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Abstract #4039

Non-invasive Assessment of Fibrosis and Inflammation in the whole kidney of CKD patients by Diffusion-Weighted Imaging with Readout-Segmented EPI

Iris Friedli 1 , Lindsey Alexandra Crowe 1 , Lena Berchtold 2 , Solange Moll 3 , Karine Hadaya 4 , Thomas De Perrot 1 , Pierre-Yves Martin 4 , Sophie De Seigneux 4 , and Jean-Paul Valle 1

1 Division of Radiology, Faculty of Medicine, Geneva University Hospital, University of Geneva, Geneva, Switzerland, 2 Division of Internal Medicine, Faculty of Medicine, Geneva University Hospital, University of Geneva, Geneva, Switzerland, 3 Division of Pathology, Faculty of Medicine, Geneva University Hospital, University of Geneva, Geneva, Switzerland, 4 Division of Nephrology, Faculty of Medicine, Geneva University Hospital, University of Geneva, Geneva, Switzerland

Whole kidney fibrosis and inflammation was non-invasively assessed with readout-segmented diffusion-weighted imaging in CKD patients. An internal validation study was performed using biopsy as a gold standard. A ΔADC, defined as the difference of mean ADC in the renal cortex and medulla improves fibrosis evaluation by comparison to ADC alone in renal transplant patients. Strong correlation was found comparing ΔADC (R2=0.70, p<0.001) to the fibrosis. A negative ΔADC was found in all patients with more than 40% of fibrosis suggesting the use of this index as predictor for renal fibrosis as confirmed by the results of the internal validation.

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