title: [Contrast principles in nuclear magnetic resonance imaging].
mesh_terms: D003287:Contrast Media; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D009589:Nitrogen Oxides
chemical_list: D003287:Contrast Media; D009589:Nitrogen Oxides
vernacular_title: Eléments du contraste en imagerie par résonance magnétique nucléaire.