Axial And Lateral Flashcards

1
Q

What is the minimum distance that two structures positioned front to back can be apart and still produce 2 distinct echoes on us

A

Axial resolution

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2
Q

Axial resolution is determined by

A

SPL

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3
Q

Axial resolution synonyms

A

Longitudinal, range, radial, depth resolution

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4
Q

What is the minimum distance that 2 structures positioned side by side can be apart and still produce 2 distinct echoes on us

A

Lateral resolution

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5
Q

Lateral resolution is determined by the ___ of the sound beam

A

width

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6
Q

Lateral resolution synonyms

A

angular, transverse, and azimuthal (LATA)

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7
Q

T/F narrower beams have better lateral resolution

A

TRUE

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8
Q

In far field, lateral resolution is best with ___ diameter and ___ frequency

A

largest and highest

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9
Q

Axial resolution is determined by

A

Pulse duration or SPL

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10
Q

Lower or higher numerical value is best for axial resolution

A

Lower

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11
Q

Axial resolution formula

A

SPL/2

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12
Q

Best axial resolution characteristics with cycles and frequency

A

Low cycles, high frequency

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13
Q

What is considered internal focusing

A

curved crystal

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14
Q

What is considered external focusing

A

lens

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15
Q

What technique is consistent with variable and multifocusing

A

electronic

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16
Q

What term means adjustable focusing or multi-focusing

A

Phased array

17
Q
A