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Abstract #4096

Hyperpolarized 13C Metabolic Imaging of the Human Abdomen with Spatiotemporal Denoising

Tanner M. Nickles1,2, Yaewon Kim 1, Philip M. Lee1, Hsin-Yu Chen1, Michael Ohliger1, Peder E. Z. Larson1,2, Zhen J Wang1, Daniel B. Vigneron 1,2, and Jermey W. Gordon1
1Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States, 2UC Berkeley-UCSF Bioengineering Program, University of California San Francisco, San Francisco, CA, United States

Synopsis

Keywords: Data Processing, Hyperpolarized MR (Non-Gas), Pancreas, Abdomen, CancerA substantial challenge in hyperpolarized (HP) 13C MRI is the limited signal-to-noise ratio (SNR) of downstream metabolites, which restricts the achievable spatial resolution. To overcome this for large coverage abdominal studies, a patch-based spatiotemporal denoising approach was applied to denoise dynamic imaging data in [1-13C]pyruvate echo-planar imaging (EPI) human datasets. With denoising, a 11.4 ± 1.8 and 8.7 ± 2.4 fold sensitivity gain was achieved for [1-13C]alanine and [1-13C]lactate, along with improved spatial coverage. These results support the potential of spatiotemporal denoising to improve quantification in HP 13C MRI for normal and cancer studies.

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Keywords