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. 2017 Aug 10;7:7850. doi: 10.1038/s41598-017-08092-w

Figure 6.

Figure 6

Left plot of relaxation rate R1 (R1 = 1/T1) over Fe concentration of the IONP-DHCA nanoparticles in solution. The slope indicates the specific relaxivity (r1); right plot of relaxation rate R2 (R2 = 1/T2) over Fe concentration of the IONP-DHCA nanoparticles in solution. The slope indicates the specific relaxivity (r2). Relaxivity values have been converted to mM−1 s−1 using the molar mass of iron (M = 55.845 g/mol).