title: [Morphology of abdominal aortic aneurysm and its clinical importance].
abstract: OBJECTIVE
  To investigate the morphology of abdominal aortic aneurysms(AAA) and anatomical importance in endovascular surgery.
  
  
  METHODS
  The images of AAA were measured by spiral CT angiography in 30 patients from January 1998 to December 2000.
  
  
  RESULTS
  The mean diameter of AAA was 5.9 cm (range: 4.0-12.2). The diameter of AAA was positively correlated with neck angle (r = 0.47, P < 0.05) and negatively correlated with neck length(r = -0.41, P < 0.05). Twelve patients(40%) were anatomically feasible for endovascular repair (EVR); 18 patients were excluded for EVR due to angulated proximal necks (mean 88.8 degrees, range 70 degrees-110 degrees) (16 patients; 53.3%), short neck (1; 3.3%), and unilateral common iliac artery occlusion with thrombosis in neck (1; 3.3%).
  
  
  CONCLUSIONS
  The angulated neck was a major single factor for excluding Chinese patients from EVR.
authors.affiliation: Department of Surgery, First Teaching Hospital, China Medical University, Shenyang 110001, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Luo
authors.forename: G
authors.initials: G
authors.lastname: Xu
mesh_terms: D000328:Adult; D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed