Characterizing a short T₂ * signal component in the liver using ultrashort TE chemical shift-encoded MRI at 1.5T and 3.0T.

ABSTRACT: PURPOSE:Recent studies have suggested the presence of short-T₂ * signals in the liver, which may confound chemical shift-encoded (CSE) fat quantification when using short echo times (TEs). The purpose of this study was to characterize the liver signal at short echo times and to determine its impact on liver fat quantification. METHODS:An ultrashort echo time (UTE) chemical shift-encoded MRI (CSE-MRI) technique and a multicomponent reconstruction were developed to characterize short-T₂ * liver signals. Subsequently, liver fat fraction was quantified using a short-TE (first TE = 0.7 ms) and UTE CSE-MRI acquisitions and compared with a standard CSE-MRI (first TE = 1.2 ms). RESULTS:Short-T₂ * signals were consistently observed in the liver of all healthy volunt

SUBMITTER: Zhu A 

PROVIDER: S-EPMC6717026 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature