In Vivo Zoom Imaging using Transmit SENSE

Ingmar Graesslin¹, Sebastian Boetzl¹, Ulrich Katscher¹, Kay Nehrke¹, Bjoern Annighoefer², Giel Mens³, Peter Brnert¹

Zoom imaging allows an increase of the spatial resolution in the targeted region of interest (ROI) without increasing the scan time. Alternatively, maintaining spatial resolution, zoom imaging allows a reduction of the scanning time by reducing the field of view (FOV) to the ROI. For both techniques, potential backfolding artefacts from body regions outside the reduced FOV can be suppressed via local excitation. This local excitation can be performed by multi-dimensional RF pulses, which can be accelerated using spatial transmit sensitivity encoding instead of full gradient encoding.