Steady-state functional MRI using spoiled small-tip fast recovery imaging
نویسندگان
چکیده
منابع مشابه
Steady-state Functional MRI Using Spoiled Small-tip Fast Recovery (STFR) Imaging
Steady-state spin path. The tip-up pulse (blue) is tailored to the mean free precession angle ( within each voxel, and there is in general a mismatch between the isochromat spin phase in that voxel and the tip-up phase. (b) Transverse magnetization profile vs. phase mismatch. The observed voxel signal is obtained by integrating the profile over the intra-voxel B0 distribution, which depends on ...
متن کاملSteady-state functional MRI using spoiled small-tip fast recovery imaging.
PURPOSE To determine whether a recently proposed steady-state magnetic resonance imaging (MRI) sequence, "small-tip fast recovery" (STFR), can be used for functional brain imaging. Compared to existing functional MRI (fMRI) based on T2*-contrast and long echo time, STFR has the potential for high-resolution imaging with reduced B0 artifacts such as geometric distortions, blurring, or local sign...
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PURPOSE Small-tip fast recovery (STFR) imaging has been proposed recently as a potential alternative to balanced steady-state free precession (bSSFP). STFR relies on a tailored "tip-up" radio-frequency pulse to achieve comparable signal level as bSSFP, but with reduced banding artifacts and transient oscillations, and is compatible with magnetization-preparation pulses. Previous STFR implementa...
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Introduction: Small tip fast recovery (STFR) imaging has been proposed recently as a potential alternative to balanced steady state free precession (bSSFP) [1, 2]. STFR relies on a tailored “tip-up” RF pulse (Fig. 1(a)) to achieve comparable signal level and image contrast as bSSFP, but with reduced banding artifacts. Previous STFR implementations used 2D or 3D pulses spatially tailored to the ...
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Small-tip fast recovery (STFR) imaging is a new steady-state imaging sequence that is a potential alternative to balanced steady-state free precession. Under ideal imaging conditions, STFR may provide comparable signal-to-noise ratio and image contrast as balanced steady-state free precession, but without signal variations due to resonance offset. STFR relies on a tailored "tip-up," or "fast re...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2014
ISSN: 0740-3194
DOI: 10.1002/mrm.25146