Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Jul 2009
Automatic glioma characterization from dynamic susceptibility contrast imaging: brain tumor segmentation using knowledge-based fuzzy clustering.
To assess whether glioma volumes from knowledge-based fuzzy c-means (FCM) clustering of multiple MR image classes can provide similar diagnostic efficacy values as manually defined tumor volumes when characterizing gliomas from dynamic susceptibility contrast (DSC) imaging. ⋯ Our results suggest that knowledge-based FCM clustering of multiple MR image classes provides a completely automatic, user-independent approach to selecting the target region for presurgical glioma characterization.
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J Magn Reson Imaging · Jul 2009
Automated assessment of whole-body adipose tissue depots from continuously moving bed MRI: a feasibility study.
To present an automated algorithm for segmentation of visceral, subcutaneous, and total volumes of adipose tissue depots (VAT, SAT, TAT) from whole-body MRI data sets and to investigate the VAT segmentation accuracy and the reproducibility of all depot assessments. ⋯ Automated and manual VAT results correlated strongly. The assessments of all depots were highly reproducible. The acquisition and postprocessing techniques presented are likely useful in obesity related studies.
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J Magn Reson Imaging · Jul 2009
Pilot study of improved lesion characterization in breast MRI using a 3D radial balanced SSFP technique with isotropic resolution and efficient fat-water separation.
To assess a 3D radial balanced steady-state free precession (SSFP) technique that provides submillimeter isotropic resolution and inherently registered fat and water image volumes in comparison to conventional T2-weighted RARE imaging for lesion characterization in breast magnetic resonance imaging (MRI). ⋯ 3DPR-SSFP has the potential to improve the lesion characterization information available in breast MRI, particularly in comparison to conventional FSE. A larger study is warranted to quantify the effect of 3DPR-SSFP on specificity.
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J Magn Reson Imaging · Jul 2009
Cine cardiac imaging using black-blood steady-state free precession (BB-SSFP) at 3T.
To propose a new black-blood (BB) pulse sequence that provides BB cine cardiac images with high blood-myocardium contrast. The proposed technique is based on the conventional steady-state free precession (SSFP) sequence. ⋯ Based on an SSFP conventional sequence, the new sequence provides BB cines that cover most of the cardiac cycle and with higher SNR and CNR than the conventional BB sequences.
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J Magn Reson Imaging · Jul 2009
Reproducibility of dGEMRIC in assessment of hip joint cartilage: a prospective study.
To investigate the reproducibility of dGEMRIC in the assessment of cartilage health of the adult asymptomatic hip joint. ⋯ We found dGEMRIC to be a reliable tool in the assessment of cartilage health status in adult hip joints.