022615 neuroradiologic anatomy

Question 1

which uses ionizing radiation: CT or MRI?

Answer 1

CT (x-rays)

Question 2

what format does CT come in?

Answer 2

axial scan

but can do coronal and sagittal reformats

Question 3

what kind of waves does MRI use?

Answer 3

radio waves

strong magnetic field (NOT ionizing radiation)

Question 4

planes of MRI?

Answer 4

image comes multiplanar (as opposed to CT which is one plane)

Question 5

does CT or MRI have safety issues w metal?

Answer 5

MRI

Question 6

CT or MRI: view images using diff settings (brain, bone, soft tissue, lung)

Answer 6

CT (MRI views each image w just one window)

Question 7

which is good at viewing bone (cortex)?

Answer 7

CT

Question 8

which is good for viewing soft tissues/tumors?

Answer 8

MRI (CT may be ok)

Question 9

which is good for viewing acute hemorrhage?

Answer 9

CT

Question 10

which is good for viewing trauma?

Answer 10

CT

Question 11

which is good for viewing fluid (CSF)?

Answer 11

CT

Question 12

mnemonic for CT

Answer 12

blood and bone are bright

Question 13

what is dark on CT, T1WI MRI, T2WI MRI?

Answer 13

air

Question 14

for CT: bright to dark substances

Answer 14

bone, hemorrhage, gray brain, white brain, CSF, fat, air

Question 15

for MRI T1: bright to dark substances

Answer 15

fat, white brain, gray brain, CSF, air and cortical bone

Question 16

for MRI T2: bright to dark substances

Answer 16

CSF, fat, gray brain, white brain, air and cortical bone