Intra- and interobserver variability in renal multiparametric magnetic resonance imaging: T1 mapping, diffusion-weighted imaging, arterial spin labeling, blood oxygen level-dependent and renal artery flow measurements utilizing manual segmentation.

In these cases, the lower limit of the CI reached 1.00, suggesting a slight trend toward higher rater consistency in the low eGFR group compared to the high eGFR group.

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While T2* mapping parameters showed a marginal trend toward higher agreement in the low eGFR group, these ratios were very close to 1.0, suggesting that any difference in reliability is likely of minimal clinical impact.

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