SYSTEM AND METHOD FOR REGISTERING A STRUCTURE USING FIBER-OPTICAL REALSHAPE DATA

摘要

A system and method for registering a structure (104) of a subject (103) to a coordinate system which includes a deformable registration device (102) having a deformable body (105) that features an optical fiber (108). A FORS system (110) measures a shape of the optical fiber when the deformable body contacts the structure of the subject to obtain positional points (106) for the structure. A pre-processing module (112) analyzes the positional points and determines which positional points are on-surface and off-surface points with respect to the structure. A registration module (118) deletes the off-surface positional points and registers the device to the structure using the on-surface positional points. Positional points (142) from a shape (137) generated on a model which approximates points that would be measured by the deformable registration device of the structure may be combined with the positional points (106) acquired from the deformable body to provide an improved registration.