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Abstract #0147

In Vivo Monitoring of Renal Tubule Volume Fraction During Acute Tubular Pressure Increase Using Dynamic T2 Mapping

Ehsan Tasbihi1,2, Thomas Gladytz1, Jason M. Millward1, Joāo Periquito1, Ludger Starke1,3, Sonia Waiczies1, Kathleen Cantow4, Erdmann Seeliger4, and Thoralf Niendorf1
1Berlin Ultrahigh Field Facility (B.U.F.F.), Max Delbrueck Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany, 2Charité – Universitätsmedizin, Berlin, Germany, 3Hasso Plattner Institute for Digital Engineering, University of Potsdam, Germany, Potsdam, Germany, 4Experimental and Clinical Research Center, a joint cooperation between the Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine, Berlin, Germany

Synopsis

Keywords: Quantitative Imaging, Kidney, tubule volume fraction, MRI, T2 mapping, multi-exponential analysis

Motivation: The increasing incidence of kidney diseases is a global concern and current biomarkers are inadequate. Changes in renal tubule volume fraction (TVF) may serve as a rapid biomarker for kidney disease and provide a better understanding of renal (patho-)physiology.

Goal(s): This study aims to measure TVF in in vivo rat kidney during acute tubular pressure increase.

Approach: This study uses the amplitude of the long T2-component as a surrogate for TVF in rats, by applying multiexponential analysis of the T2-driven signal decay.

Results: The results demonstrate that our approach is promising for research into quantitative assessment of renal TVF in in vivo applications.

Impact: This is the first report on in vivo assessment of relative changes in the renal TVF, which provides a potential rapid, noninvasive marker for kidney disease. This approach will be invaluable for gaining a better mechanistic understanding of renal (patho-)physiology.

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Keywords