Key result
T1-weighted fast Dixon sequence most accurately estimates fat volumes, while all MR techniques assess ratios similarly.
Why the study?
No investigation has been performed to determine the accuracy of different MR sequences in estimating the ratio of intraabdominal to subcutaneous adipose tissue.
Do fast Dixon and 3D spoiled gradient-echo MR sequences improve the accuracy of estimating adipose tissue distribution compared to conventional T1-weighted spin-echo imaging in a phantom model?
Population
Adiposity phantom simulating subcutaneous and intraabdominal fat with known volumes
Comparison
T1-weighted fast Dixon and 3D spoiled gradient-echo sequences vs conventional T1-weighted spin-echo sequence
Design
Phantom imaging study with repeated segmentations and ANOVA comparison
Authors
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Phantom validation favors fast Dixon for fat volumetry; leaves open translation to clinical visceral adiposity assessment.
Do fast Dixon and 3D spoiled gradient-echo MR sequences improve the accuracy of estimating adipose tissue distribution compared to conventional T1-weighted spin-echo imaging in a phantom model?
p-value: p=0.9117
In a phantom model, the T1-weighted fast Dixon sequence was more accurate than conventional spin-echo imaging for estimating fat volumes, suggesting it may be a superior technique for measuring visceral adiposity.
Donnelly et al. (2003) studied Adipose tissue distribution. T1-weighted fast Dixon and 3D spoiled gradient-echo MR sequences vs. Conventional T1-weighted spin-echo MR imaging was evaluated on Ratio of intraabdominal to subcutaneous adipose tissue (p=0.9117). The T1-weighted fast Dixon sequence was the most accurate at estimating fat volumes, while all MR techniques performed similarly in estimating the ratio of intraabdominal to subcutaneous adipose tissue (p=0.9117).
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