title: Migration of Tc-99m DTPA from the cerebral ventricle to the subarachnoid space.
abstract: A 70-year-old woman was examined because of increasing problems with cognition. She had a history of a cerebral shunt placed surgically 10 years previously. Introduction of Tc-99m DTPA directly into the ventricular cavity revealed good ventricular distribution, followed by progression downward, as though into a previous ventriculoperitoneal shunt. However, a chest radiograph revealed what appeared to be a shunt tube in the right atrium. Delayed lateral images showed activity in proximity to the vertebral column, indicating migration of tracer and cerebrospinal fluid into the dorsal and lumbar subarachnoid space.
authors.affiliation: Division of Nuclear Medicine, Department of Diagnostic Imaging and Therapeutics, University of Connecticut Health Center, Farmington, Connecticut 06030-2804, USA.
authors.forename: John A
authors.initials: JA
authors.lastname: Vento
authors.forename: Harold
authors.initials: H
authors.lastname: Moskowitz
authors.forename: Richard P
authors.initials: RP
authors.lastname: Spencer
authors.forename: Weiguo
authors.initials: W
authors.lastname: Ye
mesh_terms: D000368:Aged; D002552:Cerebral Ventricles / Q000000981:diagnostic imaging* / Q000601:surgery; D002555:Cerebrospinal Fluid / Q000000981:diagnostic imaging*; D002557:Cerebrospinal Fluid Shunts; D003072:Cognition Disorders / Q000209:etiology; D005260:Female; D006801:Humans; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals / Q000134:cerebrospinal fluid; D013346:Subarachnoid Space / Q000000981:diagnostic imaging*; D013353:Subdural Effusion / Q000000981:diagnostic imaging*; D016284:Technetium Tc 99m Pentetate
chemical_list: D019275:Radiopharmaceuticals; D016284:Technetium Tc 99m Pentetate