Biexponentially Weighted Sodium Imaging with Higher SNR Efficiency

Nadia Benkhedah¹, Peter Bachert¹, Armin M. Nagel¹

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.