Intraoperative registration method for correcting preoperative three-dimensional image and device

Abstract

The invention provides an intraoperative registration device for correcting a preoperative three-dimensional image and a method; a pretreatment module is used for collecting preoperative spiral CT (Computed Tomography) image data of a patient and pretreating the CT image data; a bone mass partitioning and separating module uses an improved three-dimensional seed filling algorithm to obtain interested bone tissues according to the pretreated CT image data and realizes partition and separation of a bone mass in the preoperative CT image data; an X-ray image collecting module is used for adjusting the posture of preoperative position of a patient and collecting X-ray images of the patient at different angles during operation and before operation; a registration module obtains DRR images withthe same angle, finishes registration operation on the X-ray images with corresponding angles before operation and during operation and obtains a transformation matrix of each separated bone mass tissue; a 3D bone interested region model establishing module is used for leading the multi-angle transformation matrix to act on a preoperative partitioned and separated bone mass data model and obtaining the real position of each bone mass model during operation.

Description

technical field [0001] The present invention relates to the technical field of virtual surgery, and more specifically, the present invention relates to an intraoperative registration method and device for correcting preoperative three-dimensional images. Background technique [0002] The complexity of modern surgery and the continuous improvement of medical safety standards, preoperative diagnosis, planning and pre-operative simulation drills through virtual surgery to improve the accuracy of disease diagnosis and treatment have become the current trend of surgical development. At present, the technology of image-assisted surgery has been gradually applied in the field of surgery, but changes in the fracture site or body position of the human body during surgery often change the bone position or fracture position, so that there are often differences between the image data collected before the operation and the actual situation during the operation , so assisted surgery based...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of the existing intraoperative and preoperative image registration errors and high equipment environment requirements, the present invention proposes an intraoperative registration method and device for correcting preoperative 3D images

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