title: [Ultrasound, abdominal X-ray and dual-source CT in the diagnosis of colon tumor mechanical obstruction].
abstract: OBJECTIVE
  To study the value of ultrasound, abdominal X-ray, and dual-source CT (DSCT) in the diagnosis of colon tumor obstruction.
  
  
  METHODS
  A retrospective analysis was conducted among 45 patients who were admitted to our department between October 2010 and August 2011 for abdominal pain. All the patients underwent ultrasound, abdominal X-ray and DSCT examinations and subsequent surgical interventions, which confirmed the diagnosis of colon tumor obstruction.
  
  
  RESULTS
  DSCT diagnosis was obviously more efficient than ultrasound and X-ray in detecting colon obstruction by neoplasms, and could better predict the position of the obstruction. Complete information of the vessels in the surgical field could be obtained by DSCT imaging three-dimensional reconstruction.
  
  
  CONCLUSIONS
  Compared with ultrasound and X-ray, DSCT is more effective in the diagnosis of colon tumor obstruction by acquiring more thorough information by imaging reconstruction and should be considered for a rapid and accurate diagnosis.
authors.affiliation: Department of Emergency Medicine, Nanfang Hospital; Southern Medical University, Guangzhou 510515, China. E-mail: 974118pcq@163.com.
authors.forename: Chunqiu
authors.initials: C
authors.lastname: Pan
authors.forename: Gang
authors.initials: G
authors.lastname: Wu
authors.forename: Wangmei
authors.initials: W
authors.lastname: Zhou
authors.forename: Bixiang
authors.initials: B
authors.lastname: Yu
authors.forename: Can-Hui
authors.initials: CH
authors.lastname: Zeng
authors.forename: Da
authors.initials: D
authors.lastname: Wang
authors.forename: Chao
authors.initials: C
authors.lastname: Luo
authors.forename: Ba-Sheng
authors.initials: BS
authors.lastname: Hu
mesh_terms: D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000150:complications; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography