Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Oct 2011
Comparative StudyNovel segmentation method for abdominal fat quantification by MRI.
To introduce and describe the feasibility of a novel method for abdominal fat segmentation on both water-saturated and non-water-saturated MR images with improved absolute fat tissue quantification. ⋯ The proposed method using a novel fuzzy c-means clustering method followed by thresholding can achieve consistent quantitative results on both WS and NWS abdominal MR images while accounting for PVE contributing inaccuracies.
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J Magn Reson Imaging · Oct 2011
Comparative StudyThe application of three-dimensional diffusion-weighted PSIF technique in peripheral nerve imaging of the distal extremities.
To evaluate whether the addition of the three-dimensional diffusion-weighted reversed fast imaging with steady state free precession (3D DW-PSIF) sequence improves the identification of peripheral nerves in the distal extremities. ⋯ The 3D DW-PSIF images provide improved identification of the nerves compared with the T2-weighted images, and should be incorporated in the MRN protocol, whenever accurate nerve localization and/or presurgical evaluation are required.
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J Magn Reson Imaging · Oct 2011
Comparative StudyAutomatic abdominal fat assessment in obese mice using a segmental shape model.
To develop a computerized image analysis method to assess the quantity and distribution of abdominal fat tissues in an obese (ob/ob) mouse model relevant to 7 T magnetic resonance imaging (MRI). ⋯ The automated results correlate well with manual segmentations and the method can be used to increase laboratory automation.
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J Magn Reson Imaging · Oct 2011
T1-weighted 3D dynamic contrast-enhanced MRI of the breast using a dual-echo Dixon technique at 3 T.
To evaluate a single-pass fast spoiled gradient echo (FSPGR) two-point Dixon sequence and a gradient echo sequence with spectral fat suppression in their performance at 3 T for fat suppressed contrast-enhanced bilateral breast imaging. ⋯ Our findings suggest that the Dixon technique is an effective fat suppression method for contrast-enhanced breast MRI. The Dixon technique also seemed to provide better anatomical definition of posterior structures and improvement in severity of artifacts.