Tu - Role, CT, radiation protection lectures Flashcards

1
Q

What does ICRP stand for?

A

International Comission on Radiological Protection

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2
Q

What does ALARA in radiology stand for?

A

As low as reasonably achievable

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3
Q

What kind of things does deterministic effects damage?

A

Cells

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4
Q

What kind of things does stochastic effects damage?

A

DNA

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5
Q

Effects of deterministic effects (do/do not) vary widely between people

A

Do not vary widely

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6
Q

Effects of stochastic effects (do/do not) vary widely between people

A

Do vary widely

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7
Q

What kind of effects are: hair loss, erythema, stare in radiology?

A

Deterministic

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8
Q

What kind of effects are: malignity, genetic damage in radiology?

A

Stochastic

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9
Q

What does the equivalent dose account for? What is the unit?

A

Different types of radiation, Sv

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10
Q

What does the stochastic dose account for? What is the unit?

A

Different sets of organs, Sv

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11
Q

What is the square distance law?

A

The farther away you are from the radiation, the less radiation you will get, it’s a squared equation.

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12
Q

What happens to the contrast and dose in X-rays when the kV goes up?

A

Contrast down, dose down

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13
Q

What happens to the contrast and dose in X-rays when the mA/mAs goes up?

A

Contrast stays constant, dose goes up

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14
Q

What happens to the contrast and dose in X-rays when they add pulses?

A

Contrast stays constant, dose goes up

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15
Q

What happens to the contrast and dose in X-rays when they add a filter?

A

Contrast down, dose down

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16
Q

What happens to the contrast and dose in X-rays when the size field goes up?

A

Contrast down, dose up

16
Q

What happens to the contrast and dose in X-rays when the size field goes up?

A

Contrast down, dose up

17
Q

What happens to the contrast and dose in X-rays when the posture goes up?

A

Contrast down, dose up

18
Q

What happens to the contrast and dose in X-rays when the grating goes up?

A

Contrast up, dose up

19
Q

Why does dual energy CT have different sensitivity to different kinds of tissues?

A

Because there are different photographs made with different energy levels