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SPI Practice Questions

Sonography Principles and Instrumentation

Last Update 4 days ago
Total Questions : 187

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Question # 31

Which adjustment is needed to optimize the waveform below?

Question # 31

Options:

Lower baseline

Decrease gain

Increase wall filter

Increase pulse repetition frequency

Discussion 0

Question # 32

What is effected by increasing the color scale?

Options:

The Nyquist limit is increased

More colors are displayed

The color box width decreases

The color priority decreases

Discussion 0

Question # 33

How is variable transmit focus with a linear phased array accomplished?

Options:

Mechanically rotate array elements

Reshaping the matching layers

Modifying the impedance of the acoustic lens

Adjusting relative delay times of the array elements

Discussion 0

Question # 34

What is the primary reason lateral resolution varies at different depths?

Options:

Beam width

Pulse length

Tissue texture

Acoustic impedance

Discussion 0

Question # 35

Which factor affects temporal resolution?

Options:

Display depth

Time gain compensation

Overall gain

Log compression

Discussion 0

Question # 36

What results from increasing the packet length when using color Doppler imaging?

Options:

Decreased penetration

Increased aliasing

Increased color noise

Decreased frame rate

Discussion 0

Question # 37

What is the result of increased transducer damping?

Options:

Longer pulse length

Increased sensitivity

Narrow beam width

Improved axial resolution

Discussion 0

Question # 38

What reduces speckle and increases visualization of specular reflectors and attenuated structures?

Options:

Elastography

Extended field of view

Pixel interpolation

Spatial compounding

Discussion 0

Question # 39

Which type of structure is best visualized with low persistence?

Options:

Anechoic

Static

Echogenic

Dynamic

Discussion 0

Question # 40

What affects lateral resolution?

Options:

Frame rate

Focal zone

Duty factor

Spatial pulse length

Discussion 0

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