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Abstract #3644

Accurate Estimation of Kidney Volume Growth Rates from abdominal MRI via Fitting to multiple Imaging Timepoints (FIT) in ADPKD

Zhongxiu Hu1, Arman Sharbatdaran1, Xinzi He1, Chenglin Zhu1, Hreedi Dev1, Jon D Blumenfeld2, and Martin R Prince1,3
1Radiology, Weill Cornell Medicine, New York, NY, United States, 2The Rogosin Institute, New York, NY, United States, 3Columbia University Irving Medical Center, New York, NY, United States

Synopsis

Keywords: Kidney, Genetic Diseases, ADPKD

Motivation: Height-adjusted total kidney volume (htTKV) growth rate measured on MRI or CT is a critical biomarker for monitoring autosomal dominant polycystic kidney disease (ADPKD) progression.

Goal(s): This study aims to develop a tool for accurate calculation of the htTKV growth rate based on all available MRI scans.

Approach: Accuracy of four MRI methods for calculating htTKV growth rate were assessed as compared to ground truth calculated from 10+ years of imaging follow up.

Results: Using 2-parameter least squares fitting with 3+ scans or 5+ years of follow up reduce error 2-fold compared to the current clinical standard, Mayo Imaging Classification.

Impact: Accurate estimation of kidney growth rate on abdominal MRI using FIT will enable better prediction of disease progression and response to therapy in patients with ADPKD.

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