Table 1.

Patients’ clinical and radiological characteristics

Pat. no.	Symptoms	Episodes (duration)	Localization fSAH	Delay last episode to CT/MRI	CT positive	MRI			EEG
						fSAH positive	SS	MB
1	Left-sided sensory deficits	>1 (5–15 min)	Right precentral	<24 h / <24 h	Yes	FLAIR, FFE, T1w+/-Gd	None	None	Normal
2	Aphasia, numbness (right upper extremity)	2 (10–30 min)	Left precentral	<24 h / <24 h	Yes	FLAIR, FFE,DWI, T1w+/-Gd	Bilateral frontoparietal	None	Theta patterns left occipital
3	Aphasia, psychomotor deficits, spreading hypaesthesia (right hand)	>1 (10–30 min)	Left central	<24 h / <48 h	Yes	FLAIR,FFE, T1w+/-Gd	Front partial & pontine	12	Alpha pattern (8/s) delta decelerations left parietotemporal
4	Left-sided paraesthesia	>1 (5–10 min)	Right central	2d /5d	Yes	FLAIR,FFE, T2w,T1w	Bilateral frontal	18	Normal
5	Vertigo, fluctuating left-sided sensomotory deficit	4 (10-30 min)	Right central	<24 h / <48 h	Yes	FLAIR,FFE, T2w,DWI, T1w+/-Gd	None	>20	n.a.
6	Acute cognitive deficits, mild right-sided hypaesthesia	>1 (5–10 min)	Left precentral	<24 h / <48 h	Yes	FLAIR,FFE, T2w,T1w + Gd	Bilateral frontoparietal	>30	Slowed baseline activity, intermittent generalized decelerations
7	Hypaesthesia (left face/hand)	3 (5 min)	Right central	<24 h / <24 h	Yes	FLAIR,FFE, T2w,DWI, T1w+/-Gd	Bilateral frontoparietal & temporal	None	Normal