July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
Comparing swept source OCT choroidal vasculography (CVG) to conventional ICG Angiography for visualizing the morphological structures of the choroidal vasculature
Author Affiliations & Notes
  • Carl G O Glittenberg
    Topcon Europe Medical, Capelle an den Ijssel, Netherlands
    Karl Landsteiner Institute for Retinal Research and Imaging, Vienna, Austria
  • Footnotes
    Commercial Relationships   Carl Glittenberg, Topcon (E)
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 2878. doi:
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    • Get Citation

      Carl G O Glittenberg; Comparing swept source OCT choroidal vasculography (CVG) to conventional ICG Angiography for visualizing the morphological structures of the choroidal vasculature. Invest. Ophthalmol. Vis. Sci. 2018;59(9):2878.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : To compare the choroidal vascular structures seen in ICG angiography to the vascular structures seen in swept source choroidal vasculography (CVG).

Methods : Fluorescein(FA) and ICG angiography images were collected using a conventional SLO based instrument. 9mm x 9mm OCT-A scans were collected using a Topcon® DRI Swept Source OCT. The structural data in the OCT-A data sets was inverted and displayed using a 26 micron Bruchs’s membrane fit slab which can be manually adjusted in depth. The resulting choroidal vasculography (CVG) was compared to the ICG images collected using the conventional angiography method.

Results : 20 eyes of 10 consecutive patients with variable pathologies were retrospectically examined. In all cases we were able to visualize the morphology of the choroidal vascular structure using CVG. This corresponded to the morphology seen in the ICG images. In comparison to ICG, the information on the morphology of the vessels was depth encoded, allowing a better understanding of the location of different vessel layers in the choroid. It was not possible to visualize leakage in the CVG.

Conclusions : ICG angiography is an invasive, time consuming, potentially dangerous examination method. CVG takes only seconds to acquire, is noninvasive and can provide similar information about the morphological structure of the choroidal vasculature. Additionally CVG has the advantage of showing depth information. CVG does not show leakage, which is a limitation which is similar to that of OCT-A. To verify the clinical usefulbness of this method, a larger scale study is needed.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

 

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