Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · Nov 2002
Multiplanar MR temperature-sensitive imaging of cerebral thermal treatment using interstitial ultrasound applicators in a canine model.
To study the feasibility of an interleaved gradient-echo, echo-planar imaging (iGE-EPI) sequence for multiplanar magnetic resonance temperature imaging (MRTI) to monitor intracerebral thermal treatment three-dimensionally using multielement ultrasound applicators. ⋯ Multiplanar MRTI is feasible for measuring necrosing thermal doses during intracerebral thermal delivery by interstitial ultrasound applicators.
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To examine functional magnetic resonance imaging (fMRI) of the rat cervical spinal cord using painful stimulation. ⋯ Spinal fMRI using electrical stimulation and capsaicin-induced painful stimulation can be a useful tool in an animal model of pain and injury.
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J Magn Reson Imaging · Sep 2002
Analysis of the spatial characteristics of metabolic abnormalities in newly diagnosed glioma patients.
To evaluate the role of 3D MR spectroscopic imaging (MRSI) as a tool for characterizing heterogeneity within a lesion in glioma patients. ⋯ These 3D-MRSI data provide important additional information to conventional MRI for evaluating and characterizing gliomas.
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J Magn Reson Imaging · Sep 2002
Hybrid phased array for improved internal auditory canal imaging at 3.0-T MR.
To develop and evaluate a hybrid phased array for internal auditory canal (IAC) imaging at 3.0 T. ⋯ This hybrid array combined with three-dimensional fast spin-echo (FSE) acquisition resulted in improved high spatial resolution IAC imaging.
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J Magn Reson Imaging · Sep 2002
Dynamic coronary MR angiography and first-pass perfusion with intracoronary administration of contrast agent.
To evaluate whether dynamic imaging of the coronary arteries can be performed with intracoronary infusion of low-dose gadolinium (Gd)-based contrast agent and assess the effect of long duration and multiple infusions on the image signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). ⋯ These studies demonstrated that, using intracoronary infusion of Gd, coronary magnetic resonance angiography (MRA) can be performed with high temporal resolution, and multiple low-dose slow infusions of Gd-based MR contrast agent can be performed without compromise of the vessel SNR and CNR.