公开(公告)号：US20240027180A1

公开(公告)日：2024-01-25

申请号：US18354096

申请日：2023-07-18

Applicant: Alcon Inc.

Inventor： Wei Wei ,  Parisa Rabbani ,  Sahar Hosseinzadeh Kassani ,  Qiang Li ,  Lance Noller

IPC: G01B9/02055 ,  A61B3/10 ,  A61B90/20 ,  G01B9/02091

CPC classification number: G01B9/02072 ,  A61B3/102 ,  A61B90/20 ,  G01B9/02091

Abstract: An imaging system includes a housing assembly having a head unit configured to be at least partially directed towards a target site. An optical coherence tomography (OCT) module and a visualization module are located in the housing assembly and configured to respectively obtain OCT data and visualization data of the target site. The system includes a controller configured to generate a scanning pattern for a region of calibration selected in a calibration target. OCT data of the region of calibration is synchronously acquired. The controller is configured to obtain a projected two-dimensional OCT image of the region of calibration based on the OCT data, as an inverse mean-intensity projection. The controller is configured to register the projected two-dimensional OCT image to a corresponding view extracted from the visualization data, via a cascaded image registration process having a coarse registration stage and a fine registration stage.