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SPI Practice Questions

Sonography Principles and Instrumentation

Last Update 4 days ago
Total Questions : 187

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Question # 41

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

Options:

Number of slices acquired

Power output

Rendering method utilized

Speed of post-processing image compression

Discussion 0

Question # 42

Which factor affects lateral resolution in ultrasound?

Options:

Beam width

Depth of penetration

Propagation speed

Wavelength

Discussion 0

Question # 43

What is the primary factor that affects axial resolution?

Options:

Focal zone

Spatial pulse length

Speed of sound

Aperture

Discussion 0

Question # 44

What adjustment is needed to visualize the borders of the anatomical structures in the image below?

Question # 44

Options:

Decrease depth

Increase sector width

Increase dynamic range

Lower focal zone

Discussion 0

Question # 45

What happens to the Doppler shift when the angle is changed from 30 to 60 degrees?

Options:

No significant change

Loss of Doppler signal

Increases

Decreases

Discussion 0

Question # 46

How can the spectral Doppler mirroring seen in this image be eliminated?

Question # 46

Options:

Decrease wall filter.

Decrease Doppler gain.

Increase dynamic range.

Increase pulse repetition frequency (PRF).

Discussion 0

Question # 47

Which parameters determine the propagation speed of sound in a medium?

Options:

Frequency and impedance

Amplitude and impedance

Intensity and density

Elasticity and density

Discussion 0

Question # 48

What does damping in a pulsed-wave transducer affect?

Options:

Pulse duration

Pulse repetition frequency

Beam focus

Beam penetration

Discussion 0

Question # 49

What parameter change reduces spectral Doppler aliasing?

Options:

Increase Doppler angle

Change color scale

Decrease pulse repetition frequency

Utilize m-mode

Discussion 0

Question # 50

What does changing the displayed depth control directly affect?

Options:

Pulse repetition frequency

Transducer transmit frequency

Pulse duration

Spatial pulse length

Discussion 0

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