Table 6.
Intra-individual CV and ICC values for the evaluation of data repeatability of MRI biomarkers in HVs and DKD subjects
| Variable | CV | ICC |
|---|---|---|
| Kidney haemodynamics | ||
| MAF (mL/min/1.73 m2) | 0.07 | 0.97 |
| PSV (cm/s) | 0.09 | 0.90 |
| EDV (cm/s) | 0.12 | 0.96 |
| RARI | 0.02 | 0.96 |
| ASL perfusion cortex (mL/min/100 g) | 0.33 | 0.71 |
| Global perfusion (mL/min/100 g) | 0.09 | 0.92 |
| Kidney macrostructure | ||
| Kidney volume (mL/1.73 m2) | 0.07 | 0.89 |
| Kidney oxygenation | ||
| BOLD R2* cortex (per s) | 0.04 | 0.74 |
| BOLD R2* medulla (per s) | 0.05 | 0.90 |
| Kidney microstructure | ||
| ADC cortex (10−3 mm2/s) | 0.06 | 0.66 |
| ADC medulla (10−3 mm2/s) | 0.05 | 0.66 |
| R1 cortex (per s) | 0.02 | 0.94 |
| R1 medulla (per s) | 0.02 | 0.49 |
| IVIM D cortex (10−3 mm2/s) | 0.11 | 0.29 |
| IVIM D medulla (10−3 mm2/s) | 0.09 | 0.37 |
| IVIM D* cortex (10−3 mm2/s) | 4.97 | 0.00 |
| IVIM D* medulla (10−3 mm2/s) | 5.30 | 0.00 |
| IVIM f cortex (%) | 0.30 | 0.21 |
| IVIM f medulla (%) | 0.25 | 0.46 |
| MTR cortex (%) | 0.08 | 0.31 |
| MTR medulla (%) | 0.11 | 0.01 |
| Biochemistry | ||
| eGFR (mL/min/1.73 m2) | 0.06 | 0.99 |
| UACR (mg/mmol) | 0.28 | 0.96 |