Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Oct 2017
Comparative StudyQuantification of neonatal lung parenchymal density via ultrashort echo time MRI with comparison to CT.
To demonstrate that ultrashort echo time (UTE) magnetic resonance imaging (MRI) can achieve computed tomography (CT)-like quantification of lung parenchyma in free-breathing, non-sedated neonates. Because infant CTs are used sparingly, parenchymal disease evaluation via UTE MRI has potential for translational impact. ⋯ 3 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2017;46:992-1000.
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J Magn Reson Imaging · Oct 2017
Comparative StudySimultaneous noncontrast angiography and intraplaque hemorrhage (SNAP) imaging: Comparison with contrast-enhanced MR angiography for measuring carotid stenosis.
To evaluate in a proof-of-concept study the feasibility of Simultaneous Noncontrast Angiography and intraPlaque hemorrhage (SNAP) imaging as a clinical magnetic resonance angiography (MRA) technique for measuring carotid stenosis. There is a growing interest in detecting intraplaque hemorrhage (IPH) during the clinical management of carotid disease, yet luminal stenosis has remained indispensable during clinical decision-making. SNAP imaging has been proposed as a novel IPH imaging technique that provides carotid MRA with no added scan time. Flowing blood shows negative signal on SNAP because of phase-sensitive inversion recovery. ⋯ 2 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2017;46:1045-1052.
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J Magn Reson Imaging · Oct 2017
Preoperative MRI features associated with lymphovascular invasion in node-negative invasive breast cancer: A propensity-matched analysis.
In node-negative disease, the presence of lymphovascular invasion (LVI) is reported to be an unfavorable prognostic factor. Thus, the aim of this study was to evaluate whether preoperative breast MRI features are associated with LVI in patients with node-negative invasive breast cancer by a propensity-matched analysis. ⋯ 3 Technical Efficacy: Stage 3 J. Magn. Reson. Imaging 2017;46:1037-1044.
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J Magn Reson Imaging · Oct 2017
Apparent diffusion coefficient values may help predict which MRI-detected high-risk breast lesions will upgrade at surgical excision.
To investigate whether diffusion-weighted imaging (DWI) features could assist in determining which high-risk lesions identified on dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) and diagnosed on core needle biopsy (CNB) will upgrade to malignancy on surgical excision. ⋯ 2 Technical Efficacy: Stage 3 J. Magn. Reson. Imaging 2017;46:1028-1036.
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J Magn Reson Imaging · Oct 2017
Vessel wall and adventitial DCE-MRI parameters demonstrate similar correlations with carotid plaque microvasculature on histology.
To assess parameter agreement of volume transfer coefficient (Ktrans ) between two vascular regions and to study the correlation with microvessel density on histology. The dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) parameter Ktrans is frequently used to study atherosclerotic plaque microvasculature. Ktrans has been reported using different descriptive statistics (mean, median, 75th percentile) either for the whole vessel wall or the adventitia in previous studies. ⋯ 2 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2017;46:1053-1059.