title: [Spiral CT angiography in demonstration of cerebral aneurysms before and after treatment with titanium clips].
abstract: OBJECTIVE
  To determine the suitability of spiral CT angiography (SCTA) in patients with intracerebral titanium aneurysm clips.
  
  
  METHODS
  The section parameters were optimised using a phantom. 16 patients were examined preoperatively and 18 following treatment of aneurysms with clips.
  
  
  RESULTS
  The resolution, sensitivity and specificity for demonstrating cerebral aneurysms measuring > or = 3 mm was 91.3% and 75% respectively. In 15 patients with intracerebral clips there were no or only minor artefacts; three examinations were of no value because of major metal artefacts. Amongst six aneurysms demonstrated angiographically, two, which measured more than 3 mm, could be shown by SCTA.
  
  
  CONCLUSIONS
  SCTA was able to demonstrate intracerebral aneurysms measuring > or = 3 mm. Titanium clips did not usually affect image quality significantly.
authors.affiliation: Klinikum Grosshadern, Ludwig-Maximilians-Universität München.
authors.forename: C
authors.initials: C
authors.lastname: Becker
authors.forename: C
authors.initials: C
authors.lastname: Volkmar
authors.forename: J
authors.initials: J
authors.lastname: Weber
authors.forename: T
authors.initials: T
authors.lastname: Yousry
authors.forename: U
authors.initials: U
authors.lastname: Fink
authors.forename: N
authors.initials: N
authors.lastname: Holzknecht
authors.forename: H J
authors.initials: HJ
authors.lastname: Steiger
authors.forename: M
authors.initials: M
authors.lastname: Reiser
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016477:Artifacts; D002533:Cerebral Angiography / Q000295:instrumentation / Q000379:methods*; D005069:Evaluation Studies as Topic; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000601:surgery*; D008875:Middle Aged; D019047:Phantoms, Imaging; D011184:Postoperative Period; D011300:Preoperative Care; D012680:Sensitivity and Specificity; D014025:Titanium; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*
chemical_list: D014025:Titanium