Systems and Methods for Intra-Operative Image Analysis

摘要

A system and method that acquire (i) at least a reference image including one of a preoperative image of a surgical site with skeletal and articulating bones and a contralateral image on an opposite side of the patient from the surgical site, and (ii) at least an intraoperative image of the site after an implant has been affixed to the articulating bone. The system preferably generates at least one reference stationary point on at least the skeletal bone in the reference image and at least one intraoperative stationary point on at least the skeletal bone in the intraoperative image. The location of the implant is identified in the intraoperative image, preferably including the position of first and second centers of rotation, which are digitally represented and copied into the reference image to analyze at least one of offset and length differential.

主权项

1. A system to analyze images at a surgical site within a patient, the surgical site including at least a first, skeletal bone and a second, articulating bone that articulates with the skeletal bone at a joint, the system comprising:
an image selection module capable of acquiring (i) at least one reference image including one of a preoperative image of the surgical site and a contralateral image on an opposite side of the patient from the surgical site, and (ii) at least one intraoperative image of the site after an implant has been affixed to the articulating bone, the implant having at least a skeletal component with a first center of rotation and an articulating bone component having a second center of rotation, the first and second centers of rotation being co-located in the intraoperative image; a landmark identification module capable of receiving the reference and intraoperative images and generating at least one reference stationary point on at least the skeletal bone in the reference image and at least one intraoperative stationary point on at least the skeletal bone in the intraoperative image; a templating module capable of (a) identifying the location of the implant in the intraoperative image, including the position of the first and second centers of rotation, and aligning (i) at least a first digital implant representation with the skeletal component and with at least the intraoperative stationary point, and (ii) at least a second digital implant representation with the articulating bone component and at least one point on the articulating bone, and (b) copying the first and second digital representations and positioning them in the reference image in an equivalent location relative to at least the reference stationary point and the articulating bone to determine the position of the first and second centers of rotation relative to each other in the reference image; and an analysis module capable of utilizing any differences between the locations of the first and second centers of rotation in the reference image to analyze at least one of offset and length differential of at least one of the articulating bone and the implant in the intraoperative image.