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Zusammenfassung:
High-resolution EPI at ultra-high field often suffers from distortions and requires a short time to k-space center in order to achieve the optimal BOLD contrast. In this work, zoomed functional imaging was combined with the point spread function mapping technique in order to obtain images with re-duced distortions acquired with the optimal TE for fMRI at 9.4T. The approach was tested in a functional experiment with 0.8 mm and 0.65 mm iso-tropic resolution. Activation maps obtained from the distortion corrected images showed a higher number of activated voxels then the maps from the undistorted images and match well with anatomy.
