Taton B, et al. - Via prospectively studying 42 kidney transplant recipients (KTRs; mean age 51.5 years, 26 – 74) with an indication for non-urgent contrast-enhanced MRI between 2008 and 2012, researchers evaluated the performance of dynamic contrast-enhanced MRI measurement of glomerular filtration rate (GFR) compared with the reference standard technique of urinary clearance of ⁵¹Cr-EDTA. Outcomes revealed a large variability of MR-GFR compared with the reference technique. This prevents its use in KTRs, whose anatomical peculiarities make standardization of arterial input function (AIF) difficult.