title: Comparison of Non-contrast-Enhanced Computed Tomography and Intravenous Pyelogram for Detection of Patients With Urinary Calculi.
abstract: OBJECTIVE
  The aim of this study was to investigate the changing pattern in the use of intravenous pyelogram (IVP), conventional computed tomography (CT), and non-contrast-enhanced computed tomography (NECT) for evaluation of patients with acute flank pain.
  
  
  METHODS
  We retrospectively reviewed the medical records of 2,180 patients with acute flank pain who had visited Bundang Jesaeng General Hospital between January 2008 and December 2012 and analyzed the use of IVP, conventional CT, and NECT for these patients.
  
  
  RESULTS
  During the study period there was a significant increase in NECT use (p<0.001) and a significant decrease in IVP use (p<0.001). Conventional CT use was also increased significantly (p=0.001). During this time the proportion of patients with acute flank pain who were diagnosed with urinary calculi did not change significantly (p=0.971).
  
  
  CONCLUSIONS
  There was a great shift in the use of imaging study from IVP to NECT between 2008 and 2012 for patients with acute flank pain.
authors.affiliation: Department of Urology, Bundang Jesaeng Hospital, Seongnam, Korea.
authors.forename: Go San
authors.initials: GS
authors.lastname: Lim
authors.affiliation: Department of Urology, Bundang Jesaeng Hospital, Seongnam, Korea.
authors.forename: Seok Heun
authors.initials: SH
authors.lastname: Jang
authors.affiliation: Department of Urology, Bundang Jesaeng Hospital, Seongnam, Korea.
authors.forename: Jeong Hwan
authors.initials: JH
authors.lastname: Son
authors.affiliation: Department of Urology, Bundang Jesaeng Hospital, Seongnam, Korea.
authors.forename: Jae Won
authors.initials: JW
authors.lastname: Lee
authors.affiliation: Department of Urology, Bundang Jesaeng Hospital, Seongnam, Korea.
authors.forename: Jae Seung
authors.initials: JS
authors.lastname: Hwang
authors.affiliation: Department of Urology, Bundang Jesaeng Hospital, Seongnam, Korea.
authors.forename: Chae Hong
authors.initials: CH
authors.lastname: Lim
authors.affiliation: Department of Urology, Bundang Jesaeng Hospital, Seongnam, Korea.
authors.forename: Dae Ji
authors.initials: DJ
authors.lastname: Kim
authors.affiliation: Department of Urology, Bundang Jesaeng Hospital, Seongnam, Korea.
authors.forename: Dae Sung
authors.initials: DS
authors.lastname: Cho
keywords: Flank pain; Non-contrast-enhanced computed tomography; Urinary calculi