Fig 3. Paramagnetic and susceptibility broadening effect on ¹⁹F MRI.

(A) ¹⁹F images of C3 (1000 mM, 600 mM, 100 mM) with 50 mM gadolinium added to induce paramagnetic line broadening. Images were acquired with a gradient echo FLASH sequence, TE = 1.3 ms, TR adapted to allow full relaxation, matrix size = 64 × 64, FOV = 1.2 × 1.2 cm², N_R = 1, and slice thickness = 4 cm. (B) ¹⁹F image intensity plots for C3 (424 mM and 212 mM) in a glass bead medium (sketch) inducing susceptibility line broadening.