Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · May 2018
Pulmonary ventilation imaging in asthma and cystic fibrosis using oxygen-enhanced 3D radial ultrashort echo time MRI.
A previous study demonstrated the feasibility of using 3D radial ultrashort echo time (UTE) oxygen-enhanced MRI (UTE OE-MRI) for functional imaging of healthy human lungs. The repeatability of quantitative measures from UTE OE-MRI needs to be established prior to its application in clinical research. ⋯ 2 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2018;47:1287-1297.
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J Magn Reson Imaging · May 2018
Five-minute knee MRI for simultaneous morphometry and T2 relaxometry of cartilage and meniscus and for semiquantitative radiological assessment using double-echo in steady-state at 3T.
Biomarkers for assessing osteoarthritis activity necessitate multiple MRI sequences with long acquisition times. ⋯ 2 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2018;47:1328-1341.
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J Magn Reson Imaging · May 2018
Support vector machine for breast cancer classification using diffusion-weighted MRI histogram features: Preliminary study.
Diffusion-weighted MRI (DWI) is currently one of the fastest developing MRI-based techniques in oncology. Histogram properties from model fitting of DWI are useful features for differentiation of lesions, and classification can potentially be improved by machine learning. ⋯ 3 Technical Efficacy: Stage 3 J. Magn. Reson. Imaging 2018;47:1205-1216.
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J Magn Reson Imaging · May 2018
Magnetic resonance elastography is as accurate as liver biopsy for liver fibrosis staging.
Liver MR elastography (MRE) is available for the noninvasive assessment of liver fibrosis; however, no previous studies have compared the diagnostic ability of MRE with that of liver biopsy. ⋯ 3. Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2018;47:1268-1275.
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J Magn Reson Imaging · May 2018
Variable angle gray level co-occurrence matrix analysis of T2 relaxation time maps reveals degenerative changes of cartilage in knee osteoarthritis: Oulu knee osteoarthritis study.
Texture analysis methods based on gray level co-occurrence matrices (GLCM) can be optimized to probe the spatial correspondence information from knee MRI T2 maps and the changes caused by osteoarthritis, and thus possibly leading to a more sensitive characterization of osteoarthritic cartilage. Curvature of the cartilage surfaces combined with the low image resolution in relation to cartilage thickness set special requirements for an effective texture analysis tool. ⋯ 2 Technical Efficacy Stage 2 J. Magn. Reson. Imaging 2018;47:1316-1327.