title: Optical Coherence Tomography Angiography of Idiopathic Polypoidal Choroidal Vasculopathy.
abstract: OBJECTIVE
  To analyze the morphological characteristics of polypoidal choroidal vasculopathy (PCV) on optical coherence tomography angiography (OCT-A).
  
  
  METHODS
  Consecutive patients with PCV underwent complete ophthalmological examination, including fundus photography, fluorescein angiography, indocyanine green angiography, spectral-domain OCT and OCT-A.
  
  
  RESULTS
  Segmentation of the choriocapillaris layer on OCT-A revealed the branching vascular network as a hyper-flow lesion, and it revealed the polypoidal lesion as a hyper-flow round structure surrounded by a hypo-intense halo in some cases and as a hypo-flow round structure in most cases.
  
  
  CONCLUSIONS
  OCT-A is a noninvasive imaging modality that allows for the visualization of different structures in PCV. The branching vascular network is consistently and clearly detected. The hypo-flow round appearance of the polyps on OCT-A is probably due to unusual blood flow inside of the polypoidal lesions, in contrast with the branching vascular network. Further improvements in OCT-A knowledge will provide information on the specificity of the different intensity characteristics in PCV.
authors.forename: Mayer
authors.initials: M
authors.lastname: Srour
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Querques
authors.forename: Eric H
authors.initials: EH
authors.lastname: Souied
mesh_terms: D000792:Angiography / Q000379:methods*; D002829:Choroid / Q000098:blood supply / Q000000981:diagnostic imaging; D020256:Choroidal Neovascularization / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005451:Fluorescein Angiography; D006801:Humans; D064847:Multimodal Imaging; D011127:Polyps / Q000000981:diagnostic imaging* / Q000503:physiopathology; D012039:Regional Blood Flow; D041623:Tomography, Optical Coherence / Q000379:methods*