A Framework for Multiscale Quantitation of Relationships Between Choriocapillaris Flow Impairment and Geographic Atrophy Growth.

ABSTRACT:

Purpose

To develop a multiscale analysis framework for investigating the relationships between geographic atrophy (GA) growth rate and choriocapillaris (CC) blood flow impairment using optical coherence tomography (OCT) and OCT angiography (OCTA).

Design

Retrospective case series.

Methods

We developed an OCT/OCTA analysis framework that quantitatively measures GA growth rates at global and local scales and CC impairment at global, zonal, and local scales. A geometric GA growth model was used to measure local GA growth rates. The utility of the framework was demonstrated on 7 eyes with GA imaged at 2 time points using a prototype 400-kHz, 1050-nm swept-source OCTA system.

Results

Qualitatively, there was a trend of increasing GA growth rate with increasing CC im

SUBMITTER: Moult EM 

PROVIDER: S-EPMC7951042 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature