B1 insensitive zoomed FOV imaging

The goal of this work is to provide a new tilted algorithm for zoomed FOV DWI with improved image uniformity, and validate it on 1.5T system. It uses a different titled excitation k-space trajectory, which is also blipped at slice direction, but just tilts the PE direction gradients. It does not increase the k-space step at PE direction, so it has no influence on the sub-pulse bandwidth. It moderates the requirements for hardware components compared with rFOV. We called it iZoom (Improved Zoom FOV imaging).

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