Vasomodulation of skeletal muscle BOLD signal
نویسندگان
چکیده
منابع مشابه
BOLD magnetic resonance imaging of skeletal muscle.
Blood-oxygen-level-dependent (BOLD) imaging was a concept introduced in 1990 for evaluating brain activation. The method relies on magnetic resonance imaging (MRI) contrast resulting from changes in the microvascular ratio of oxyhaemoglobin (oxyHb) to deoxyhaemoglobin (deoxyHb). OxyHb is diamagnetic, whereas deoxyHb is paramagnetic, which produces a local bulk magnetic susceptibility effect and...
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A. D. Davis, G. D. Wells, B. Falk, and M. D. Noseworthy Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada, Medical Physics and Applied Radiation Sciences, St. Joseph's Healthcare, Hamilton, Ontario, Canada, Department of Anesthesia, University of Toronto, Toronto, Ontario, Canada, Physiology and Experimental Medicine, The Hospital for Sick Children, ...
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Neuronal nitric oxide synthase (nNOS) is abundantly expressed in skeletal muscle where it associates with the dystrophin complex at the sarcolemma by binding to the PDZ domain of alpha-syntrophin. Nitric oxide (NO) produced by skeletal muscle nNOS is proposed to regulate blood flow in exercising muscle by diffusing from the skeletal muscle fibers to the nearby microvessels where it attenuates a...
متن کاملEffect of Phase-Encoding Reduction on Geometric Distortion and BOLD Signal Changes in fMRI
Introduction Echo-planar imaging (EPI) is a group of fast data acquisition methods commonly used in fMRI studies. It acquires multiple image lines in k-space after a single excitation, which leads to a very short scan time. A well-known problem with EPI is that it is more sensitive to distortions due to the used encoding scheme. Source of distortion is inhomogeneity in the static B0 field that ...
متن کاملInterpreting the BOLD signal.
The development of functional magnetic resonance imaging (fMRI) has brought together a broad community of scientists interested in measuring the neural basis of the human mind. Because fMRI signals are an indirect measure of neural activity, interpreting these signals to make deductions about the nervous system requires some understanding of the signaling mechanisms. We describe our current und...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2006
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.20690