title: [Efficacy of indocyanine green videoangiography for carotid endarterectomy].
abstract: OBJECTIVE
  The aim of the present study is to assess whether the technique of surgical microscope-based indocyanine green videoangiography (ICG-VA) and the FLOW800 system are efficient for hemodynamic evaluation during carotid endarterectomy (CEA).
  
  
  METHODS
  20 CEAs for 19 patients were performed from January to July 2011. Before and after endarterectomy, ICG was injected intravenously. After the procedure, ICG-VA was analyzed by FLOW800. Regions of interest were the common carotid artery, the plaque, the internal carotid artery, and the external carotid artery to evaluate changes in each intensity value.
  
  
  RESULTS
  The distal end of carotid plaque and the proximal end were identified in 85% of CEAs and 78.9% of cases. In 5 cases (26.3%) with more severe stenosis (>90%), the decrease of blood flow intensity in the internal carotid artery was delayed before endarterectomy. After endarterectomy, the finding was improved in all the 5 cases. After the endarterectomy, the intensity values in the common carotid artery, the plaque, the internal carotid artery, and the external carotid artery had increased 162 ± 129, 337 ± 212, 139 ± 151 and 177 ± 143. Especially in the value of the plaque, there was a great improvement.
  
  
  CONCLUSIONS
  ICG-VA provides information of the plaque location and the patency of the arterial vessel during CEA. Using FLOW800, semiquantitive information of hemodynamics was able to be acquired, especially for the case of severe stenosis with collapse of the internal carotid artery.
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Japan.
authors.forename: Masakazu
authors.initials: M
authors.lastname: Okawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Abe
authors.forename: Toshiyasu
authors.initials: T
authors.lastname: Ogata
authors.forename: Masaru
authors.initials: M
authors.lastname: Nonaka
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Ueba
authors.forename: Toshio
authors.initials: T
authors.lastname: Higashi
authors.forename: Tooru
authors.initials: T
authors.lastname: Inoue
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography / Q000295:instrumentation / Q000379:methods*; D016893:Carotid Stenosis / Q000000981:diagnostic imaging / Q000601:surgery; D004396:Coloring Agents; D016894:Endarterectomy, Carotid / Q000379:methods*; D005260:Female; D006801:Humans; D007208:Indocyanine Green; D008297:Male; D008875:Middle Aged; D014741:Video Recording
chemical_list: D004396:Coloring Agents; D007208:Indocyanine Green