Question 1

Increasing the frame rate improves ________.

Accepted Answer

A)   axial resolution
B)   detail resolution
C)   penetration depth
D)   temporal resolutionE) B) and C)
F) A) and B) D

Question 2

Which of the following is not an advantage of harmonic imaging?

Accepted Answer

A)   Wide primary beam.
B)   Increased lateral resolution.
C)   Elimination of grating lobe artifacts.
D)   Reduction in superficial reverberation artifacts.E) B) and C)
F) A) and D)

Question 3

The ________ is where the action originates.

Accepted Answer

A)   signal processor
B)   code excitation
C)   beam former
D)   transmit/receive (T/R)  switchE) A) and B)
F) A) and C)

Question 4

Volume imaging is accomplished by ________.

Accepted Answer

A)   acquiring many parallel two-dimensional scans
B)   scanning from different angles
C)   spatial compounding
D)   expanding beyond the normal limits of the transducerE) A) and B)
F) B) and D)

Question 5

To avoid echo misplacement ________.

Accepted Answer

A)   penetration depth is increased
B)   multiple focal zones should be utilized
C)   a matching layer is added to the transducer element
D)   all echoes must be received before another pulse is emittedE) A) and B)
F) A) and C)

Question 6

________ determines how echo data stored in memory appear on the display.

Accepted Answer

A)   Preprocessing
B)   Postprocessing
C)   Dynamic range
D)   ColorE) B) and C)
F) A) and B)

Question 7

Which resolution depends on penetration depth,lines per frame,and the number of focuses?

Accepted Answer

A)   Axial.
B)   Temporal.
C)   Contrast.
D)   Detail.E) All of the above
F) A) and B)

Question 8

Which of the following reformats data into image form for processing,storage and display?

Accepted Answer

A)   Summer.
B)   Beam former.
C)   Digitizer.
D)   Signal processor.E) C) and D)
F) A) and B)

Question 9

Which three-dimensional display appears similar to a radiograph?

Accepted Answer

A)   Pulse inversion.
B)   Surface rendering.
C)   Transparent views.
D)   Panoramic images.E) All of the above
F) A) and B)

Question 10

The averaging of sequential frames together to provide a smoother image appearance is called ________.

Accepted Answer

A)   persistence
B)   multi-focus
C)   pixel interpolation
D)   spatial compoundingE) A) and D)
F) A) and C)

Question 11

If the operating frequency is reduced,________.

Accepted Answer

A)   frame rate increases
B)   axial resolution improves
C)   pulse repetition frequency increases
D)   maximum penetration depth increasesE) A) and C)
F) A) and D) D

Question 12

Filtering of the sound beam is used to eliminate ________.

Accepted Answer

A)   side lobe artifacts
B)   secondary frequencies
C)   the fundamental frequency
D)   frequencies outside of the bandwidthE) A) and D)
F) A) and C)

Question 13

Retention of previous frames while new echo information is added in the same scanning plane is called ________.

Accepted Answer

A)   harmonic imaging
B)   panoramic imaging
C)   pixel interpolation
D)   spatial compoundingE) C) and D)
F) A) and D)

Question 14

The ________ determines the brightness of the echoes on the display.

Accepted Answer

A)   analog-to-digital converter
B)   digitizer
C)   digital-to-analog converter
D)   cathode ray tubeE) None of the above
F) C) and D)

Question 15

Increasing frame rate improves

Accepted Answer

A)   axial resolution
B)   lateral resolution
C)   temporal resolution
D)   contrast resolutionE) C) and D)
F) None of the above

Question 16

Golay codes ________.

Accepted Answer

A)   are coding schemes using "gaps" or missing pulses
B)   use pairs of transmitted pulses with the second being a bipolar sequence
C)   are coding schemes that stack up the individual pulses
D)   reduce speckle, which improves contrast resolutionE) A) and B)
F) None of the above

Question 17

Maximum amplifier gain is determined by ________.

Accepted Answer

A)   output
B)   input
C)   noise
D)   manufacturerE) A) and B)
F) C) and D)

Question 18

Which of the following constitutes a reception channel?

Accepted Answer

A)   Elements, pulser, signal processor, and delay path.
B)   Beam former, pulser, amplifier, and scan converter.
C)   Elements, amplifier, digitizer, and delay path.
D)   Beam former, signal processor, image processor, and display.E) A) and B)
F) B) and C)

Question 19

Which of the following digitally filters,detects,and compresses echo data?

Accepted Answer

A)   Beam former.
B)   Summer.
C)   Signal processor.
D)   Digitizer.E) A) and C)
F) C) and D) C

Question 20

Holding and displaying one frame out of the sequence is known as ________.

Accepted Answer

A)   cine loop
B)   freeze frame
C)   the frame rate
D)   a scan lineE) A) and B)
F) A) and C)

Exam 4: Instruments

Increasing the frame rate improves ________.

Correct AnswerverifiedD

Which of the following is not an advantage of harmonic imaging?

Correct AnswerverifiedShow Answer

The ________ is where the action originates.

Correct AnswerverifiedShow Answer

Volume imaging is accomplished by ________.

Correct AnswerverifiedShow Answer

To avoid echo misplacement ________.

Correct AnswerverifiedShow Answer

________ determines how echo data stored in memory appear on the display.

Correct AnswerverifiedShow Answer

Which resolution depends on penetration depth,lines per frame,and the number of focuses?

Correct AnswerverifiedShow Answer

Which of the following reformats data into image form for processing,storage and display?

Correct AnswerverifiedShow Answer

Which three-dimensional display appears similar to a radiograph?

Correct AnswerverifiedShow Answer

The averaging of sequential frames together to provide a smoother image appearance is called ________.

Correct AnswerverifiedShow Answer

If the operating frequency is reduced,________.

Correct AnswerverifiedD

Filtering of the sound beam is used to eliminate ________.

Correct AnswerverifiedShow Answer

Retention of previous frames while new echo information is added in the same scanning plane is called ________.

Correct AnswerverifiedShow Answer

The ________ determines the brightness of the echoes on the display.

Correct AnswerverifiedShow Answer

Increasing frame rate improves

Correct AnswerverifiedShow Answer

Golay codes ________.

Correct AnswerverifiedShow Answer

Maximum amplifier gain is determined by ________.

Correct AnswerverifiedShow Answer

Which of the following constitutes a reception channel?

Correct AnswerverifiedShow Answer

Which of the following digitally filters,detects,and compresses echo data?

Correct AnswerverifiedC

Holding and displaying one frame out of the sequence is known as ________.

Correct AnswerverifiedShow Answer

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D

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C

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