title: Contemporary concepts for imaging urinary tract obstruction.
abstract: Ultrasound is an integral tool in the contemporary assessment of urinary tract obstruction. Pulsed and color Doppler have eliminated many previous false-positives due to blood vessels or non-obstructive hydronephrosis. Limitations of the ultrasound technique still exist and on occasion necessitate the utilization of intravenous urography.
authors.affiliation: Department of Diagnostic Imaging, Rhode Island Hospital, Providence 02903.
authors.forename: J J
authors.initials: JJ
authors.lastname: Cronan
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging*; D007669:Kidney Calculi / Q000000981:diagnostic imaging; D014465:Ultrasonics; D014463:Ultrasonography; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging*; D014567:Urography