title: Contrast material and gallbladder kinetics: implications for same day sonography after intravenous pyelography or CT scanning.
abstract: Sonographic examination of the gallbladder has allowed us to study the effects of various substances on this organ. A prospective study involving 77 patients was undertaken to evaluate the effects of intravenous or oral contrast agents on gallbladder volume changes in patients without known gallbladder disease. A mean volume after contraction of 24.8% was observed after administration of intravenous contrast agent (P < 0.01) and of 31.9% after oral administration (P < 0.01). This phenomenon of contraction of the gallbladder should therefore be recognized when sonographic or computed tomographic evaluation of the gallbladder is undertaken after imaging procedures that use radiographic contrast agents either intravenously or orally.
authors.affiliation: Department of Radiology and Nuclear Medicine, University of the West Indies, St. Augustine, Trinidad.
authors.forename: O
authors.initials: O
authors.lastname: Khan
authors.forename: R
authors.initials: R
authors.lastname: Naipaul
authors.forename: R S
authors.initials: RS
authors.lastname: Rampaul
authors.forename: V
authors.initials: V
authors.lastname: Abhang
authors.forename: A
authors.initials: A
authors.lastname: Archibald
authors.forename: P
authors.initials: P
authors.lastname: Maharaj
authors.forename: S
authors.initials: S
authors.lastname: Mohammed
authors.forename: L
authors.initials: L
authors.lastname: Mohammed
mesh_terms: D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D000368:Aged; D003287:Contrast Media / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D005704:Gallbladder / Q000000981:diagnostic imaging / Q000187:drug effects*; D016473:Gallbladder Emptying / Q000187:drug effects; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D014567:Urography
chemical_list: D003287:Contrast Media