title: Prospective evaluation of contrast-enhanced computed tomography for the detection of colonic diverticular bleeding.
abstract: OBJECTIVE
  To prospectively evaluate the role of contrast-enhanced computed tomography (CE-CT) in the detection of colonic diverticular bleeding (CDB).
  
  
  METHODS
  Consecutive patients who presented with hematochezia and were clinically suspected of CDB were prospectively enrolled. Those who could undergo both CE-CT and total colonoscopy, and who were finally diagnosed as CDB, were included in the analysis.
  
  
  RESULTS
  Fifty-two cases were finally included in the analysis. The detection rate of CDB by CT was 15.4 % (8/52). Univariate analysis showed that the interval from the latest episode of hematochezia to the performance of CT and the presence of a past history of CDB were contributing factors for detection. The interval was 1.6 ± 4.6 h (mean ± SD) in patients detected by CT, and 3.4 ± 3.2 h in those without detection. The detection rate of CDB by total colonoscopy was 38.5 % (20/52). The overall detection rate was 46.2 % (24/52), which was superior to what CT or colonoscopy alone achieved.
  
  
  CONCLUSIONS
  CE-CT may play a complementary role to colonoscopy in patients with suspected CDB, but is not recommended for all cases due to its low detection rate. Patients who can be examined within 2 h of last hematochezia would be candidates for urgent CT.
authors.affiliation: Department of Gastroenterology, Sendai City Medical Center, 5-22-1, Tsurugaya, Miyagino-ku, Sendai, Miyagi 983-0824, Japan. ZVK05046@nifty.ne.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Obana
authors.forename: Naotaka
authors.initials: N
authors.lastname: Fujita
authors.forename: Reiji
authors.initials: R
authors.lastname: Sugita
authors.forename: Dai
authors.initials: D
authors.lastname: Hirasawa
authors.forename: Toshiki
authors.initials: T
authors.lastname: Sugawara
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Harada
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Oohira
authors.forename: Yuki
authors.initials: Y
authors.lastname: Maeda
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Koike
authors.forename: Kenjiro
authors.initials: K
authors.lastname: Suzuki
authors.forename: Taku
authors.initials: T
authors.lastname: Yamagata
authors.forename: Jun
authors.initials: J
authors.lastname: Kusaka
authors.forename: Kaori
authors.initials: K
authors.lastname: Masu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003108:Colonic Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D023881:Colonography, Computed Tomographic / Q000379:methods*; D003113:Colonoscopy; D003287:Contrast Media; D004241:Diverticulum, Colon / Q000150:complications / Q000000981:diagnostic imaging*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D007479:Iopamidol; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography / Q000379:methods*; D015999:Multivariate Analysis; D011446:Prospective Studies
chemical_list: D003287:Contrast Media; D007479:Iopamidol