Figure 1b:

(a) In vivo axial merged ¹H and ¹⁹F MR images of the abdomen in mice with colitis-associated dysplasia obtained at different days. Accumulation of PFCs is visible in the colon (black arrows) and vertebrae (white arrows). ¹⁹F signal intensity was also detected in the kidney at day 110 (arrowhead). (b) In vivo axial MR images in control mice at days 50 and 65 do not show ¹⁹F signal intensity in the colon. The ¹⁹F signal intensity is seen in only the vertebra and the iliac lymph nodes. PFC was injected on day 48, and no further PFC was given; therefore, control mice were not examined after day 65. (c) Graph shows normalized ¹⁹F SNR in all ROIs combined. The ¹⁹F signal intensity persisted over time. Error bars indicate standard error of the mean.