Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Apr 2007
Comparative StudyAge dependence of cerebral perfusion assessed by magnetic resonance continuous arterial spin labeling.
To study the normal dependence of cerebral perfusion changes on age, to measure values of perfusion early in life, and to create a reference dataset. ⋯ ASL is a practical and quantitative technique suitable for perfusion measurement in children as well as adults. Perfusion measurements with ASL appear sensitive to neurophysiological changes occurring during brain maturation.
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J Magn Reson Imaging · Apr 2007
Comparative StudyDiffusion-weighted MRI (DWI) in the oncology patient: value of breathhold DWI compared to unenhanced and gadolinium-enhanced MRI.
To evaluate the feasibility and added value of single breathhold diffusion-weighted (DW) imaging (DWI) in oncology patients undergoing abdominal MRI. ⋯ DWI is feasible in a single breathhold and provides additional clinically important information in oncology patients when added to routine abdominal MR sequences.
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J Magn Reson Imaging · Apr 2007
Comparative StudyFour-dimensional single breathhold magnetic resonance imaging using kt-BLAST enables reliable assessment of left- and right-ventricular volumes and mass.
To prospectively determine the accuracy of four-dimensional (4D) kt-broad-use linear acquisition speed-up technique (BLAST) accelerated MRI (kt-BLAST) for the assessment of left-ventricular (LV) volumes and mass as well as right-ventricular (RV) volumes in comparison to standard multiple breathhold cine imaging. ⋯ 4D kt-BLAST-accelerated MRI enabled the accurate assessment of LV and RV quantitative parameters during one single breathhold when compared to standard multislice, multiple breathhold SSFP imaging.
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J Magn Reson Imaging · Apr 2007
3D excretory MR urography: improved image quality with intravenous saline and diuretic administration.
To assess the effect of diuretic administration on the image quality of excretory magnetic resonance urography (MRU) obtained following intravenous hydration, and to determine whether intravenous hydration alone is sufficient to produce diagnostic quality studies of nondilated upper tracts. ⋯ Intravenous furosemide significantly improves the image quality of excretory MRU studies obtained following intravenous hydration. Intravenous saline alone is insufficient to produce diagnostic quality studies of the non-dilated upper tracts.
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J Magn Reson Imaging · Apr 2007
Time-resolved 3D MR velocity mapping at 3T: improved navigator-gated assessment of vascular anatomy and blood flow.
To evaluate an improved image acquisition and data-processing strategy for assessing aortic vascular geometry and 3D blood flow at 3T. ⋯ Navigator-gated time-resolved 3D MR velocity mapping at 3T in combination with advanced data processing is a powerful tool for performing detailed assessments of global and local blood-flow characteristics in the aorta to describe or exclude vascular alterations.