the fraction of the time that a transducer is transmitting?
A. Duty factor
B. Pulse duration
C. Period
D. PRF spatial duration
A. Duty factor
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Which of the following clinical modalities has the lowest output power intensity?
A. Pulsed Doppler
B. Continuous wave Doppler
C. Power Doppler
D. Duplex scanning
E. Gray scale imaging
E. Gray scale imaging
What is the location of the minimum cross sectional area of the US beam called?
A. Focus
B. Fraunhofer zone
C. Far zone
D. Near zone
A. Focus
The dB is defined as the ___ of two intensities.
A. Sum
B. Difference
C. Product
D. Ratio
D. Ratio
An ultrasound system is set at 0 dB and is transmitting at full intensity. What is the output power
when the system is transmitting at 50% of full intensity?
A. -3dB
B. -50dB
C. 10dB
D. 3dB
E. -10dB
A. -3dB
An ultrasound system is set at 0 dB and is transmitting at full intensity. What is the output power
when the system is transmitting at 10% of full intensity?
A. -3dB
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, Edelman SPI Comprehensive Exam
B. -50dB
C. 10dB
D. 3dB
E. -10dB
E. -10dB
The Doppler shift is the _____ of two frequencies?
A. Sum
B. Difference
C. Product
D. Ratio
B. Difference
What is the propagation speed determined by?
A. Wavelength
B. Intensity and density
C. Amplitude
D. Density and elasticity
E. Density and amplitude
D. Density and electricity
If 300,000 cycles occur in a second, what is the wave's frequency?
A. 3MHz
B. 30kHz
C. 300MHz
D. 3kHz
E. 0.3MHz
E. 0.3MHz
What would be the brightest B-mode spot, when scanning the following?
C
What may be the unit of amplitude?
A. Cm
B. Hz
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