Spin-echo MRI using π/2 and π hyperbolic secant pulses
نویسندگان
چکیده
منابع مشابه
Assessment of the Characteristics of MRI Coils in Terms of RF Non-Homogeneity Using Routine Spin Echo Sequences
Introduction: One of the major causes of image non-uniformity in MRI is due to the existence of non-homogeneity in RF receive and transmit. This can be the most effective source of error in quantitative studies in MRI imaging. Part of this non-homogeneity demonstrates the characteristics of RF coil and part of it is due to the interaction of RF field with the material being imaged...
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Introduction In recent years, there have been many developments in the field of fast preclinical imaging based on EPI sequences whether to study brain function with BOLD-fMRI [1], brain anatomy with DWI [2] or image the accumulation of contrast media in tissue with DCE-MRI [3]. Echo Volumar Imaging (EVI) is a 3D extension of EPI that possess the same advantages (elevated signal-to-noise ratio, ...
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PURPOSE Fast field-cycling MRI (FFC-MRI) is a technique that promises to expand upon the diagnostic capabilities of conventional MRI by allowing the main field, B0 , to be varied during a pulse sequence, thus allowing access to new types of endogenous contrast. However, this necessitates longer scan times, which can limit the technique's application to clinical research. In this paper, an adapt...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2008
ISSN: 0740-3194
DOI: 10.1002/mrm.21822