Fig. 11
From: Nanoparticles for MRI-guided radiation therapy: a review

(Reprinted from Wei et al. (2017), copyright 2017, National Academy of Sciences)
Synthesis of ultrasmall zwitterion-coated SPIONs
From: Nanoparticles for MRI-guided radiation therapy: a review
(Reprinted from Wei et al. (2017), copyright 2017, National Academy of Sciences)
Synthesis of ultrasmall zwitterion-coated SPIONs