Pulsed Echo Instrumentation
9 Questions
| Attempts: 478
Pulser, Receiver, Amplification, Compensation, Compression, Demodulation, Reject
Questions and Answers
- 1.
All of the following are components of an ultrasound system EXCEPT:
- A.
Transducer
- B.
Pulser
- C.
Alternator
- D.
Synchronizer
- E.
Display
- F.
Receiver
Correct Answer
C. Alternator -
- 2.
This type of pulser generates a constant electrical signal in the form of a sine wave:
- A.
Pulsed wave, array
- B.
Continuous wave
- C.
Pulsed wave, single crystal
Correct Answer
B. Continuous waveExplanation
The pulser from a continuous wave ultrasound system creates a continuous electrical signal. the electrical signal's frequency determines the frequency of the continuous wave ultraound.Rate this question:
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- 3.
This type of pulser generates a single electrical spike, which ultimately creates a single sound pulse:
- A.
Pulsed wave, phased array
- B.
Continuous wave
- C.
Pulsed wave, single crystal
Correct Answer
C. Pulsed wave, single crystalExplanation
The pulser of a single crystal pulsed wave system creates a single electrical signal that excites the transducer to create a single acoustic pulse.Rate this question:
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- 4.
This type of pulser generates numerous electrical spikes, which untimately create a single sound pulse:
- A.
Pulsed wave, phased array
- B.
Continuous wave
- C.
Pulsed wave, single crystal
Correct Answer
A. Pulsed wave, phased arrayExplanation
With phased array technology, the pulser emits numerous electrical spikes that exicte numerous crystals in the array. However, only a single acoustic pulse is created from the multiple electronic spikesRate this question:
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- 5.
The acoustic power of a sound beam emitted from a transducer is determined by the _____ of the pulser's signal.
- A.
Pulse repetition frequency
- B.
Frequency
- C.
Voltage
- D.
Rectification
Correct Answer
C. Voltage -
- 6.
All of the following are functions of the receiver EXCEPT:
- A.
Demodulation
- B.
Amplification
- C.
Suppression
- D.
Attenuation
Correct Answer
D. Attenuation -
- 7.
Place these functions in the order in which the ultrasound system performs them: reject, demodulation, amplification, compression, compensation
Correct Answer
amplification, compensation, compression, demodulation, reject - 8.
Ampliciation processes all reflected signals in a similar manner
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
During amplification, all signals are processed identically.Rate this question:
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- 9.
Compensation processes all reflected signals in a similar manner.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Those reflections arising from shallow structures are barely compensated. Those arising from deep structures are substantially compensated.Rate this question:
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Current Version
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Jan 31, 2013Quiz Edited by
ProProfs Editorial Team -
Nov 20, 2011Quiz Created by
Kfdm26
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