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Abstract #0727

Utilizing hyperpolarized MRI in prostate cancer to assess metabolic dynamics and histopathologic grade

Kristin L Granlund1,2, Hebert A Vargas1, Serge K Lyashchenko3, Phillip J DeNoble3, Vincent Laudone4, James A Eastham4, Ramon A Sosa1, Matthew Kennedy1, Duane Nicholson1, YanWei W Guo1, Albert Chen5, James Tropp6, Hedvig Hricak1,2, and Kayvan R Keshari1,2

1Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, United States, 2Molecular Pharmacology, Memorial Sloan Kettering Cancer Center, New York, NY, United States, 3Radiochemistry & Imaging Probes (RMIP) Core, Memorial Sloan Kettering Cancer Center, New York, NY, United States, 4Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, United States, 5GE Healthcare, Toronto, ON, 6Berkshire Magnetics, Berkeley, CA

A hallmark of prostate cancer is the reprogramming of prostate cancer metabolism which has been exploited for both 31P and 1H MRSI. In recent work, we and others have shown that hyperpolarized substrates can be used in living systems to measure changes in metabolic dynamics. Many studies have focused on the use of HP pyruvate in preclinical models, though the characterization of prostate cancer in man using HP MRI has been limited. In this work, we demonstrate the use of HP pyruvate MRI in prostate cancer patients. We assess the metabolic dynamics to the prostate of pyruvate as well as its conversion to lactate. Moreover we extend this analysis to the comparison of HP lactate to prostate cancer grade showing that not only does this approach have the potential to measure differences in grade it also can provide reproducible metabolic signatures across patients.

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