Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Jul 2014
Randomized Controlled TrialFully automated tool to identify the aorta and compute flow using phase-contrast MRI: validation and application in a large population based study.
To assess if fully automated localization of the aorta can be achieved using phase contrast (PC) MR images. ⋯ A robust fully automated tool to localize the aorta and provide flow volume measurements on phase contrast MRI was validated on a large population-based study.
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J Magn Reson Imaging · Jul 2014
Comparative StudyAbdominal MRI at 3.0 T: LAVA-Flex compared with conventional fat suppression T1-weighted images.
To study liver imaging with volume acceleration-flexible (LAVA-Flex) for abdominal magnetic resonance imaging (MRI) at 3.0 T and compare the image quality of abdominal organs between LAVA-Flex and fast spoiled gradient-recalled (FSPGR) T1-weighted imaging. ⋯ The LAVA-Flex sequence offers superior and more homogenous fat suppression of the abdomen than does the FSPGR sequence. The fat-only phase can be a simple and effective method of assessing fatty liver.
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J Magn Reson Imaging · Jul 2014
Clinical performance of contrast enhanced abdominal pediatric MRI with fast combined parallel imaging compressed sensing reconstruction.
To deploy clinically, a combined parallel imaging compressed sensing method with coil compression that achieves a rapid image reconstruction, and assess its clinical performance in contrast-enhanced abdominal pediatric MRI. ⋯ A fast combined parallel imaging compressed sensing method is feasible in a pediatric clinical setting. Preliminary results suggest it may improve structural delineation over parallel imaging.
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J Magn Reson Imaging · Jul 2014
T₁ mapping using variable flip angle SPGR data with flip angle correction.
To improve the calculation of T1 relaxation time from a set of variable flip-angle (FA) spoiled gradient recalled echo images. ⋯ The proposed method overcomes some inaccuracies in FA production, providing more accurate estimation of T1 values compared with standard methods, and is applicable for currently available data.
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To evaluate a novel real-time phase-contrast magnetic resonance imaging (MRI) technique for the assessment of through-plane flow in the ascending aorta. ⋯ Real-time phase-contrast MRI of blood flow in the human aorta yields functional parameters for individual heartbeats. When averaged across heartbeats real-time flow velocities and stroke volumes are comparable to values obtained by conventional cine MRI.