Other Modalities Flashcards by Jennifer Montoya

Q

MRI bone color

A

black

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Q

MRI T1 blood vessel color

A

blood vessels black

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Q

MRI T2 CSF color

A

white

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Q

MRI GAD blood vessel color

A

blood vessels white

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Q

MRI Pd shows what color

A

grey everywhere

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Q

CT bone color

A

white

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Q

MRI p+ used for imaging because

A

have highest gyromagnetic ratio of a natural nuclei & are present all over body

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Q

MRI T1 nasal mucosa tint

A

bright

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Q

MRI p+ do what

A

flip and align in correct direction

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Q

MRI p+ T1 demonstrate

A

less flip

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Q

MRI p+ T2 demonstrate

A

more angle

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Q

MRI T1 CSF is ?

A

Black

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Q

MRI T1 fat is ?

A

White

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Q

MRI T1 white matter is ? than grey

A

Brighter

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Q

MRI T2 CSF is ?

A

White

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Q

MRI T2 fat is ?

A

Black

Q

MRI T2 white matter is ? than grey

A

Darker

Q

CT X coordinate goes how?

A

L-R

Q

CT Y coordinate goes how

A

Sup-inf

Q

CT Z coordinate goes how

A

Ant-post

Q

CT # dense bone

A

+1000

Q

CT # bone

A

~ +600

Q

CT # muscle

A

~ +100

Q

CT # soft tissue/water

A

0

Q

CT # fat

A

~ -200 to -300

Q

CT # lung

A

~ -600 to -700

Q

CT # air

A

-1000

Q

MRI T1 what kind of relaxation time

A

spin lattice

- longitudinal

Q

MRI T2 relaxation time

A

spin-spin

- transverse

Q

Gadolinium alters

A

T1 & T2 relaxation time

Q

fMRI determines what activity

A

Physiologic & neurologic

Q

fMRI detects changes in

A

Blood flow with specific activity

Q

PET isotope emits

A

Positron

Q

PET positron collides with tissue and emits

A

G rays

Q

SPECT demonstrates

A

Blood flow to tissues and organs