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US 11,998,272 B2Granted
Post-processing method to improve LSO-based tracking in oct
AssigneeCarl Zeiss Meditec AG
InventorsLuis De Sisternes, Patrick Krawec, Simon Bello, Sophie Kubach
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Abstract
After OCT scans are acquired, error compensation is be applied anew by identifying motion tracking data that was collected simultaneously with (or closest in time to) each acquired OCT scan. The effects of any previously applied motion tracking information is removed from an OCT scan before applying the new motion tracking data, which may provide higher resolution motion tracking.
Claims21
A method for motion correction in an optical coherence tomography (OCT) system, comprising:
- collecting motion-tracking data associated with the eye of a patient, each collected motion-tracking datum having a respective motion-tracking sequence indicator;
- concurrent with the collecting of motion-tracking data, acquiring a plurality of OCT scans of the eye, each acquired OCT scan having a respective OCT scan sequence indicator;
- matching acquired OCT scans to collected motion-tracking data based on their respective OCT scan sequence indicator and motion-tracking sequence indicator;
- and
- correcting for displacement error in the acquired OCT scans based on their matched motion-tracking data;
- and
- storing or displaying the displacement-corrected OCT scans.
4 more elements
An optical coherence tomography (OCT) system, comprising:
- a line scan ophthalmoscope (LSO) for collecting motion-tracking data, each collected motion-tracking datum having a respective motion-tracking sequence indicator;
- an OCT scanner for, concurrent with the collecting of motion-tracking data, acquiring a plurality of OCT scans, each OCT scan having a respective OCT scan sequence indicator;
- a data processing device for matching acquired OCT scans to collected motion-tracking data based on their respective OCT scan sequence indicators and motion-tracking sequence indicators, and for correcting for displacement error in the acquired OCT scans based on their matched motion-tracking data;
- and
- a display for displaying the displacement-corrected OCT scans.
2 more elements
Dependencies are inferred from the claim text.