Neuroradiology Flashcards
1
Q
What colour is soft tissue on X ray?
A
Grey
2
Q
What colour is air on X ray?
A
Black
3
Q
What colour are bones on X ray?
A
White
4
Q
What colour are bones on CT?
A
White
5
Q
What colour is air on CT?
A
Black
6
Q
What colour is CSF on CT?
A
Black
7
Q
What colour is the brain on CT?
A
Grey with subtle grey-white matter difference
8
Q
What colour is the skull on MRI?
A
Black
9
Q
What colour is subcutaneous fat on MRI?
A
White
10
Q
What colour is CSF on MRI?
A
White
11
Q
Which of CT or MRI has better white-grey matter differentiation?
A
MRI
12
Q
Common indications to perform CT scan (neuro)
A
Head trauma Acute stroke Headache Cancer (metastatic brain tumours) Post surgical (hydrocephalus, haemorrhage)
13
Q
Reasons not to perform a CT scan
A
Minor head trauma (exclusion criteria)
Seizure (generally chose MRI)
14
Q
Indications to perform MRI scan (neuro)
A
Demyelination CNS tumours Spine for intervertebral disc prolapse TIA Epilepsy Paediatric neurology Headache Cancer
15
Q
Contraindications to MRI
A
Implanted electronics - defibs - pacemakers - cochlear implants - programmable shunts - insulin pumps Moveable metallic implants - aneurysm clips - heart valves - recent intraabdominal clips Claustrophobia Pregnancy Tattoos
