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Abstract #3861

Temperature-Corrected Proton Density Fat Fraction Estimation using Magnitude, Complex, and Hybrid Chemical Shift-Encoded MRI in Phantoms

Ruvini Navaratna1,2, Ruiyang Zhao1,2, Timothy J Colgan2, Houchun Harry Hu3, Mark Bydder4, Takeshi Yokoo5, Mustafa R Bashir6,7,8, Michael S Middleton9, Suraj D Serai10, Dariya Malyarenko11, Thomas Chenevert11, Mark Smith3, Walter Henderson9, Gavin Hamilton9, Yunhong Shu12, Claude B Sirlin9, Jean Tkach13, Andrew T Trout13,14, Jean H Brittain15, Diego Hernando1,2, and Scott B Reeder1,2,16,17,18
1Medical Physics, University of Wisconsin - Madison, Madison, WI, United States, 2Radiology, University of Wisconsin - Madison, Madison, WI, United States, 3Radiology, Nationwide Children's Hospital, Columbus, OH, United States, 4Radiological Sciences, University of California - Los Angeles, Los Angeles, CA, United States, 5Radiology, University of Texas - Southwestern Medical Center, Dallas, TX, United States, 6Radiology, Duke University Medical Center, Durham, NC, United States, 7Division of Hepatology, Duke University Medical Center, Durham, NC, United States, 8Center for Advanced Magnetic Resonance Development, Duke University Medical Center, Durham, NC, United States, 9Radiology, University of California - San Diego, San Diego, CA, United States, 10Radiology, Children's Hospital of Philadelphia, Philadelphia, PA, United States, 11Radiology, University of Michigan, Ann Arbor, MI, United States, 12Radiology, Mayo Clinic, Rochester, MN, United States, 13Radiology, Cincinnati Children's Hospital and Medical Center, Cincinnati, OH, United States, 14Radiology, University of Cincinnati College of Medicine, Cincinnati, OH, United States, 15Calimetrix, LLC, Madison, WI, United States, 16Biomedical Engineering, University of Wisconsin - Madison, Madison, WI, United States, 17Medicine, University of Wisconsin - Madison, Madison, WI, United States, 18Emergency Medicine, University of Wisconsin - Madison, Madison, WI, United States

Chemical shift-encoded (CSE) MRI is a well-established technique to quantify proton density fat-fraction (PDFF) as a quantitative imaging biomarker of hepatic steatosis. However, temperature is known to affect the accuracy and precision of PDFF quantification in phantoms. Previous work has demonstrated the benefit of temperature-correction using magnitude-based CSE-MRI PDFF estimation. However, the effect of temperature correction on complex- and hybrid-based CSE-MRI PDFF estimation is unknown. In this study­­­, we aim to compare the effects of PDFF temperature-correction for magnitude-based, complex-based, and hybrid-based CSE-MRI using simulations, temperature-controlled phantom experiments, and a multi-center phantom study.

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