Pass SPI Exam to Get ARDMS Certification

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1. What does changing the displayed depth control directly affect?

Pulse repetition frequency

Transducer transmit frequency

Pulse duration

Spatial pulse length

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2. Which adjustment is needed to optimize the waveform below?

Lower baseline

Decrease gain

Increase wall filter

Increase pulse repetition frequency

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3. What produces increased attenuation within soft tissue?

Higher intensity of the ultrasound beam

Higher frequency of the ultrasound beam

Lower intensity of the ultrasound beam

Lower frequency of the ultrasound beam

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4. What does damping in a pulsed-wave transducer affect?

Pulse duration

Pulse repetition frequency

Beam focus

Beam penetration

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5. Which describes the reflected frequency when a reflector is moving toward the sound source?

Increased

Decreased

Unchanged

Attenuated

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6. What is a potential negative consequence of using a high wall filter?

Desired signal may be eliminated

Aliasing could occur

Penetration is reduced

Too much noise may appear on the image

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7. During 3-D volume acquisition, the quality of the images is most dependent upon which factor?

Number of slices acquired

Power output

Rendering method utilized

Speed of post-processing image compression

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8. Which color Doppler setting can be optimized to eliminate low-frequency Doppler shifts without having any effect on higher Doppler frequency shifts?

Gain

Scale

Wall filter

Persistence

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9. In this image, what does the data below the baseline represent?

Blood flow directed towards the transducer

Aliasing and retrograde blood flow

Wall filter setting too high

Mirror image artifact

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10. Which ultrasound adjustment allows for an increased frame rate in color flow Doppler?

Using continuous wave Doppler

Decreasing depth

Using multiple focal zones

Increasing sector scan width

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11. What occurs when the pulse repetition frequency is less than twice the Doppler shift frequency?

Spectral broadening

Range ambiguity

Aliasing

Propagation speed artifact

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12. The ability to resolve two separate reflectors perpendicular to the path of the beam describes which type of resolution?

Axial

Contrast

Lateral

Temporal

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13. Which pulsed-wave Doppler adjustment would be appropriate to correct the aliasing seen in this image?

Increase the spectral Doppler gain.

Decrease the spectral Doppler gain.

Increase the Doppler pulse repetition frequency.

Decrease the Doppler pulse repetition frequency.

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14. Which transducer was most likely used to create this image?

Curvilinear

Endocavity

Phased array

Linear array

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15. In this image, which characteristics of flow are represented by the upper right side of a variance mode color map?

Higher velocity, laminar with a positive Doppler shift

Higher velocity, laminar with a negative Doppler shift

Higher velocity, turbulent with a positive Doppler shift

Higher velocity, turbulent with a negative Doppler shift

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16. Which type of resolution will be improved by decreasing the depth of field?

Lateral

Temporal

Axial

Elevational

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17. What is the term for the change in direction of a sound wave crossing a tissue boundary at an oblique angle?

Reflection

Absorption

Refraction

Attenuation

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18. Which control determines the amount of amplification occurring in the receiver?

Output power

Overall gain

Dynamic range

Persistence

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19. What does this image demonstrate?

Presence of flow

Direction of flow

Color aliasing

Color inversion

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20. Which system control adjusts amplification of signals as a function of depth?

Output power

Time gain compensation

Transmit focus

Reject

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21. Which action would increase the frame rate?

Increasing the sector width

Increasing the number of lines per frame

Decreasing the logarithmic compression

Decreasing the number of focal zones

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22. What is an advantage of power Doppler over color Doppler?

Accurate velocity information

Increased frame rate

Diminished flash artifact

Less angle dependent

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23. If the speed of sound in a medium is less than the average speed of sound in soft tissue, where will the echo be placed on an image?

Too shallow

Not visualized

Laterally

Too deep

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24. Which index is related to the likelihood of cavitation?

Thermal

Temporal

Mechanical

Acoustical output

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25. Which artifact displays reflectors more shallow than their actual position?

Section thickness

Range ambiguity

Mirror image

Ring-down

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26. Which resolution is improved by focusing?

Lateral

Axial

Temporal

Contrast

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27. Which factor does a string phantom evaluate?

Two-dimensional resolution

Intensity values

Flow velocity

Slice thickness

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28. If the pulse repetition frequency is 3 kHz, what is the maximum Doppler shift that can be detected without aliasing?

1.5 kHz

3.0 kHz

6.0 kHz

9.0 kHz

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29. Which component of a contrast agent causes a marked mismatch in impedance between the agent and blood?

Viscous liquid

Serous liquid

Solid

Gas

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30. What are two types of cavitation in tissue?

Heat and transient

Thermal and mechanical

Stable and transient

Thermal and stable

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31. What information does the ultrasound system calculate to display color flow?

Peak Doppler frequency

Mean Doppler frequency

Peak velocity of flow

Minimum velocity of flow

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32. What is the primary reason to use compression?

Increase line density

Reduce the focal region

Improve the axial resolution

Adjust the contrast resolution

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33. What determines the resonant frequency of a pulsed wave transducer?

Element thickness and pulse repetition frequency

Element diameter and speed of sound in element

Element diameter and element thickness

Element thickness and speed of sound in element

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