Table 1.

Summary of clinical and neuroradiological data

CLINICAL FEATURES (n = 585)
Headache	320/560 (57.1%)
Cognitive impairment	190/445 (42.7%)
Stroke/TIA	96/216 (44.4%)
Focal neurological deficits	≥ 340/564 (≥ 60.3%)
Seizure	144/536 (26.9%)
Impaired level of consciousness	67/219 (30.6%)
Psychiatric/mood disorders	31/148 (20.9%)
MRI (n = 558 patients)
Multiple lesions	228/334 (68.3%)
Single lesion	26/222 (11.7%)
Infarction	280/445 (62.9%)
Intraparenchymal or subarachnoid hemorrhage	78/380 (20.5%)
ENHANCED MRI (n = 425 patients)
Parenchymal or meningeal contrast enhancement	198/425 (46.6%)
Black blood MRI (n = 20 patients)
Vessel wall contrast enhancement	17/20 (85%)
MRA (n = 352 patients)
Vessel abnormalities	240/352 (68.2%)