CT - CT brain
Axial non-contrast
How would you further assess it?
CT angiography is most frequently used, although both MR angiography and catheter digital subtraction angiography could also be employed.
Non contrast CT scan through the brain demonstrates no acute abnormality. Extensive periventricular low density is in keeping with small vessel ischaemic change, most likely chronic. On the right a rounded density is seen in the sylvian fissure, which appears to be in continuity with the right MCA and contains a focus of peripheral calcification. The supraclinoid ICA on the left is bulbous. No evidence of subarachnoid haemorrhage.