Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Nov 2019
Age-related deep white matter changes in myelin and water content: A T2 relaxometry study.
According to the retrogenesis hypothesis, the rate of age-related changes in white matter (WM) myelin content varies between early myelinating (parietal, occipital) and late myelinating (prefrontal, lateral-posterior temporal) areas. The multiecho spin echo (MESE), PD-to-T2 -weighted sequence provides an index of myelin content (myelin water fraction [MWF]) derived from measurements of myelin water (via the short T2 component [10-50 msec]) and intra- and extracellular water (via the long T2 component [>50-200 msec]). ⋯ 2 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;50:1393-1404.
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J Magn Reson Imaging · Nov 2019
Pancreas deformation in the presence of tumors using feature tracking from free-breathing XD-GRASP MRI.
Quantifying the biomechanical properties of pancreatic tumors could potentially help with assessment of tumor aggressiveness, prognosis, and prediction of therapy response. ⋯ 4 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;50:1633-1640.
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J Magn Reson Imaging · Oct 2019
Pilot study on longitudinal change in pancreatic proton density fat fraction during a weight-loss surgery program in adults with obesity.
Quantitative-chemical-shift-encoded (CSE)-MRI methods have been applied to the liver. The feasibility and potential utility CSE-MRI in monitoring changes in pancreatic proton density fat fraction (PDFF) have not yet been demonstrated. ⋯ 2 Technical Efficacy Stage: 1 J. Magn. Reson. Imaging 2019;50:1092-1102.
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J Magn Reson Imaging · Oct 2019
Multicenter StudyAutomated image quality evaluation of structural brain MRI using an ensemble of deep learning networks.
Deep learning (DL) is a promising methodology for automatic detection of abnormalities in brain MRI. ⋯ 3 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;50:1260-1267.
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J Magn Reson Imaging · Oct 2019
Comparative StudyDifferentiating axillary lymph node metastasis in invasive breast cancer patients: A comparison of radiomic signatures from multiparametric breast MR sequences.
The axillary lymph node status is critical for breast cancer staging and individualized treatment planning. ⋯ Breast tumor's radiomic signatures from preoperative breast MRI sequences are associated with the ALN metastasis status, where CE2 phase and the contrast enhancement kinetic features lead to the highest classification effect. Level of Evidence 3 Technical Efficacy Stage 2 J. Magn. Reson. Imaging 2019;50:1125-1132.