ALB and neoplasm: In a recent study, Li et al. utilized a small‐molecule NIR‐II fluorophore (FS) to decorate bovine serum albumin (BSA)‐mediated biomimetic mineralized gadolinium oxide nanodots (GdNDs), thus preparing ultrasmall versatile nanodots (FS‐GdNDs) for dual‐modal MR/NIR‐II imaging‐guided PTT (Figure 20a).[149] FS‐GdND was intravenously injected into inn4T1 tumor‐bearing mice, and the MRI signal of the tumor region at 2 h post injection was enhanced in comparison with the pre‐injection intensity (Figure 20b).