Statistics for perfusion metrics for all groupsa
| CTP before CTA | CTA before CTP | CTP with Flank Effect | CTP with Corrected Flank Effect | |
|---|---|---|---|---|
| Group | A | B | B flank | B corrected flank |
| No. of cases | 368 | 1563 | 49 | 49 |
| Age (yr) | 78.0 (18.5) | 76.0 (19.0) | 83.0 (10.2) | 83.0 (10.2) |
| P = .06 | P < .001 | P < .001 | ||
| Time gap (sec) | 91.5 (89.5) | 62.0 (67.0) | 18.0 (4.0) | 18.0 (4.0) |
| P < .001 | P < .001 | P < .001 | ||
| Baseline (HU) | 41.0 (3.0) | 45.0 (4.0) | 48.0 (6.2) | 45.0 (5.0) |
| P < .001 | P < .001 | P = .71 | ||
| Tmax (sec) | 1.7 (0.6) | 1.7 (0.5) | 2.1 (1.2) | 2.0 (0.9) |
| P = .054 | P < .001 | P < .001 | ||
| Core volume (mL) | 18.5 (18.0) | 18.0 (16.0) | 26.0 (38.5) | 23.0 (31.0) |
| P = .43 | P = .027 | P = .078 | ||
| Hypoperfusion volume (mL) | 44.5 (96.0) | 41.0 (76.0) | 67.0 (81.8) | 53.0 (85.0) |
| P = .2 | P < .001 | P < .001 |
↵a Median values, interquartile range (parentheses), and P values from a Wilcoxon rank sum test are reported.