title: Indocyanine green videoangiography methodological variations: review.
abstract: Indocyanine green videoangiography (ICGVA) procedures have become widespread within the spectrum of microsurgical techniques for neurovascular pathologies. We have conducted a review to identify and assess the impact of all of the methodological variations of conventional ICGVA applied in the field of neurovascular pathology that have been published to date in the English literature. A total of 18 studies were included in this review, identifying four primary methodological variants compared to conventional ICGVA: techniques based on the transient occlusion, intra-arterial ICG administration via catheters, use of endoscope system with a filter to collect florescence of ICG, and quantitative fluorescence analysis. These variants offer some possibilities for resolving the limitations of the conventional technique (first, the vascular structure to be analyzed must be exposed and second, vascular filling with ICG follows an additive pattern) and allow qualitatively superior information to be obtained during surgery. Advantages and disadvantages of each procedure are discussed. More case studies with a greater number of patients are needed to compare the different procedures with their gold standard, in order to establish these results consistently.
authors.affiliation: Neurosurgical Department, HUyP La Fe de Valencia, Blv Sur, S/N, Valencia, Spain, juanantonio.simal@gmail.com.
authors.forename: Juan A
authors.initials: JA
authors.lastname: Simal-Julián
authors.forename: Pablo
authors.initials: P
authors.lastname: Miranda-Lloret
authors.forename: Rocio
authors.initials: R
authors.lastname: Evangelista-Zamora
authors.forename: Pablo
authors.initials: P
authors.lastname: Sanromán-Álvarez
authors.forename: Laila
authors.initials: L
authors.lastname: Pérez de San Román
authors.forename: Pedro
authors.initials: P
authors.lastname: Pérez-Borredá
authors.forename: Andrés
authors.initials: A
authors.lastname: Beltrán-Giner
authors.forename: Carlos
authors.initials: C
authors.lastname: Botella-Asunción
mesh_terms: D015901:Angiography, Digital Subtraction / Q000379:methods; D002533:Cerebral Angiography / Q000379:methods; D004396:Coloring Agents; D006801:Humans; D007208:Indocyanine Green; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000601:surgery; D016343:Monitoring, Intraoperative / Q000379:methods
chemical_list: D004396:Coloring Agents; D007208:Indocyanine Green