Introduction to neuroimaging

Question 1

Describe the colour of grey matter, white matter, CSF, and protein in T1 weighted MRI.

Answer 1

Grey matter – darker
White matter – brighter
CSF – black
Protein – brighter

Question 2

Describe the colour of grey matter, white matter, CSF, and protein in T2 weighted MRI.

Answer 2

Grey matter – brighter
White matter – darker
CSF – white
Protein – darker

Question 3

Which dural venous sinuses are found at the top and bottom of the falx cerebri on scans?

Answer 3

Superior and inferior sagittal

Question 4

Which dural venous sinus can be found at the attachment point of the tentorium cerebelli to the cranium on scans?

Answer 4

Transverse sinus

Question 5

On a brain scan with the outline of a bear, what are the eyes, nose, and mouth?

Answer 5

Eyes – occipital horns of the lateral ventricles

Nose – quadrigeminal cistern

Mouth – 4th ventricle

Question 6

Which structure connects the 3rd ventricle to the 4th ventricle?

Answer 6

Cerebral aqueduct

Question 7

Epidural haematomas most commonly occur from a bleed from which artery?

Answer 7

Meningeal artery

Question 8

Subdural haematomas most commonly occur from a bleed from which vessels?

Answer 8

Bridging veins

Question 9

Subarachnoid haematomas most commonly occur from a bleed from which artery?

Answer 9

Cerebral artery

Question 10

What shape are epidural haematomas on scans?

Answer 10

Elliptical

Question 11

Explain how you can differentiate between an acute and long term subdural haematoma on a scan.

Answer 11

Fresh blood will appear white, older blood will appear darker

Question 12

What are the 3 types of herniation resulting from increased intra-cranial pressure?

Answer 12

Subfalcine

Transtentorial

Uncal

Question 13

Which CN is most likely to be compressed in a herniation resulting from increased IC pressure?

Answer 13

CN III – oculomotor