title: 123I-SCH 23982 is not suitable for dopamine D1 receptor imaging in vivo in the human brain.
abstract: The tracer 123I-SCH 23982 was tested with regard to its ability to image dopamine D1 receptor in the human brain in vivo with single photon emission computed tomography (SPECT). The tracer did not reach equilibrium with regard to its binding to dopamine D1 receptors, presumably owing to fast metabolism to hydrophilic products and deiodination. It is concluded that 123I-SCH 23982 is not suitable for dopamine D1 receptor imaging with SPECT in the human brain.
authors.affiliation: Department of Nuclear Medicine, Academic Medical Centre, Amsterdam, The Netherlands.
authors.forename: N P
authors.initials: NP
authors.lastname: Verhoeff
authors.forename: A
authors.initials: A
authors.lastname: Bekier
authors.forename: H F
authors.initials: HF
authors.lastname: Beer
authors.forename: P A
authors.initials: PA
authors.lastname: Schubiger
authors.forename: P
authors.initials: P
authors.lastname: Fennema
authors.forename: E A
authors.initials: EA
authors.lastname: van Royen
mesh_terms: D000328:Adult; D000368:Aged; D001552:Benzazepines / Q000031:analogs & derivatives*; D001921:Brain / Q000000981:diagnostic imaging*; D001923:Brain Chemistry; D000075202:Contraindications; D018492:Dopamine Antagonists; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes; D008297:Male; D008875:Middle Aged; D017447:Receptors, Dopamine D1 / Q000032:analysis*; D015899:Tomography, Emission-Computed, Single-Photon
chemical_list: C049558:8-iodo-2,3,4,5-tetrahydro-3-methyl-5-phenyl-1H-3-benzazepine-7-ol; D001552:Benzazepines; D018492:Dopamine Antagonists; D007457:Iodine Radioisotopes; D017447:Receptors, Dopamine D1