Lecture 34 - Neuroradiology

Question 1

One chest CT has the same dose of ionizing radiation as ____ X-rays.

Answer 1

70

Question 2

CT is NOT a good mode for detecting _____ (acute or chronic?) infarction, and it does not provide good imaging of the _____ fossa.

Answer 2

Acute

Posterior

Question 3

The best way to distinguish between Subdural and Epidural hematomas is to see if the pool of blood extends past _____. If it does, it’s ______.

Answer 3

Sutures

Subdural

Question 4

In which structures of the brain would you see blood from a Subarachnoid Hemorrhage (SAH?)

Answer 4

In the Sulci

Question 5

______ is used as contrast material for CT because it is very dense (bright) with CT wavelengths.

Answer 5

Iodine

Question 6

If the Parenchyma of the brain show contrast enhancement with CT, this indicates an issue with the _______.

Answer 6

BBB

Question 7

CT WITH contrast should be done to image the _____, to image tumor and/or _____, if ______ is suspected, and to image the vasculature.

Answer 7

Neck

Mets

Infection

Question 8

T1 MRI imaging is used to visualize the anatomy.

T2 is _____-sensitive (appears very bright), and it is sensitive to ______ artifact.

T2 FLAIR is excellent at detecting ______.

Answer 8

Fluid-sensitive

Susceptibility artifact

Edema

Question 9

_______ _____ is excellent at detecting blood.

Answer 9

Gradient Echo

Question 10

MRI contrast is _______-based, and is contraindicated in patients with GFR < _____ (unlike CT contrast which no longer causes kidney issues).

Answer 10

Gadolinium-based

GFR < 30