title: [Multi-slice spiral computed tomography angiography for preoperative evaluation of laparoscopic right hemicolectomy].
abstract: OBJECTIVE
  To explore the application value of multi-slice spiral CT angiography (MSCTA) for the preoperative evaluation of laparoscopic right hemicolectomy.
  
  
  METHODS
  Abdominal CT slice images of 160 patients(group A) were collected for 3-dimensional reconstruction using volume rendering technique. Interpretation and anatomical classification of the major branches and course of the superior mesenteric artery(SMA) in the reconstructed images of the arterial phase were carried out. Forty-five patients(group B) undergoing laparoscopic right hemicolectomy were evaluated with MSCT combining images obtained from the arterial phase and portal venous phase. The relationship between ileocolic artery and ileocolic vein was analyzed. The preoperative imaging findings were compared to that revealed during the procedure.
  
  
  RESULTS
  In group A, 70(43.8%) out of 160 patents showed anatomical variations of the superior mesenteric artery, of whom 51(31.9%) had two right colic arteries, and 14(8.8%) had two middle colic arteries. Preoperative MSCTA showed that in group B ileocolic artery was running ventrally to ileocolic vein in 13(28.9%) out of 45 patients, while running dorsally in 32(71.1%). Compared to the skeletonized vessels during the procedure, the consistency rate was 100%.
  
  
  CONCLUSIONS
  Anatomical variations of superior mesenteric artery are common, therefore, multi-slice spiral CT scan is vital for preoperation evaluation.
authors: Department of General Surgery, Peking University Third Hospital, Beijing 100191, China.
authors: Guan
authors: G
authors: Wang
authors: Lei-lei
authors: LL
authors: Teng
authors: Ji-hui
authors: JH
authors: Wu
authors: Hai-ting
authors: HT
authors: Xie
authors: Yang
authors: Y
authors: Zhang
authors: Wei
authors: W
authors: Fu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography / Q000379:methods*; D002648:Child; D003082:Colectomy / Q000379:methods; D005260:Female; D006801:Humans; D010535:Laparoscopy; D008297:Male; D017538:Mesenteric Artery, Superior / Q000000981:diagnostic imaging; D008875:Middle Aged; D011446:Prospective Studies; D036542:Tomography, Spiral Computed / Q000379:methods*; D055815:Young Adult