Sos: Planar Neuroimaging

Question 1

33-year-old construction worker presents to the ED with a one week history of “the worse headache I have ever had”

Answer 1

subarachnoid hemorrhage

Question 2

best and quickest test to get in ED of the brain

Answer 2

CT

Question 3

best imaging modalities to use for brian

Answer 3

CT and MRI

Question 4

what cut

Answer 4

coronal

Question 5

what cut

Answer 5

horizontal (axial)

Question 6

what cut

Answer 6

sagittal

Question 7

thousands of x-rays put together

Answer 7

CT (computerized tomography)

Question 8

viewing from foot of bed; what is orientation

Answer 8

R to L

Question 9

bone, calcifications and clotted blood appear what color on CT

Answer 9

white (hyperdense tissues)

Question 10

air, fat, CS fluid, infarct appear what color on CT

Answer 10

black (hypodense tissues)

Question 11

gray and white matter and flowing blood appear what color on CT

Answer 11

gray (isodense tissues)

Question 12

contains myelin which has a high lipid content and appears slightly darker than gray matter

Answer 12

white matter

Question 13

used with IV contrast and highlights vasculature; takes time

Answer 13

Contrast enhanced CT

Question 14

to use or not to use contrast enhanced CT with intracranial hemorrhage (<1 week old and appears hyperdense)

Answer 14

no contrast

Question 15

intracranial hemorrhage
skull fractures
mass effect

Answer 15

when to use CT

Question 16

In the ED, fast, useful tool that can drive the clinical plan for the patient

Answer 16

CT

Question 17

uses magnetic field and electromagnetic energy waves

Answer 17

MRI (magnetic resonance imaging)

Question 18

what type of MRI

Answer 18

T1-weighted

Question 19

gray matter is gray and white matter is white on this MRI

Answer 19

T1

Question 20

gray and white matter color are switched on this type of MRI (useful for what disease)

Answer 20

T2-weighted (MS)

Question 21

this type of MRI highlights blood vessels

Answer 21

contrast enhanced MRI

Question 22

lights up bone

Answer 22

CT

Question 23

bone is not lit up on this imaging

Answer 23

MRI

Question 24

30-yr-old man attacked by his girlfriend’s husband at a bar

Answer 24

epidural hematoma

Question 25

_____ artery lysed that causes epidural hematoma

Answer 25

middle meningeal a.

Question 26

70-yr-old man presents to the ED after falling down the stairs at his home

Answer 26

acute subdural hematoma

Question 27

45-year-old man presents to the ED with the worse headache of his life

Answer 27

subarachnoid hemorrhage

Question 28

main thing to keep compression and herniation away from in the brain

Answer 28

brain stem

Question 29

acute infarct from occluded_______ artery on CT

Answer 29

anterior cerebral artery

Question 30

acute infarct from occluded ______ artery on CT

Answer 30

middle cerebral artery

Question 31

Answer 31

AV malformation

Question 32

what imaging (detects metastatic cancer)

Answer 32

PET scan

Question 33

detects movement of protons in water molecules; provides more detailed info

Answer 33

diffusion-weighted MRI

Question 34

highlights white matter black; useful in detecting white matter diseases such as MS

Answer 34

FLAIR MRI

Question 35

imaging type; what is the mass

Answer 35

CT; brain bleed