Meeting Banner
Abstract #1992

Biexponentially Weighted Sodium Imaging with Higher SNR Efficiency

Nadia Benkhedah1, Peter Bachert1, Armin M. Nagel1

1Dpt. Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany

In this study a new method for generating biexponentially weighted sodium images is presented. Only two instead of three RF pulses are required for filtering the signal. Images show an up to 3 times improved SNR compared to conventional triple quantum filtered (TQF) images with the same measurement parameters. Measurement time can be shortened with the new sequence design by reducing the number of averages (only two instead of six are required) or by reducing TR (as SAR is only about 2/3 of that of TQF sequences) resulting in better SNR efficiency.

Keywords

account acquisition adapted affected allow another application artifacts automatically becomes better birdcage body cancer cellular coherences coil comparable compartment compensated conditions contrast contributing contributions cycling dataset density detected detection diagram diagrams double efficiency eliminate enables excited expected eyes field filtered filtration fluid generate generated generating good gradient gradients hard head healthy hence implemented impractically improved in vivo inhomogeneities instead intensity intracellular introduced ions latter limitations long longitudinal lost magnetization mainly male materials medical originates originating partly pathological pathways peter phantom physics possibly prior projections prone proposed pulse pulses pure quantum radial radiology rapid readout reduced reducing refocused repetition required requires resonant restrictions saline satisfy shortened shorter sodium solution spin sqrt step steps strengths subtracted suppression system theoretical tissue triple ventricles volunteer whole years yields