Keywords: Quantitative Imaging, Acquisition Methods, Abdomen, quantitative imaging, relaxometry, MRI
Motivation: Quantitative abdominal mapping typically requires multiple scans across multiple breath-holds, with each scan providing limited anatomic coverage.
Goal(s): To evaluate the effectiveness of a rapid free-breathing whole-abdomen multiple-inversion spin-and-gradient-echo (MI-SAGE) scan for simultaneous T1, T2, and T2* mapping of various abdominal organs.
Approach: In 19 participants with and without liver disease, T1, T2, and T2* values obtained using MI-SAGE were compared to conventional mapping techniques and published values for various abdominal organs.
Results: T1, T2, and T2* estimates from MI-SAGE for multiple abdominal organs were consistent with literature, and liver and muscle values agreed with values obtained from conventional techniques.
Impact: This study demonstrates that a single one-minute, free-breathing MI-SAGE scan can achieve T1, T2, and T2* estimates across abdominal organs, comparable to published values and consistent with liver and muscle values from conventional mapping techniques from multiple breath-hold scans.
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