Digital subtraction indocyanine green angiography of occult choroidal neovascularization

Ophthalmology
R F SpaideJ A Sorenson

Abstract

This study aimed to use a new technique for ocular imaging, digital subtraction indocyanine green angiography (DS-ICGA), to evaluate patients with occult choroidal neovascularization (CNV). The design was a cross-sectional study of patients with occult CNV. A total of 31 eyes of 31 patients were studied. Digital subtraction of sequentially acquired indocyanine green angiographic frames was used to image the progression of the dye front in eyes with occult CNV. A method of pseudocolor imaging of the choroid was developed that allows differentiation and identification of underlying choroidal arteries and veins. The DS-ICGA of occult CNV showed consistent findings. Occult CNV was imaged with greater detail and in a shorter period of time than with conventional indocyanine green angiography. The fundus landmarks were retained with DS-ICGA much better than with conventional indocyanine green angiography. The DS-ICGA uses time to dissect the choroidal circulation. With DS-ICGA, occult CNV could be imaged more quickly and in greater detail than with conventional imaging techniques. The DS-ICGA may improve the authors ability to image, and subsequently treat, occult CNV.

Citations

Apr 7, 1999·Progress in Retinal and Eye Research·R KleinK J Cruickshanks
Apr 25, 2006·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Ian N McRitchieR John Winder
May 29, 2010·Ophthalmic Surgery, Lasers & Imaging : the Official Journal of the International Society for Imaging in the Eye·Lee-Jen Chen, Shu-I Yeh
Mar 15, 2018·Personality and Social Psychology Review : an Official Journal of the Society for Personality and Social Psychology, Inc·Michael DufnerJaap J A Denissen
May 25, 2021·Progress in Retinal and Eye Research·Richard F SpaidePeter M Maloca
Jul 16, 2021·Retina·Chui Ming Gemmy CheungRichard F Spaide

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