Methods for mapping tissue with optical coherence tomography data
AssigneeCarl Zeiss Meditec AG
InventorsMatthew J. Everett, Paul F. Stetson, Scott A. Meyer, Shahram Shawn Dastmalchi
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Abstract
Various methods are disclosed for mapping optical coherence tomography (OCT) data to facilitate review and diagnosis. In one aspect, high resolution 2D line scans are obtained along with lower density 3D cube scans and displayed in a manner to provide context to the clinician. In another aspect, OCT data is analyzed to provide information about non-uniformities of the tissue. Binary image maps of maps useful for determining tautness of membranes are also disclosed.
Claims40
A method of displaying information based on 3-D image data of an eye acquired by an optical coherence tomography (OCT) system comprising the steps of:
- identifying a surface within the image data generated from the OCT system;
- identifying deviations in the surface and assigning a value to the extent of the deviations, said deviations corresponding to non-uniformities in the surface;
- and
- displaying a map of the determined deviation values to illustrate non-uniformities within the eye.
A method of displaying information based on 3-D image data of an eye acquired by an optical coherence tomography (OCT) system comprising the steps of:
- comparing image data generated from the OCT system to a threshold;
- and
- displaying a binary map of the image data wherein points that exceed the threshold are displayed in one format and points that are below the threshold are displayed in a second format.
A method of displaying information based on 3-D image data of an eye acquired by an optical coherence tomography (OCT) system comprising the steps of:
- generating an elevational map of a tissue layer or boundary based on the image data generated from the OCT system;
- comparing the information in the elevational map image data to a threshold;
- and
- displaying a binary map wherein points in the elevational map that exceed the threshold are displayed in one format and points that are below the threshold are displayed in a second format.
A method of displaying information based on 3-D image data of an eye acquired by an optical coherence tomography (OCT) system comprising the steps of:
- identifying two surfaces within the image data generated from the OCT system;
- identifying deviations to one of the volume or distance between the two surfaces and assigning a value to the extent of the deviations, said deviations corresponding to non-uniformities in the region between the surfaces;
- and
- displaying a map of the determined deviation values.
Dependencies are inferred from the claim text.