title: Attenuation effects of biliary endoprostheses on therapeutic radiation.
abstract: Seven commercially available biliary stents were tested to determine if they caused any clinically important attenuation of therapeutic radiation. Attenuation effects were evaluated in models of brachytherapy (iridium-192 source) and external beam radiation therapy (cobalt-60 source), with use of parameters that mimicked those used in patient treatment for biliary neoplasms. No stent demonstrated clinically important attenuation or scatter of therapeutic radiation, so local dosimetry was not affected.
authors.affiliation: Department of Abdominal and Interventional Radiology, Massachusetts General Hospital, Boston, Mass., USA.
authors.forename: W W
authors.initials: WW
authors.lastname: Mayo-Smith
authors.forename: S L
authors.initials: SL
authors.lastname: Dawson
authors.forename: T
authors.initials: T
authors.lastname: Mauceri
authors.forename: P R
authors.initials: PR
authors.lastname: Mueller
mesh_terms: D001650:Bile Duct Neoplasms / Q000532:radiotherapy* / Q000628:therapy; D001918:Brachytherapy; D003037:Cobalt Radioisotopes / Q000627:therapeutic use*; D006801:Humans; D007496:Iridium Radioisotopes / Q000627:therapeutic use*; D011867:Radioisotope Teletherapy; D011879:Radiotherapy Dosage; D015607:Stents
chemical_list: D003037:Cobalt Radioisotopes; D007496:Iridium Radioisotopes