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Stack-of-radial multiecho gradient-echo MRI is promising for free-breathing liverTo validate stack-of-radial MRI with self-gating motion compensation in phantoms, and to evaluate it in children.Prospective.Four vials with differentSixteen pediatric patients with suspected nonalcoholic fatty liver disease or steatohepatitis (five females, 13 ± 4 years, body mass index 29.2 ± 8.6 kg/mStack-of-radial, and 2D and 3D Cartesian multiecho gradient-echo sequences at 3T.Ungated and gated stack-of-radial proton density fat fraction (PDFF) andPhantom results were fitted with a weighted linear model. Demographic differences between excluded and included subjects were tested by multivariate analysis of variance. PDFF andUngated stack-of-radialStack-of-radial MRI with self-gating motion compensation seems to allow free-breathing liver2 TECHNICAL EFFICACY STAGE: 2.

To develop an accurate free-breathing 3D liverA free-breathing multi-echo stack-of-radial sequence was applied in 5 normal subjects and 6 patients at 3 Tesla. Respiratory motion compensation was implemented using the inherent self-gating signal. A breath-hold Cartesian acquisition was the reference standard. Proton density fat fraction andFree-breathing stack-of-radial without self-gating exhibited signal attenuation in echo images and artifactually elevated apparentThe proposed self-gating method corrects the respiratory motion bias and enables accurate free-breathing stack-of-radial quantification of liver