title: Principles and practical aspects of contrast agents for NMR imaging.
mesh_terms: D000818:Animals; D003287:Contrast Media; D005609:Free Radicals; D006801:Humans; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy
chemical_list: D003287:Contrast Media; D005609:Free Radicals; D008024:Ligands