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

Figure 3

¹H longitudinal relaxivity (a, c) and transverse relaxivity (b, d) at 25°C and their dipolar, Fermi-contact, and outer sphere contributions in pineapple juice (a, b) and in Mn²⁺ solution (c, d).

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(b)

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(d)