title: FDA approves three imaging agents and considers two other agents and the gastric emptying petition.
authors.forename: S M
authors.initials: SM
authors.lastname: Tilyou
mesh_terms: D005746:Gastric Emptying; D006801:Humans; D011868:Radioisotopes; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D011868:Radioisotopes