title: Predicting procedure successful rate and 1-year patency after endovascular recanalization for chronic carotid artery occlusion by CT angiography.
abstract: BACKGROUND
  Proper patient selection criteria for treatment of carotid chronic total occlusion (CTO) are unclear. This study was designed to predict procedure successful rate and 1-year patency after carotid artery stenting (CAS) for carotid CTO using pre-procedural CTA.
  
  
  METHODS
  Patients with CTO detected on CTA who underwent recanalization within 3months were divided into those with occlusions at (or distal to) the clinoid segment of the internal carotid artery (group A) and those with occlusions proximal to the clinoid segment (group B) and outcomes were compared between groups.
  
  
  RESULTS
  Technical success rates, major complications, and re-occlusions within 1-year were 52%, 22%, 91% in group A (N=23), and 89%, 0%, 0% in group B (N=19), respectively. Diabetes was more frequent in group A (43%) compared with group B (11%).
  
  
  CONCLUSIONS
  CTA may play a role in predicting successful rate and 1-year patency for endovascular recanalization in carotid CTO.
authors.affiliation: Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan; Department of Medical Imaging and Radiology, Hospital and Medical College, National Taiwan University, Taipei, Taiwan.
authors.forename: Chung-Wei
authors.initials: CW
authors.lastname: Lee
authors.affiliation: Department of Medical Imaging and Radiology, Hospital and Medical College, National Taiwan University, Taipei, Taiwan.
authors.forename: Yen-Heng
authors.initials: YH
authors.lastname: Lin
authors.affiliation: Department of Medical Imaging and Radiology, Hospital and Medical College, National Taiwan University, Taipei, Taiwan. Electronic address: hmliu@ntu.edu.tw.
authors.forename: Hon-Man
authors.initials: HM
authors.lastname: Liu
authors.affiliation: Department of Medical Imaging and Radiology, Hospital and Medical College, National Taiwan University, Taipei, Taiwan.
authors.forename: Yu-Fen
authors.initials: YF
authors.lastname: Wang
authors.affiliation: Department of Medical Imaging and Radiology, Hospital and Medical College, National Taiwan University, Taipei, Taiwan.
authors.forename: Ya-Fang
authors.initials: YF
authors.lastname: Chen
authors.affiliation: Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan.
authors.forename: Jaw-Lin
authors.initials: JL
authors.lastname: Wang
mesh_terms: D000368:Aged; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging* / Q000601:surgery*; D016893:Carotid Stenosis / Q000000981:diagnostic imaging* / Q000601:surgery*; D002908:Chronic Disease; D000072226:Computed Tomography Angiography / Q000639:trends*; D057510:Endovascular Procedures / Q000639:trends*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D015607:Stents / Q000639:trends; D013997:Time Factors; D016896:Treatment Outcome; D014654:Vascular Patency / Q000502:physiology
keywords: CT angiography; Carotid artery stenting; Chronic carotid artery occlusion; Chronic total occlusion; Endovascular recanalization