Asymmetrically hypointense veins on T2*w imaging and susceptibility-weighted imaging in ischemic stroke

Table 3 Comparison of publications using T2*w imaging and susceptibility-weighted imaging n (%)

	T2*w imagingpublications (patients)	SWIpublications (patients)
Number of publications	17 (692)1	27 (518)1
Presence of vessel signs	54%	81%
	16 (668)	21 (334)
Interrater agreement	κ = 0.7 to > 0.9 and ICC = 0.99	-
	6 (210)
Reliability assessment	r = 0.92-0.96	-
	1 (20)
Occluded vessel
Anterior circulation	12 (598)1	22 (331)1
Large arteries	1 (20)	-
Critical MCA stenosis	1 (2)	-
TIA	-	1 (9)
BA	-	1 (1)2
NS	3 (72)3	4 (178)
Time from onset
≤ 6 h	9 (317)	2 (18)4
> 6 h	5 (282)	12 (364)1
3.5-8.5 h	-	1 (49)
NS	3 (93)3	13 (87)
Outcome
Worse outcome	1 (49)	3 (161)
Better NIHSS improvement	4 (107)	-
Better outcome with normalisation	-	1 (19)
No correlation	3 (141)	1 (44)
Validation method
DSC-MRI	7 (260)	10 (181)
FAIR	3 (81)	1 (30)
Conventional MRI	3 (234)	11 (242)
15O-PET	1 (NS)	-
DSA	1 (22)	-
Field strength
1.5 T	3 (97)	7 (83)
3 T	8 (205)	3 (80)
NS	6 (390)13	17 (355)15

¹Including one publication using T2*w imaging and susceptibility-weighted imaging (SWI) (Sohn et al[49]), thus the total number of studies and patients differs from the one stated in the main text;

²Including one patient with occluded BA (Baik et al[47]);

³Number of subjects not stated (Kinoshita et al[18]);

⁴Including 17 patients ≤ 6 h and 2 patients > 6 h (Baik et al[47]);

⁵Including those who used 1.5 T and 3 T (Baik et al[47]). NS: Not stated; ICA: Internal carotid artery; MCA: Middle cerebral artery; BA: Basilar artery; TIA: Transient ischemic attack; DSC-MRI: dynamic susceptibility-contrast magnetic resonance imaging; FAIR: Flow sensitive alternating inversion recovery;

¹⁵O-PET: Oxygen-15 positron emission tomography; DSA: Digital subtraction angiography; NIHSS: National Institute of Health Stroke Score.