Origin of the MRI Contrast in Natural and Hydrogel Formulation of Pineapple Juice

Figure 2

¹H longitudinal relaxivity profiles (circles) and transverse relaxivity at 400 MHz (stars) of Mn²⁺ ions in pineapple juice at 25°C (solid symbols) and 37°C (empty symbols). The solid and dotted lines represent the best fit profiles of the longitudinal and transverse relaxivities, respectively. The thin lines refer to the fit without inclusion of the order parameter .