Osborn's Brain 2nd ed

Question 1

MRI findings characteristic of Wilson's disease*
A. Eye of the tiger sign
B. Face of the giant panda
C. Piglet sign
D. Tiger stripe appearance

Answer 1

B. Face of the giant panda (p. 990)

Question 2

MRI findings in bacterial meningitis*
A. The purulent exudates are hyperintense to underlying brain on T1WI, giving the appearance of “dirty” CSF
B. Exudates are isointense with CSF on T2WI and suppress on FLAIR
C. Hyperintensity in the subarachnoid cisterns and superficial sulci on FLAIR
D. Dura-arachnoid enhancement is more common than pial-cisternal pattern

Answer 2

C. Hyperintensity in the subarachnoid cisterns and superficial sulci on FLAIR (p. 349)

Question 3

MRI findings in TB meningitis EXCEPT*
A. Basilar exudates are isointense with brain on T1WI giving the appearance of “dirty” CSF
B. FLAIR scans show increased signal intensity in the sulci and cisterns
C. Marked linear or nodular meningeal enhancement is seen on T1 C+ sequences
D. Pachymeningitis with or without involvement of the underlying SAS is common
E. CNs II, III, IV, and VII appear thickened and enhance intensly on postcontrast images

Answer 3

D. Pachymeningitis with or without involvement of the underlying SAS is common (pp. 380-381)

Question 4

Most common opportunistic infection and overall cause of a mass lesion in patients with HIV/AIDS*
A. Toxoplasmosis
B. TB
C. Cryptococcosis
D. Fungal infection

Answer 4

A. Toxoplasmosis (p. 426)

Question 5

Timing of hyperacute stroke

Answer 5

<6 hours from symptom onset (p. 208)

Question 6

Timing of acute stroke

Answer 6

6-48 hours from symptom onset (p. 208)

Question 7

Nearly all strokes are FLAIR positive by how many hours following symptom onset?

Answer 7

7 hours (p. 215)

Question 8

Dot sign on NECT

Answer 8

Acute ischemic stroke (p. 220)

Question 9

Early signs of acute infarction*

Answer 9

Loss of GM-WM differentiation
Insular ribbon sign
Dense MCA sign
Obsucred lentiform nucleus
Sulcal efffacement

Question 10

Meniscus sign on DSA

Answer 10

Acute ischemic stroke (p. 220)

Question 11

Size of lacunar infarction*

Answer 11

3- to 15-mm (p. 227)

Question 12

MRI findings in acute intraparenchymal hemorrhage*
A. DWI bright, T1 isointense, T2 bright
B. DWI dark, T1 isointense, T2 dark
C. DWI dark, T1 bright, T2 dark
D. DWI bright, T1 bright, T2 bright
E. DWI dark, T1 dark, T2 dark

Answer 12

B. DWI dark, T1 isointense, T2 dark (Table 5-1, p. 105)

Question 13

MRI findings in early subacute hemorrhage*
A. DWI +, T1 isointense, T2 bright
B. DWI -, T1 isointense, T2 dark
C. DWI -, T1 bright, T2 dark
D. DWI -, T1 bright, T2 bright

Answer 13

C. DWI -, T1 bright, T2 dark (Table 5-1, p. 105)

Question 14

Radiographic sign which shows an actively bleeding EDH

Answer 14

Swirl sign (p. 21)

Question 15

SAH that is 2 mm thick with IVH*
A. Fisher grade 1
B. Fisher grade 2
C. Fisher grade 3
D. Fisher grade 4

Answer 15

D. Fisher grade 4 (Table 6-1, p. 125)

Question 16

MRI findings in aneurysmal SAH*
A. Dirty CSF on T1WI
B. Hyperdense basilar cisterns
C. Contrast-enhancing membranes
D. None of the above

Answer 16

A. Dirty CSF on T1WI (p. 129)

Question 17

Saccular aneurysms lack which blood vessel layers?

Answer 17

Internal elastic lamina
Tunica media
(p. 139)

Question 18

The trigeminal ganglion is located in between to folds of dura called*
A. Meckel's cave
B. Cavernous sinus
C. Sella turcica
D. Diaphragma sellae

Answer 18

A. Meckel’s cave (p. 774)

Question 19

MRI findings in DAI*
A. T2WI and FLAIR may show hyperintense foci in the subcortical white matter and corpus callosum
B. Multiple cortical lesions
C. Gross intraventricular hemorrhage
D. None of the above

Answer 19

A. T2WI and FLAIR may show hyperintense foci in the subcortical white matter and corpus callosum (p. 44)

Question 20

MRI findings in early subacute ICH*
A. DWI -, T1 bright, T2 dark
B. DWI +, T1 bright, T2 dark
C. DWI +, T1 bright, T2 bright
D. DWI -, T1 bright, T2 bright

Answer 20

A. DWI -, T1 bright, T2 dark (p. 105 Table 5-1)