Radiology

Question 1

Pt in ED w/ sudden HA and collapsing. Some lethargy.
Rigid neck. No papilledema. No focal CN or motor signs.
Initial test should be?

Answer 1

CT head

Question 2

Advantage for CT head vs MRI?

Answer 2

Diagnosing acute epidural hemorrhage

Question 3

Gadolinium contrast in MRI scans is most specifically useful for diagnosing pts with diseases affecting which of the following structures?

Answer 3

Blood brain barrier

Question 4

CT is preferable over MRI in which situation?

Answer 4

70 y/o F who fell at home and now has decreased level of consciousness

Question 5

Neuroimaging that measures neuronal glucose metabolism

Answer 5

PET scan

Question 6

CT scan is better than MRI for what?

Answer 6

Differentiating hemorrhaging from edema

Question 7

What does a functional MRI do?

Answer 7

Detects blood flow

Question 8

65 y/o has first generalized tonic-clonic seizure seen by spouse and has been confused and lethargic since. Episode began with repetitive shaking of R arm. Lab tests wnl and no hx of other recent symptoms, trauma, or metabolic d/o. What study will likely reveal cause?

Answer 8

Brain MRI