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Abstract #3375

Endogenous Urea CEST (urCEST) for MRI monitoring of kidney function

Elena Vinogradov 1,2 , Zheng Liu 3 , Ananth Madhuranthakam 1,2 , Asghar Hajibeigi 1 , Adrien Jump 4 , Ivan Pedrosa 1,2 , Orson W Moe 4 , and Robert E Lenkinski 1,2

1 Radiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States, 2 Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas, United States, 3 Advanced Imaging Research Center,Oregon National Primate Research Center, Oregon Health & Science University, Portland, Oregon, United States, 4 Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, United States

Kidney ailments affect millions of people. Many of these diseases alter normal pH and urea distribution in tissue, prior to apparent morphological changes in the kidney or biochemical changes in blood and urine. Imaging is a powerful tool to assess regional alternations. Here we investigate the application of CEST to monitor kidney function using endogenous urea (urCEST). We present images from healthy volunteers acquired at 3T as well as urCEST modulation following a simple intervention. UrCEST may become a powerful asset in the non-invasive evaluation of kidney function and disease. Moreover, application of quantification methods may lead to pH and urea concentration maps in-vivo.

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