Increasing spatial coverage for high-resolution functional MRI
نویسندگان
چکیده
منابع مشابه
Insights into new techniques for high resolution functional MRI.
Non-invasive functional magnetic resonance imaging (fMRI) has opened a unique window into human and animal brain function, with a spatial resolution of a few millimeters and a temporal resolution of a few seconds. To further improve the current technical limitations of fMRI, various post-processing and data acquisition schemes were developed. Improved fMRI methods include variations of a conven...
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Introduction High temporal resolution is important to detect transient BOLD signal modulations in event-related functional MRI (fMRI) [1]. If spatial coverage is required, a major challenge for high resolution fMRI is limited temporal resolution. The UNFOLD method [2] to increase image acquisition speed has recently been applied to high resolution fMRI using a 3D-spiral sequence [3]. The presen...
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PURPOSE To combine parallel imaging with 3D single-shot acquisition (echo volumar imaging, EVI) in order to acquire high temporal resolution volumar functional MRI (fMRI) data. MATERIALS AND METHODS An improved EVI sequence was associated with parallel acquisition and field of view reduction in order to acquire a large brain volume in 200 msec. Temporal stability and functional sensitivity we...
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Magnetic resonance venography (MRV) has been used to assess the effects of medical treatment for and the resolution of cerebral venous diseases. The contrast mechanism involving MRV used for functional or anatomical applications has been based on the local magnetic field inhomogeneity created by deoxyhemoglobin, which determines MR signal intensity [1,2]. Susceptibility weighted imaging (SWI), ...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2008
ISSN: 0740-3194
DOI: 10.1002/mrm.21898