Table 2.
Multi-parametric MRI measures in CKD patients [shown as mean ± SD or median (IQR) dependent on normality] and assessment of their repeatability as defined by the intra-subject CoV and ICC
| Mean ± SD or | CoV (%) | ICC | |
|---|---|---|---|
| median (IQR) | |||
| Cortical T1 SE-EPI (ms) | 1574 ± 74 | 2.9 | 0.76 |
| Medullary T1 SE-EPI (ms) | 1754 ± 50 | 3.9 | 0.47 |
| Cortical T1 bFFE (ms) | 1403 ± 76 | 2.4 | 0.91 |
| Medullary T1 bFFE (ms) | 1604 ± 98 | 3.4 | 0.68 |
| Cortical ADC (×10−3 mm2/s) | 2.0 (0.2) | 5.3 | 0.69 |
| Medullary ADC (×10−3 mm2/s) | 2.0 ± 0.2 | 14 | 0.65 |
| Cortical D (×10−3 mm2/s) | 1.7 ± 0.2 | 7.7 | 0.49 |
| Medullary D (×10−3 mm2/s) | 1.8 ± 0.2 | 22 | 0.47 |
| Cortical R2* (/s) | 20.0 ± 3.2 | 4.6 | 0.90 |
| Medullary R2* (/s) | 33.0 ± 8.0 | 6.8 | 0.91 |
| Cortical perfusion (mL/100 g/min) | 71 (50) | 23 | 0.67 |
| Total renal artery flow (mL/min) | 490 (170) | 18 | 0.86 |
| Kidney volume corrected total renal artery flow (mL/100 g/min) | 130 (110) | 18 | 0.76 |
| Total kidney volume/BSA (mL/m2) | 170 (39) | 3.8 | 0.94 |