title: Volume changes in the gallbladder in association with various radiologic examinations.
abstract: OBJECTIVE
  Our aim was to evaluate with sonography the volume changes of the gallbladder after intravenous administration of nonionic, iodinated contrast agents with or without ingestion of contrast agent or water.
  
  
  METHODS
  A total of 191 patients received intravenous injection of 50 ml of nonionic contrast agent (Group A), intravenous injection of 100 ml of contrast medium (Group B), intravenous injection of 100 ml of contrast medium together with ingestion of 1000 ml of a dilute solution of contrast medium (Group C), or 1000 ml of water taken orally (Group D). The gallbladder volume was measured by ultrasonography in the fasting state in all groups, 15 minutes after intravenous injection of contrast medium in Groups A, B, and C and 30 minutes after water ingestion in Group D.
  
  
  RESULTS
  In all groups, the volume of the gallbladder was statistically lower after the procedure than before. There was no significant difference among the groups in terms of this gallbladder volume change.
  
  
  CONCLUSIONS
  Intravenous injection of nonionic, iodinated contrast medium or ingestion of water or a dilute solution of contrast medium for various radiological examinations results in contraction of the gallbladder. Contrast-enhanced radiological examinations may interfere with sonographic evaluation of the gallbladder. If necessary, gallbladder ultrasonographic examination should be repeated with the patient in a fasting state. (c) 2005 Wiley Periodicals, Inc. J Clin Ultrasound 33:214-217, 2005.
authors.affiliation: Department of Radiology, Faculty of Medicine, University of Dicle, 21280-Diyarbakir, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Nazaroglu
authors.forename: Cihan
authors.initials: C
authors.lastname: Akgül
authors.forename: Yaşar
authors.initials: Y
authors.lastname: Bükte
authors.forename: Aslan
authors.initials: A
authors.lastname: Bilici
authors.forename: Masum
authors.initials: M
authors.lastname: Simşek
mesh_terms: D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002765:Cholecystography; D003287:Contrast Media / Q000008:administration & dosage*; D005704:Gallbladder / Q000000981:diagnostic imaging*; D006801:Humans; D007275:Injections, Intravenous; D008875:Middle Aged; D014463:Ultrasonography
chemical_list: D003287:Contrast Media