Table 2:
ICC and 95% CIs for inter- and intraobserver measurements of BF, BV, MTT, and PS
| Perfusion Parameter | ICC | 95% CI |
|---|---|---|
| Interobserver: expert reader A vs nonexperienced reader | ||
| BF | 0.98 | 0.95–0.99 |
| BV | 0.88 | 0.76–0.95 |
| MTT | 0.78 | 0.57–0.90 |
| PS | 0.67 | 0.39–0.84 |
| Interobserver: expert reader B vs nonexperienced reader | ||
| BF | 0.99 | 0.99–1.00 |
| BV | 0.91 | 0.80–0.96 |
| MTT | 0.77 | 0.55–0.89 |
| PS | 0.94 | 0.87–0.97 |
| Interobserver: expert reader A vs expert reader B | ||
| BF | 0.98 | 0.96–0.99 |
| BV | 0.95 | 0.88–0.98 |
| MTT | 0.94 | 0.87–0.97 |
| PS | 0.65 | 0.36–0.82 |
| Intraobserver: expert reader A | ||
| BF | 0.99 | 0.98–1.00 |
| BV | 0.95 | 0.93–0.98 |
| MTT | 0.97 | 0.95–0.99 |
| PS | 0.70 | 0.55–0.83 |
| Intraobserver: expert reader B | ||
| BF | 1.00 | 0.99–1.00 |
| BV | 0.99 | 0.98–0.99 |
| MTT | 0.94 | 0.90–0.97 |
| PS | 0.87 | 0.79–0.93 |
Note:—ICC indicates interclass correlation coefficient; CI, confidence interval; BF, blood flow; BV, blood volume; MTT, mean transit time; PS, permeability surface area product.