Table 1.

Comparison of relaxivity measurements (r₁, r₂) in mM⁻¹ms⁻¹ for each contrast agent in deionized water at room temperature between 60 MHz*, 3 T spin echo (SE), and 3 T MRF.

Contrast Agent	r1 60 MHz	r2 60 MHz	r1 3 T SE	r1 3 T MRF	r2 3 T SE	r2 3 T MRF
Gd	0.0040	0.0048	0.0051	0.0056	0.0060	0.0076
Mn	0.0054	0.0652	0.0068	0.0067	0.1079	0.1144

^*60 MHz measurements made at 37 °C.