The synthesis and bioconjugation of different nanoparticles enable molecular imaging experiments with different modalities: (a) fluorescence, (b) magnetic resonance imaging, (c) positron emission tomography, (d) magnetic particle imaging/computed tomography, adapted from [18
] with permission of the American Chemical Society, (e) photoacoustic imaging, and (f) computed tomography. Panel (d) is adapted from [19
], with permission of the Royal Society of Chemistry. Panel (e) is adapted from [20
] with permission of Elsevier.