Table 3

Repeated imaging findings

Imaging modalityAll patients (n=165)Clinical improvement* (n=86)Clinical deterioration† (n=40)
NCCT‡
 Symptomatic ICH0/120 (0%)0/50 (0%)0/38 (0%)
 Asymptomatic ICH1/120 (1%)0/50 (0%)0/38 (0%)
CTA§
 Persistent LVO67/124 (54%)36/86 (42%)10/13 (77%)
  Same segment55/124 (44%)28/86 (33%)8/13 (62%)
  Distal migration11/124 (9%)8/86 (9%)2/13 (15%)
  New vascular territory1/124 (1%)0/86 (0%)0/13 (0%)
 LVO resolved57/124 (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.