Comparison of mean NCCT, CTA-SI, CT-CBV, and follow-up DWI ASPECTS (repeated measures ANOVA with the Bonferroni multiple comparisons test)*
| NCCT | CTA-SI | CT-CBV | DWI | |
|---|---|---|---|---|
| Mean Score (SD) | 8.4 (1.8) | 8.0 (1.8) | 6.8 (1.9) | 6.5 (1.8) |
| NCCT | [−0.23–1.2]‡ | [0.95–2.3]† | [1.3–2.7]† | |
| CTA-SI | [0.49–1.9]† | [0.81–2.2]† | ||
| CT-CBV | [−0.37–1.0]‡ |
Note:—NCCT indicates noncontrast CT; CTA-SI, CT angiography source images; CT-CBV, CT perfusion cerebral blood volume maps; ANOVA, analysis of variance.
* 95% CIs of the difference in mean ASPECTSs are in brackets.
† Significant P value <.05.
‡ Not significant.