Abstract #2050
Fast, focused fMRI at high spatial resolution: 3D-EPI-CAIPI with cylindrical excitation
Wietske van der Zwaag 1 , Mayur Narsude 2 , Marzia Restuccia 2 , Olivier Reynaud 1,3 , Daniel Gallichan 1 , and Jose P. Marques 1
1
CIBM, EPFL, Lausanne, VD, Switzerland,
2
LIFMET,
EPFL, Lausanne, VD, Switzerland,
3
Department
of Radiology, Bernard and Irene Schwartz Center for
Biomedical Imaging, NYU School of Medicine, New York,
NY, United States
The 3D-EPI-CAIPI sequence was combined with a 2D-RF
pulse to selectively image a cylindrical region of
interest (such as the brainstem) with high spatial
(1.5mm) and high temporal resolution (1s/volume). Use of
the cylindrical excitation pulse did not reduce tSNR or
BOLD sensitivity within the region of interest. This
sequence allows a significant reduction of the FOV
compared to full slab acquisitions, which can be used to
increase spatial and/or temporal resolution and to
reduce susceptibility-induced distortions, finally
resulting in functional data with high spatio-temporal
resolution, high anatomical fidelity and high BOLD
sensitivity.
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