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809 - Exam 1 > Lab - Orientation to Imaging > Flashcards

Lab - Orientation to Imaging Flashcards

1
Q

How does air appear on an x-ray

A

black or very dark

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2
Q

How does fat appear on an x-ray

A

gray and darker than muscle or blood

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3
Q

How does water (blood & soft tissue) appear on an x-ray

A

lighter gray

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4
Q

How does bone appear on an x-ray

A

white

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5
Q

How does metal (like implants) appear on an x-ray

A

white

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6
Q

How does air appear on a CT without contrast?

A

black or very dark

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7
Q

How does fat appear on a CT without contrast?

A

gray and darker than muscle or blood

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8
Q

How does water (blood & soft tissue) appear on a CT without contrast?

A

lighter gray

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9
Q

How does bone appear on a CT without contrast?

A

white

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10
Q

How does metal (like implants) appear on a CT without contrast?

A

white

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11
Q

What does an MRI - T1 (without contrast) highlight?

A

fat

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12
Q

How does air appear on an MRI - T1 (without contrast)

A

very dark

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13
Q

How does CSF & other water-based fluids appear on an MRI - T1 (without contrast)

A

dark

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14
Q

How does fat appear on an MRI - T1 (without contrast)

A

white (bright)

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15
Q

How does muscle appear on an MRI - T1 (without contrast)

A

gray

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16
Q

How does gray matter of the brain appear on an MRI - T1 (without contrast)

A

gray

17
Q

How does white matter of the brain appear on an MRI - T1 (without contrast)

A

white (bright)

18
Q

What does an MRI - T2 (without contrast) highlight?

A

water

19
Q

How does air appear on an MRI - T2 (without contrast)

A

very dark

20
Q

How does CSF & other water-based fluids appear on an MRI - T2 (without contrast)

A

white (bright)

21
Q

How does muscle appear on an MRI - T2 (without contrast)

A

gray to dark gray

22
Q

How does fat appear on an MRI - T2 (without contrast)

A

white (but not as bright as T1)

23
Q

How does gray matter of the brain appear on an MRI - T2 (without contrast)

A

light gray

24
Q

How does white matter of the brain appear on an MRI - T2 (without contrast)

A

dark gray

25
Q

How does fluid appear on an ultrasound?

A

darker

26
Q

How do solids (bone) appear on an ultrasound?

A

white

27
Q

How does soft tissue and more dense liquids appear on an ultrasound?

A

shades of gray

28
Q

How do blood vessels appear on an ultrasound with a doppler?

A

orange

29
Q

How does flow toward the probe appear on an ultrasound with a doppler?

A

red

30
Q

How does flow away from the probe appear on an ultrasound with a doppler?

A

blue

31
Q

How does turbulent flow appear on an ultrasound with a doppler?

A

mixed (red & blue)

32
Q

How are horizontal (transverse ; axial) images of CTs and MRIs shown?

A

as if you are viewing the patient from the foot of the patient’s bed

33
Q

Regarding horizontal (transverse ; axial) images of CTs and MRIs, the patient’s right side is on your ?

A

left

34
Q

What key features should you try and look for when looking at the overall shape of a CT or MRI to help determine the location/level in a horizontal (transverse ; axial) image?

A

nose & ears

35
Q

What prominent internal structures should you look for when in a CT or MRI to help determine the location/level in a horizontal (transverse ; axial) image?

A

Brain areas (cerebellum, brainstem, cerebral hemispheres)

Eyeballs, teeth, sinuses

36
Q

The body is divided into a series of what kind of slices in sagittal images of CT and MRIs?

A

left and right slices

37
Q

What should you look for to determine location in sagittal images of CTs and MRIs?

A

the overall shape of the head and facial structures

38
Q

The body is divided into a series of what kind of slices in coronal images of CT and MRIs?

A

anterior & posterior slices

39
Q

What should you look for to determine location in coronal images of CTs and MRIs?

A

facial structures or different brain areas

809 - Exam 1 (8 decks)

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