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Effects of DSC18 of DTPA-chitosan-g-C18 on the liposome’s ability to enhance MRI contrast. (a) Pseudo-colored MR phantom image and longitudinal relaxation rate (R1) of the gadolinium-loaded liposome (TI = 1000 ms). MR contrast and R1 were further increased with liposomes coated by DTPA-chitosan-g-C18. The scale bar represents MR signal intensity. (b) The independence of molar relaxivity (r1) on DSC18. Error bars represent standard deviation of the fit parameter.
