Automated assessment of glaucoma loss from optical coherence tomography
First Claim
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1. A method comprising:
- receiving a spectral-domain optical coherence tomography (SD-OCT) image;
determining a thickness of a macular ganglion cell layer (GCL) within at least one of one or more regions of interest of the SD-OCT image;
determining, for at least one of the one or more regions of interest, a set of correlations of the GCL thickness to each of a plurality of optic nerve head (ONH) regions;
selecting from the plurality of ONH regions, based on a highest correlation from among the set of correlations, an ONH region indicative of macular damage;
determining, for each of a plurality of nerve fiber bundle (NFB) regions within at least one of the one or more areas of interest, a connectivity path of the GCL to at least two nerve fiber bundle (NFB) segments within the NFB region; and
determining, for each NFB region, a path of a retinal ganglion cell-axonal complex (RGC-AC) segment with a highest cumulative correlation among all possible RGC-AC segment paths.
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Abstract
Systems and methods for assessing glaucoma loss using optical coherence topography. One method according to an aspect comprises receiving optical coherence image data and assessing functional glaucoma damage from retinal optical coherence image data. In an aspect, the systems and methods can map regions and layers of the eye to determine structural characteristics to compare to functional characteristics.
105 Citations
20 Claims
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1. A method comprising:
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receiving a spectral-domain optical coherence tomography (SD-OCT) image; determining a thickness of a macular ganglion cell layer (GCL) within at least one of one or more regions of interest of the SD-OCT image; determining, for at least one of the one or more regions of interest, a set of correlations of the GCL thickness to each of a plurality of optic nerve head (ONH) regions; selecting from the plurality of ONH regions, based on a highest correlation from among the set of correlations, an ONH region indicative of macular damage; determining, for each of a plurality of nerve fiber bundle (NFB) regions within at least one of the one or more areas of interest, a connectivity path of the GCL to at least two nerve fiber bundle (NFB) segments within the NFB region; and determining, for each NFB region, a path of a retinal ganglion cell-axonal complex (RGC-AC) segment with a highest cumulative correlation among all possible RGC-AC segment paths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system, comprising:
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a memory having computer-executable instructions encoded thereon; and at least one processor functionally coupled to the memory and configured, by the computer-executable instructions, to; receive a spectral-domain optical coherence tomography (SD-OCT) image; determine a thickness of a macular ganglion cell layer (GCL) within at least one of one or more regions of interest of the SD-OCT image; determine, for at least one of the one or more regions of interest, a set of correlations of the GCL thickness to each of a plurality of optic nerve head (ONH) regions; select from the plurality of ONH regions, based on a highest correlation from among the set of correlations, an ONH region indicative of macular damage; determine, for each of a plurality of nerve fiber bundle (NFB) regions within at least one of the one or more areas of interest, a connectivity path of the GCL to at least two nerve fiber bundle (NFB) segments within the NFB region; and determine, for each NFB region, a path of a retinal ganglion cell-axonal complex (RGC-AC) segment with a highest cumulative correlation among all possible RGC-AC segment paths. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification