M Part II Flashcards by Queenie Francisco | Brainscape

Q

Localizer Scan [describe]

A

Scanogram/Topogram
-not cross sectional
-slightly poor image quality bc same exposure factor is used from chest to abdomen

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Q

Reasons why iodinated contrast is universally used

A

Water soluble
Easy to administer intravascularly
High safety index

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Q

Reason iodine is used

A

High attenuation compared to ST (z=53)

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Q

Two tissues must differ at least […] HU to be visibly differentiated

A

10

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Q

CM provides [..] HU increase

A

40-75

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Q

Refers to the no. Of particles in solution per unit liquid as compared to blood

A

Osmolality

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Q

Safety features will depend on [..]

A

Osmolality

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