Table 3.
Intra-observer comparisons
| Segments | 3D-RAMLA (mean ± SD) | TOF-OSEM (mean ± SD) | ||||||
|---|---|---|---|---|---|---|---|---|
| (N = 340) | First | Second | Difference | r | First | Second | Difference | r |
| Rest MBF | 0.839 ± 0.184 | 0.834 ± 0.189 | 0.033 ± 0.037 | 0.965 | 0.964 ± 0.204 | 0.947 ± 0.203 | 0.043 ± 0.044 | 0.956 |
| Stress MBF | 2.068 ± 0.715 | 2.048 ± 0.731 | 0.096 ± 0.086 | 0.985 | 2.160 ± 0.697 | 2.138 ± 0.702 | 0.102 ± 0.103 | 0.979 |
| MFR | 2.47 ± 0.75 | 2.46 ± 0.75 | 0.12 ± 0.12 | 0.974 | 2.24 ± 0.58 | 2.26 ± 0.57 | 0.12 ± 0.11 | 0.960 |
| Territories | 3D-RAMLA (mean ± SD) | TOF-OSEM (mean ± SD) | ||||||
|---|---|---|---|---|---|---|---|---|
| (N = 60) | First | Second | Difference | r | First | Second | Difference | r |
| Rest MBF | 0.840 ± 0.158 | 0.831 ± 0.159 | 0.024 ± 0.025 | 0.978 | 0.959 ± 0.169 | 0.939 ± 0.162 | 0.031 ± 0.025 | 0.979 |
| Stress MBF | 2.095 ± 0.665 | 2.065 ± 0.671 | 0.066 ± 0.046 | 0.994 | 2.159 ± 0.617 | 2.135 ± 0.617 | 0.072 ± 0.063 | 0.989 |
| MFR | 2.50 ± 0.71 | 2.48 ± 0.70 | 0.09 ± 0.08 | 0.986 | 2.25 ± 0.50 | 2.26 ± 0.49 | 0.09 ± 0.07 | 0.975 |
The intra-observer correlation for MBF and MFR was excellent for both TOF-OSEM and 3D-RAMLA reconstructions (r = 0.956 to 0.994). Difference, mean of the absolute difference between comparisons; r, correlation coefficient