Abstract #0146
Same Day 1.5T vs 3T Reproducibility of Liver Proton Density Fat Fractions in Obese Patients
Nathan Artz 1 , William Haufe 2 , Tanya Chavez 2 , Gavin Hamilton 2 , Michael Middleton 2 , Jeff Schwimmer 3 , Diego Hernando 1 , Ann Shimakawa 4 , Jonathan Hooker 2 , Claude Sirlin 2 , and Scott Reeder 1,5
1
Radiology, University of Wisconsin, Madison,
WI, United States,
2
Radiology,
University of California, San Diego, CA, United States,
3
Pediatrics,
University of California, San Diego, CA, United States,
4
Global
Applied Science Laboratory, GE Healthcare, Menlo Park,
CA, United States,
5
Medicine,
University of Wisconsin, Madison, WI, United States
The purpose of this work is to examine the 1.5T vs 3T
reproducibility of hepatic proton density fat fraction (PDFF)
measurements. Obese patients were scanned using three
distinct quantitative MR techniques on the same day at
both field strengths. Regression analysis was used to
compare co-localized 1.5T and 3T PDFF measurements. All
three techniques demonstrated very good agreement
between 1.5T and 3T liver PDFF measurements, indicating
that PDFF quantification is reproducible across field
strengths.
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