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Abstract #4631

Assessing Renal Interstitial Fibrosis by Compartmental, Non-Compartmental, Model-Free Diffusion MRI and Their Corticomedullary Difference

Wentao Hu1, Yongming Dai2, Fang Liu1, Dongmei Wu3, Minfang Zhang4, and Yan Zhou1
1Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China, 2School of Biomedical Engineering, ShanghaiTech University, Shanghai, China, 3Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronics Science, East China Normal University, Shanghai, China, 4Nephrology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China

Synopsis

Keywords: Kidney, Kidney

Motivation: Non-invasive evaluation of chronic kidney disease (CKD) is of increasing value.

Goal(s): This study aims to assess renal interstitial fibrosis (IF) using diffusion-based MRI approached and their corticomedullary difference (CMD) in CKD patients.

Approach: MRI parameters from apparent diffusion coefficient (ADC), intra-voxel incoherent motion (IVIM), diffusion kurtosis imaging (DKI) and diffusion-relaxation correlated spectrum imaging (DR-CSI) were obtained both for renal cortex and medullary. CMD of these parameters were calculated.

Results: Several diffusion-based MRI parameters are promising for differentiating between the mild and moderate-severe renal IF. CMD shows potential for the assessment of renal IF on a supplementary role.

Impact: This study shows attempts on non-invasive assessment of renal interstitial fibrosis using several typical advanced model or model-free methods regarding diffusion MRI. Also, it illustrates the possible role of renal corticomedullary difference of these approaches in the assessment.

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Keywords