Table 2:
Comparison of the accuracy and precision index, coefficient of variation, and concordance correlation coefficient for all dosing schemes using intermediate and low flip angle protocols at 1.5T and 3T
| Dosing Scheme (Preload + Bolus) | Intermediate Flip Anglea |
Low Flip Angleb |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.5T |
3T |
1.5T |
3T |
|||||||||
| CCC | CV% | API | CCC | CV% | API | CCC | CV% | API | CCC | CV% | API | |
| (0 + 1) | 0.30 | 21.7 | 0.08 | 0.55 | 12.4 | 0.43 | 0.93 | 8.7 | 0.84 | 0.92 | 8.2 | 0.83 |
| (1/4 + 3/4) | 0.51 | 13.3 | 0.38 | 0.74 | 8.8 | 0.65 | 0.94 | 8.9 | 0.85 | 0.94 | 7.8 | 0.86 |
| (1/2 + 1/2) | 0.61 | 12.7 | 0.48 | 0.76 | 9.2 | 0.67 | 0.91 | 10.6 | 0.80 | 0.90 | 8.7 | 0.82 |
| (1/4 + 1) | 0.86 | 7.9 | 0.78 | 0.93 | 6.8 | 0.86 | 0.96 | 7.7 | 0.89 | 0.97 | 7.0 | 0.90 |
| (1/2 + 1) | 0.90 | 7.7 | 0.82 | 0.96 | 6.8 | 0.89 | 0.96 | 7.5 | 0.89 | 0.97 | 6.8 | 0.91 |
| (1 + 1) | 0.94 | 7.4 | 0.86 | 0.97 | 6.6 | 0.91 | 0.96 | 7.4 | 0.89 | 0.98 | 6.8 | 0.91 |
FA = 60°, TE = 30 ms, TR = 1.5 sec.
FA = 30°, TE = 50 ms, TR = 1.5 sec, B0 = 1.5T; FA = 30°, TE = 30 ms, TR = 1.5 sec, B0 = 3T.