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Body Logistics > Radiography > Flashcards

Radiography Flashcards

1
Q

What is the deterministic effect of radiation

A

Effects of radiation that only occur after a threshold has been reached

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2
Q

What are the effects of deterministic effects

A

Nausea, cataracts and erythema

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3
Q

What are stochastic affects of radiation

A

Effects in which the effect depends on the dose (no threshold dose level)

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4
Q

What are the effects of stochastic radiation

A

DNA disruption and cancer

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5
Q

What is radioactivity

A

The amount of ionising radiation released

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6
Q

What is exposure

A

The amount of radiation travelling through the air

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7
Q

What is absorption

A

The amount of radiation absorbed by a person or object

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8
Q

What is the dose equivalent

A

Combination of the amount of radiation absorbed and the medical effect of the radiation

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9
Q

What is dose equivalent measure in

A

Sievert

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10
Q

What is the value of background radiation

A

2.4 mSv

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11
Q

What considerations must be taken before exposure goes someone to radiation

A

Pregnancy stays, kidney problems, if better tests can be taken

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12
Q

What 3 planes can MRI scans be taken in

A

Axial, coronal and sagitaal

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13
Q

How can contrast medias be given

A

Orally, rectally, IV or IA

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14
Q

What is an example of a positive media

A

Iodine

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15
Q

What do positive contrast medias do

A

Give white images

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16
Q

What do negative contrast medias show

A

Black images

17
Q

Give an example of a negative contrast media

A

Water, air, CO2

18
Q

What are Idiosyncratic reaction

A

Reactions to contrast media occurring within 20 mins

19
Q

What are no -idiosyncratic reactions

A

Reactions to contrast media that occurs after 30mins from the dose

20
Q

Which type of osmolality are better to use for contrast medias

A

Low

21
Q

What is the main type of excretion of contrast media

A

Glomerular filtration

22
Q

What is the typical half life of constraint medias

A

30-60 mins

Body Logistics (18 decks)

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