OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY METHODS

摘要

Methods of applying OCT angiography are disclosed. In particular, methods of detecting, visualizing and measuring the extent of retinal neovascularization are disclosed. Further disclosed are methods measuring retinal nonperfusion area and choriocapillaris defect area.

主权项

1. A method of measuring a nonperfusion area, the method comprising:
receiving a set of cross sectional OCT angiograms; generating an en face inner retina angiogram or an en face choriocapillaris angiogram; identifying a set of pixels in the en face inner retina angiogram or the en face choriocapillaris angiogram wherein the pixels have decorrelation values less than a cutoff point, thereby generating a nonperfusion map; identifying nonperfusion areas with an area below a defined number of pixels; summing the pixels in the nonperfusion areas, thereby measuring a retinal nonperfusion area.