Table 3.

Repeated imaging findings

Imaging modality	All patients (n=165)	Clinical improvement* (n=86)	Clinical deterioration† (n=40)
NCCT‡
Symptomatic ICH	0/120 (0%)	0/50 (0%)	0/38 (0%)
Asymptomatic ICH	1/120 (1%)	0/50 (0%)	0/38 (0%)
CTA§
Persistent LVO	67/124 (54%)	36/86 (42%)	10/13 (77%)
Same segment	55/124 (44%)	28/86 (33%)	8/13 (62%)
Distal migration	11/124 (9%)	8/86 (9%)	2/13 (15%)
New vascular territory	1/124 (1%)	0/86 (0%)	0/13 (0%)
LVO resolved	57/124 (46%)	50/86 (58%)	3/13 (23%)

*Median Δ NIHSS score between PSC and CSC: −5 (−8 to −2).

†Median Δ NIHSS score between PSC and CSC: 6 (3 to 9).

‡NCCT was repeated in 120/165 patients (73%); 50/86 (58%) of patients with clinical improvement and 38/40 (95%) of patients with clinical deterioration.

§CTA was repeated in 124/165 patients (75%); all patients with clinical improvement and 13/40 (33%) of patients with clinical deterioration.

CSC, comprehensive stroke center; CTA, CT angiography; ICH, intracranial hemorrhage; LVO, large vessel occlusion; NCCT, non-contrast CT; PSC, primary stroke center.