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Abstract #2601

Enhanced Image Resolution and Reduced Measurement Time Using Inner Volume Imaging and Parallel Excitation

Johannes Thomas Schneider1,2, Martin Haas2, J├╝rgen Hennig2, Sven Junge1, Wolfgang Ruhm1, Peter Ullmann1

1Bruker BioSpin MRI GmbH, Ettlingen, Germany; 2Dept. of Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Freiburg, Germany

With parallel transmission / TransmitSENSE arbitrarily shaped regions can be selectively excited with reasonable pulse durations which allows inner volume imaging by reduction of the field of view (FOV) to excited regions of interest. The achievable FOV reduction factor is limited by decreasing SNR and by potentially backfolded residual signals resulting in aliasing artifacts, which both is assessed in the present study. FOV reduction by a factor of 4 in each direction was applied successfully to imaging of a phantom, a kiwi and a rat in-vivo. Reduction of measurement time and enhanced image resolution by the same factor were achieved.