title: Milestones.
authors.forename: P J
authors.initials: PJ
authors.lastname: Ell
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging* / Q000378:metabolism; D049673:History, 20th Century; D006801:Humans; D009683:Nuclear Medicine / Q000266:history; D011954:Receptors, Dopamine / Q000378:metabolism*; D013667:Technetium; D015899:Tomography, Emission-Computed, Single-Photon
chemical_list: D011954:Receptors, Dopamine; D013667:Technetium