title: Re: Why renography can fail in the diagnosis of upper urinary tract obstruction.
authors.forename: C
authors.initials: C
authors.lastname: Dawson
authors.forename: H N
authors.initials: HN
authors.lastname: Whitfield
mesh_terms: D006801:Humans; D011866:Radioisotope Renography; D016055:Urinary Retention / Q000000981:diagnostic imaging*