Fast spin echo sequences for BOLD functional MRI
نویسندگان
چکیده
منابع مشابه
Optimized three-dimensional fast-spin-echo MRI.
Spin-echo-based acquisitions are the workhorse of clinical MRI because they provide a variety of useful image contrasts and are resistant to image artifacts from radio-frequency or static field inhomogeneity. Three-dimensional (3D) acquisitions provide datasets that can be retrospectively reformatted for viewing in freely selectable orientations, and are thus advantageous for evaluating the com...
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B. A. Poser, D. G. Norris FC Donders Centre for Cognitive Neuroimaging, Nijmegen, Netherlands Introduction Multiply-refocused sequences such as HASTE are attractive for functional MRI (fMRI) as they are free of susceptibility artifacts, and yield pure T2 contrast. The latter can be advantageous for two fMRI applications: First, spin echo (SE) based fMRI. SE reportedly offers better spatial loca...
متن کاملcomparison of maximum signal intensity of magnevist contrast agent in modified t1 weighted spin echo, t1 weighted fast spin echo and t1 weighted gradient echo sequences
background: nowadays mri examinations have been widely used in clinical applications for many diagnoses. the use of contrast agent in mri improves lesion detection and characterization and causes more accurate diagnosis. objectives: the aim of this study was comparing to optimal dose of magnevist contrast agent in modified t1w se (spin echo), t1w fse (fast spin echo) and t1w gre (gradient ech...
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PURPOSE To compare conspicuousness of head and neck lesions on fast spin-echo sequences and conventional spin-echo sequences. METHODS Forty consecutive patients with 61 head and neck lesions were evaluated. Lesion conspicuousness was qualitatively compared on conventional spin-echo and fast spin-echo sequences, using both spin-density and T2-weighted images. Thirty-six lesions had surgical or...
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ژورنال
عنوان ژورنال: Magnetic Resonance Materials in Physics, Biology and Medicine
سال: 2007
ISSN: 0968-5243,1352-8661
DOI: 10.1007/s10334-006-0063-x