Neuroradiology

Question 1

Imaging techniques

Answer 1

Skull x rays

CT
MR
Cerebral angiography
Other techniques

Question 2

CT is imaging choice for

Answer 2

Head trauma
Intracerebral haemorrhage
Acute stroke

Question 3

Benefits of CT-

Answer 3

Examination takes 5-19 minutes (scan takes 39 secs)

Good visualisation of the brain

Volumetric acquisition reconstructed as 5 mm axial slices

Question 4

MRI procedure

Answer 4

W-3 sequences in different planes

T2 and T1 +/- contrast

Contraindications occur

Some people are claustrophobic which is a problem for the imaging

Question 5

MRI is sensitive in detecting

Answer 5

Cerebral or dam 
Gliosis 
Encephalitis 
Plaques of demyelination 
Acute infarcts

Question 6

What colour is bone on MR

Answer 6

Black

Question 7

T2 weighted imagine look like?

Answer 7

White matter darker than grey matter

Question 8

T1 weighted scan

Answer 8

Grey matter darker than white matter

Question 9

Flair scan

Answer 9

Like a 52 scan but with dark space in middle (cerebral spinal fluid)

Question 10

Cerebral angiography

Answer 10

Usually done under local anaesthetic
Catheter introduced into femoral artery and tip positioned in to the carotid and vertebral

Small (0.1%-1%) chance of stroke

Question 11

Scan patients with headache?

Answer 11

Most patients don’t need a scan

Tension headache

Migraine
Cranial arteritis
Sinusitis