Lab - Orientation to Imaging

Question 1

How does air appear on an x-ray

Answer 1

black or very dark

Question 2

How does fat appear on an x-ray

Answer 2

gray and darker than muscle or blood

Question 3

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

Answer 3

lighter gray

Question 4

How does bone appear on an x-ray

Answer 4

white

Question 5

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

Answer 5

white

Question 6

How does air appear on a CT without contrast?

Answer 6

black or very dark

Question 7

How does fat appear on a CT without contrast?

Answer 7

gray and darker than muscle or blood

Question 8

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

Answer 8

lighter gray

Question 9

How does bone appear on a CT without contrast?

Answer 9

white

Question 10

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

Answer 10

white

Question 11

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

Answer 11

fat

Question 12

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

Answer 12

very dark

Question 13

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

Answer 13

dark

Question 14

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

Answer 14

white (bright)

Question 15

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

Answer 15

gray

Question 16

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

Answer 16

gray

Question 17

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

Answer 17

white (bright)

Question 18

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

Answer 18

water

Question 19

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

Answer 19

very dark

Question 20

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

Answer 20

white (bright)

Question 21

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

Answer 21

gray to dark gray

Question 22

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

Answer 22

white (but not as bright as T1)

Question 23

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

Answer 23

light gray

Question 24

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

Answer 24

dark gray

Question 25

How does fluid appear on an ultrasound?

Answer 25

darker

Question 26

How do solids (bone) appear on an ultrasound?

Answer 26

white

Question 27

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

Answer 27

shades of gray

Question 28

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

Answer 28

orange

Question 29

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

Answer 29

red

Question 30

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

Answer 30

blue

Question 31

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

Answer 31

mixed (red & blue)

Question 32

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

Answer 32

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

Question 33

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

Answer 33

left

Question 34

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?

Answer 34

nose & ears

Question 35

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?

Answer 35

Brain areas (cerebellum, brainstem, cerebral hemispheres) Eyeballs, teeth, sinuses

Question 36

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

Answer 36

left and right slices

Question 37

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

Answer 37

the overall shape of the head and facial structures

Question 38

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

Answer 38

anterior & posterior slices

Question 39

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

Answer 39

facial structures or different brain areas