Table 2. Associated factors and change in occluded sites in sequential imaging.

	Distal change in occluded site in sequential imaging (Group A) (n = 55)	No change in occluded site in sequential imaging (Group B) (n = 148)	P value
Initial noninvasive vascular imaging			<0.01
CTA (n = 23)	1	22
MRA (n = 180)	54	126
Occluded site			<0.01
ICA (n = 77)	7	70
MCA (n = 126)	48	78
TICI grade ≥2b (n = 187)	51	136	0.9
mRS 0–2 at 90 days (n = 119)	35	84	0.3

ICA: internal carotid artery, MCA: middle cerebral artery, mRS: modified Rankin scale, TICI: thrombolysis in cerebral infarction.