Intensities Flashcards

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1
Q

Intensities can be reported in various ways in regard to _____ and _____.

A

Time; space

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2
Q

The different measurements of intensities are important when studying?

A

bioeffects

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3
Q

Which intensity is most relevant with respect to tissue heating?

A

SPTA (spatial peak temporal average)

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4
Q

What is the unit of all intensities?

A

W/cm^2

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5
Q

Which intensity has the highest value?

A

SPTP (spatial peak temporal peak)

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6
Q

Which intensity has the lowest value?

A

SATA (spatial average temporal average)

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7
Q

The beam uniformity coefficient is also called?

A

SP/SA factor

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8
Q

What does the beam uniformity coefficient represent?

A

the spread of the beam in space

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9
Q

The beam uniformity coefficient has a value?

A

equal to or greater than 1

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10
Q

The duty factor describes?

A

The relationship of the beam intensities with time

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11
Q

With continuous waves (beam is always “on”), which intensities are always the same?

A

pulse average and temporal average

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12
Q

The duty factor always has what value?

A

0-1

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13
Q

Spatial intensity refers to?

A

distance or space

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14
Q

True or False: An ultrasound beam has the different intensities at different locations

A

True

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