Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Nov 2005
Clinical TrialWash-in rate on the basis of dynamic contrast-enhanced MRI: usefulness for prostate cancer detection and localization.
To evaluate the usefulness of the wash-in rate based on dynamic contrast-enhanced (DCE) MRI for the detection and localization of prostate cancer. ⋯ The wash-in rate based on DCE-MRI is a useful parameter for prostate cancer detection and localization.
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J Magn Reson Imaging · Nov 2005
Comparative Study Controlled Clinical TrialComparison of gated and non-gated fast multislice black-blood carotid imaging using rapid extended coverage and inflow/outflow saturation techniques.
To comparatively analyze two fast in vivo multislice black-blood carotid artery vessel wall imaging techniques with and without cardiac gating. ⋯ Non-gated sequences may be used instead of gated sequences in atherosclerotic vessel wall imaging without compromising image quality. This may shorten examination time and improve patient comfort.
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J Magn Reson Imaging · Nov 2005
Multicenter Study Controlled Clinical TrialTexture analysis for tissue discrimination on T1-weighted MR images of the knee joint in a multicenter study: Transferability of texture features and comparison of feature selection methods and classifiers.
To investigate the reproducibility and transferability of texture features between MR centers, and to compare two feature selection methods and two classifiers. ⋯ The differences in texture features extracted from MR images from different centers seem to have only a small impact on the results of tissue discrimination.
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J Magn Reson Imaging · Nov 2005
Comparative Study Controlled Clinical TrialComparison of contrast agents with high molarity and with weak protein binding in cerebral perfusion imaging at 3 T.
To examine and compare properties of high-molarity contrast agent gadobutrol (Gadovist) and weakly protein-binding agent gadobenate-dimeglumine (MultiHance in dynamic susceptibility contrast (DSC) perfusion imaging at 3 T. ⋯ At 3 T, a gadobutrol or gadobenate-dimeglumine dose of 0.1 mmol/kg is sufficient for DSC magnetic resonance imaging (MRI) perfusion assessment. At the used small injection volumes, the tissue concentration curve was determined only by the gadolinium (Gd) dosage in mmol/kg, and the T2* relaxation effects of the two agents can be considered to be nearly identical in the applied gradient-echo (GRE) sequence.
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J Magn Reson Imaging · Nov 2005
Clinical TrialQuantifying the effect of posture on intracranial physiology in humans by MRI flow studies.
To quantify the effect of posture on intracranial physiology in humans by MRI, and demonstrate the relationship between intracranial compliance (ICC) and pressure (ICP), and the pulsatility of blood and CSF flows. ⋯ The effect of posture on intracranial physiology can be quantified by MRI because posture-related changes in ICC and ICP strongly affect the dynamics of cerebral blood and CSF flows. This study provides important insight into the coupling that exists between arterial, venous, and CSF flow dynamics, and how it is affected by posture.