@article{7220,
  abstract     = {BACKGROUND:The introduction of image-guided methods to bypass surgery has resulted in optimized preoperative identification of the recipients and excellent patency rates. However, the recently presented methods have also been resource-consuming. In the present study, we have reported a cost-efficient planning workflow for extracranial-intracranial (EC-IC) revascularization combined with transdural indocyanine green videoangiography (tICG-VA). METHODS:We performed a retrospective review at a single tertiary referral center from 2011 to 2018. A novel software-derived workflow was applied for 25 of 92 bypass procedures during the study period. The precision and accuracy were assessed using tICG-VA identification of the cortical recipients and a comparison of the virtual and actual data. The data from a control group of 25 traditionally planned procedures were also matched. RESULTS:The intraoperative transfer time of the calculated coordinates averaged 0.8 minute (range, 0.4-1.9 minutes). The definitive recipients matched the targeted branches in 80%, and a neighboring branch was used in 16%. Our workflow led to a significant craniotomy size reduction in the study group compared with that in the control group (P = 0.005). tICG-VA was successfully applied in 19 cases. An average of 2 potential recipient arteries were identified transdurally, resulting in tailored durotomy and 3 craniotomy adjustments. Follow-up patency results were available for 49 bypass surgeries, comprising 54 grafts. The overall patency rate was 91% at a median follow-up period of 26 months. No significant difference was found in the patency rate between the study and control groups (P = 0.317). CONCLUSIONS:Our clinical results have validated the presented planning and surgical workflow and support the routine implementation of tICG-VA for recipient identification before durotomy.},
  author       = {Dodier, Philippe and Auzinger, Thomas and Mistelbauer, Gabriel and Wang, Wei Te and Ferraz-Leite, Heber and Gruber, Andreas and Marik, Wolfgang and Winter, Fabian and Fischer, Gerrit and Frischer, Josa M. and Bavinzski, Gerhard},
  issn         = {1878-8769},
  journal      = {World Neurosurgery},
  number       = {2},
  pages        = {e892--e902},
  publisher    = {Elsevier},
  title        = {{Novel software-derived workflow in extracranial–intracranial bypass surgery validated by transdural indocyanine green videoangiography}},
  doi          = {10.1016/j.wneu.2019.11.038},
  volume       = {134},
  year         = {2020},
}