Comparison of Radially Sampled fbSSFP Sequences for Direct 31 P MRI

Phosphorus and particularly phosphocreatine play a crucial role in physiological processes such as the human energy metabolism. Since the in vivo MR signal of ³¹ P is four orders of magnitude smaller compared to hydrogen, new acquisition strategies to improve the SNR are required. In this work, the human calf was examined applying a radially sampled and density adapted screening combined with several fbSSFP sequences. The highest SNR was achieved for a positive followed by a negative radially sampled gradient acquiring two contrasts.

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