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.