Cerebral blood flow by arterial spin labeling in poststroke dementia
نویسندگان
چکیده
منابع مشابه
Robust Cerebral Blood Flow Map Estimation in Arterial Spin Labeling
Non-invasive measurement of Cerebral Blood Flow (CBF) is now feasible thanks to the introduction of Arterial Spin Labeling (ASL) Magnetic Resonance Imaging (MRI) techniques. To date, the low signalto-noise ratio of ASL gives us no option but to repeat the acquisition in order to accumulate enough data to get a reliable signal. Perfusion signal is usually extracted by averaging across the repeti...
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Arterial spin labeling (ASL) techniques are gaining popularity for visualizing and quantifying cerebral blood flow (CBF) in a range of patient groups. However, most ASL methods lack vessel-selective information, which is important for the assessment of collateral flow and the arterial supply to lesions. In this study, we explored the use of vessel-encoded pseudocontinuous ASL (VEPCASL) with mul...
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increases during the HS infusion. Corrected for multiple comparisons (FDR, p < 0.05). Fig. 2 Right insula time courses: CBF changes (relative to baseline) as a function of time in the right insula for the purely tonic stimulus (black) and the bolus stimulus (purple) (ref. 4). Smoothed and raw data shown. Acute vs. Tonic Muscular Pain: Changes in Cerebral Blood Flow as Imaged by Arterial Spin La...
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BACKGROUND AND PURPOSE On MR imaging, white matter hyperintensities (WMH) on T2-weighted images are generally considered as a surrogate marker of ischemic small vessel disease in elderly subjects. Pulsed arterial spin-labeling (PASL) is a noninvasive MR perfusion-weighted technique. We hypothesized that elderly subjects with diffuse confluent WMH should have lower cerebral blood flow (CBF) meas...
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Although arterial spin labeling (ASL) is appealing for mapping long-term changes in functional activity, inter-sessional variations in basal blood flow, arterial transit times (ATTs), and alignment errors, can result in significant false activation when comparing images from separate sessions. By taking steps to reduce these sources of noise, this study assessed the ability of ASL to detect fun...
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ژورنال
عنوان ژورنال: Neurology
سال: 2011
ISSN: 0028-3878,1526-632X
DOI: 10.1212/wnl.0b013e318217e76a