Other Modalities Flashcards

1
Q

MRI bone color

A

black

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2
Q

MRI T1 blood vessel color

A

blood vessels black

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3
Q

MRI T2 CSF color

A

white

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4
Q

MRI GAD blood vessel color

A

blood vessels white

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5
Q

MRI Pd shows what color

A

grey everywhere

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6
Q

CT bone color

A

white

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7
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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8
Q

MRI T1 nasal mucosa tint

A

bright

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9
Q

MRI p+ do what

A

flip and align in correct direction

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10
Q

MRI p+ T1 demonstrate

A

less flip

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11
Q

MRI p+ T2 demonstrate

A

more angle

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12
Q

MRI T1 CSF is ?

A

Black

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13
Q

MRI T1 fat is ?

A

White

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14
Q

MRI T1 white matter is ? than grey

A

Brighter

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15
Q

MRI T2 CSF is ?

A

White

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16
Q

MRI T2 fat is ?

A

Black

17
Q

MRI T2 white matter is ? than grey

A

Darker

18
Q

CT X coordinate goes how?

A

L-R

19
Q

CT Y coordinate goes how

A

Sup-inf

20
Q

CT Z coordinate goes how

A

Ant-post

21
Q

CT # dense bone

A

+1000

22
Q

CT # bone

A

~ +600

23
Q

CT # muscle

A

~ +100

24
Q

CT # soft tissue/water

A

0

25
Q

CT # fat

A

~ -200 to -300

26
Q

CT # lung

A

~ -600 to -700

27
Q

CT # air

A

-1000

28
Q

MRI T1 what kind of relaxation time

A
  • spin lattice

- longitudinal

29
Q

MRI T2 relaxation time

A
  • spin-spin

- transverse

30
Q

Gadolinium alters

A

T1 & T2 relaxation time

31
Q

fMRI determines what activity

A

Physiologic & neurologic

32
Q

fMRI detects changes in

A

Blood flow with specific activity

33
Q

PET isotope emits

A

Positron

34
Q

PET positron collides with tissue and emits

A

G rays

35
Q

SPECT demonstrates

A

Blood flow to tissues and organs