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SPI Click to Learn > SPI Mock Exam 3 > Flashcards

SPI Mock Exam 3 Flashcards

1
Q

Which of the following will improve lateral resolution at all depths on the image

A. dynamic transmit focusing
B. dynamic receive focusing
C. use >3 focal zones
D. decrease probe frequency

A

B

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2
Q

The pulser sends the voltage spike to the

A. digital scan converter
B. transducer
C. beam former
D. analog scan converter

A

B

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3
Q

The tissue phantom is scanned from the top. There are 6 pins separated by different millimeter intervals from each other from the top to bottom in the phantom. If you measure the minimum distance visible between the pins, what are you testing on you ultrasound system

A. slice thickness resolution
B. contrast resolution
C. axial resolution
D. lateral resolution

A

C

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4
Q

Which of the following console controls will have NO effect on the dynamic range

A. compression
B. output power
C. suppression
D. rejection

A

B

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5
Q

Which of the following is true regarding annular arrays and linear arrays

A. annular arrays can be electronically steered, linear arrays must be mechanically steered
B. annular arrays and linear arrays can be electronically steered
C. annular arrays have multiple elements, linear arrays have a single element
D. annular arrays must be mechanically steered, linear arrays use electronic steering

A

D

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6
Q

Which of the following system adjustments can be used to help demonstrate the presence of posterior shadowing seen with gallstones

A. increase compression setting
B. decrease dynamic range
C. decrease transducer frequency
D. decrease monitor contrast

A

B

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7
Q

When using a tissue phantom to evaluate range accuracy, what unit will be used to report the measurement

A. micrometer
B. decibel
C. millisecond
D. centimeter

A

D

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8
Q

Activating harmonic imaging will result in

A. increased beam diameter
B. degraded lateral resolution
C. improved contrast resolution
D. increased production of grating lobes

A

C

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9
Q

What type of transducer array has the fewest number of elements

A. annular array
B. linear phased array
C. curvilinear sequential array
D. mechanical transducer

A

A

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10
Q

Which of the following sound wave parameters varies as the prop speed changes in different media

A. PRF
B. frequency
C. period
D. wavelength

A

D

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11
Q

Which of the following will reduce the amount of color doppler information displayed on the image

A. increased packet size
B. increased probe frequency
C. increased sample size
D. increased sensitivity

A

C

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12
Q

Which of the following will not affect the signal to noise ratio on a 2D image

A. harmonic imaging
B. frequency compounding
C. spatial compounding
D. temporal compounding

A

D

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13
Q

All of the following correctly describe a normal doppler waveform of an artery from the lower extremity, except

A. the triphasic waveform has two components of normal retrograde flow during the cardiac cycle
B. the triphasic waveform has a normal retrograde flow component during the cardiac cycle
C. there will be a high resistance peaked waveform with a small amount of flow reversal in diastole
D. the triphasic waveform has two components of antegrade flow during the cardiac cycle

A

A

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14
Q

As a transducer frequency increases, the quality factor _______

A. decreases
B. does not change
C. increases
D. changes only is a different PE element is used

A

C

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15
Q

What US system function converts the returned waves into all positive voltages (compressions)

A. frequency compounding
B. rectification
C. rejection
D. coded excitation

A

B

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16
Q

Which type of phantom is necessary to evaluate temporal resolution

A. tissue phantom
B. hydrophone
C. AIUM test object
D. fluid filled doppler phantom

A

D

17
Q

Which of the following causes range ambiguity artifact

A. refraction
B. element damage
C. high PRF
D. electrical interference

A

C

18
Q

Dynamic focusing refers to

A. a combination of electronic and mechanical focusing
B. a combination of frequency compounding and receive focusing
C. the type of focusing used in a mechanical array
D. using the time of flight of pulses to improve resolution

A

D

19
Q

Which of the following will increase the risk of aliasing

A. intercept angle of 90 degrees
B. increase transmit frequency
C. decreasing the image depth
D. low velocity blood flow

A

B

20
Q

Some US transducer arrays allow you to the reduce the thickness of the beam as an additional type of focusing. What effect will this change have on the image

A. improved contrast resolution
B. improved elevational resolution
C. decreased temporal resolution
D. decreased beam attenuation

A

B

SPI Click to Learn (12 decks)

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