Figure 1 | Scientific Reports

Figure 1

From: Solid-state 31P and 1H chemical MR micro-imaging of hard tissues and biomaterials with magic angle spinning at very high magnetic field

Figure 1

(a) 31P NMR spectra of the CDA phantom recorded at 17.6 T without (top, 8 scans) and with MAS (bottom, one scan) at a spinning frequency of 10 kHz. The asterisks indicate spinning sidebands. (b) 31P spin-echo decay curves of the CDA phantom without MAS (open blue squares) and with MAS (filled blue squares) at a spinning frequency of 10 kHz. The MAS spin echo decay curves obtained applying 1H CW or 1H SPINAL64 decoupling (1H RF-field strength of 100 kHz) during the echo time are shown as filled orange circles and filled green triangles, respectively. The black lines correspond to best fits of experimental data with single exponential decay functions. The corresponding T2’ values are 15, 20 and 26.7 ms, without 1H decoupling, with CW and with SPINAL64 decoupling, respectively. The insert shows a zoom of the 31P spin echo decay under static conditions without 1H decoupling (open blue squares), and with CW (open orange circles) or SPINAL64 decoupling (open green triangles).

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