Feasibility of pseudocontinuous arterial spin labeling at 7 T with whole-brain coverage
نویسندگان
چکیده
منابع مشابه
Superselective pseudocontinuous arterial spin labeling.
A new technique for the imaging of flow territories of individual extra- and intracranial arteries is presented. The method is based on balanced pseudocontinuous arterial spin labeling but employs additional time-varying gradients in between the radiofrequency pulses of the long labeling train. The direction of the additional gradient vector is perpendicular to the selected artery and its azimu...
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A new signal-to-noise ratio (SNR) efficient method is introduced for the mapping of vascular territories based on pseudocontinuous arterial spin labeling (ASL). A pseudocontinuous tagging pulse train is modified using additional transverse gradient pulses and phase cycling to place some arteries in a tag condition, while others passing through the same tagging plane are in a control condition. ...
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We have examined sensitivity and specificity of pseudocontinuous arterial spin labeling (PCASL) to detect global and regional changes in cerebral blood flow (CBF) in response to two different psychoactive drugs. We tested alcohol and morphine in a placebo-controlled, double-blind randomized study in 12 healthy young men. Drugs were administered intravenously. Validated pharmacokinetic protocols...
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BACKGROUND AND PURPOSE Previous studies showed conflicting results concerning the value of CBF maps obtained from arterial spin-labeling MR imaging in grading gliomas. This study was performed to investigate the effectiveness of CBF maps derived from 3D pseudocontinuous arterial spin-labeling in preoperatively assessing the grade, cellular proliferation, and prognosis of gliomas. MATERIALS AN...
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Material and Methods: The protocol consisted of a FAIR preparation containing a time resampled FOCI (TR-FOCI) pulse followed by a 2D GRE-EPI readout with minimized temporal spacing between the acquisitions of the different slices. The TR-FOCI was optimized using a genetic algorithm described by Hurley et al. but with modified constraints to benefit from the capabilities of our scanner. A single...
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ژورنال
عنوان ژورنال: Magnetic Resonance Materials in Physics, Biology and Medicine
سال: 2011
ISSN: 0968-5243,1352-8661
DOI: 10.1007/s10334-011-0297-0