Preoperative three-dimensional CT registration method based on single X-ray image

By using a single-view CT reconstruction network in CT registration, converting X-ray images into three-dimensional CT, and combining ICP algorithm for three-dimensional spatial registration, the problem of insufficient two-dimensional spatial matching accuracy in the existing technology is solved, and the sub-millimeter-level CT registration accuracy and operation simplification are achieved.

CN119693424AActive Publication Date: 2025-03-25DALIAN UNIV OF TECH
6 Cites 2 Cited by

Patent Information

Application Number
CN202510194940.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-21
Publication Date
2025-03-25
Estimated Expiration
2045-02-21

AI Technical Summary

Technical Problem

The existing CT registration methods match X-ray images and DRR images in two-dimensional space, resulting in insufficient registration accuracy in three-dimensional space, especially affected by the overlap of complex anatomical structures and tissues of the human body, and are susceptible to artifacts and noise interference.

Method used

The network is reconstructed by a single-view CT based on a single X-ray image, converting two-dimensional X-ray images into three-dimensional CT, and CT registration is performed in three-dimensional space using the ICP algorithm, which solves the problem of dimension mismatch and improves the registration accuracy.

Benefits of technology

High-precision CT registration in three-dimensional space is achieved, with the accuracy improved to the submillimeter level, simplified the operation process, and is especially suitable for the precise positioning of anatomical structures in spinal orthopedic surgery.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention belongs to the field of medical imaging and artificial intelligence, and discloses a preoperative three-dimensional CT registration method based on a single X-ray image. According to the method, the CT of the current pose of the patient is recovered by using an X-ray image, and then CT registration in a three-dimensional space is performed by using the recovered CT and the preoperative CT, so that the problem of dimension mismatching in a previous registration method is solved. The invention provides a single-view-angle CT reconstruction network which is used for converting a two-dimensional X-ray image into a three-dimensional CT, and then registration of the CT generated by the network and the preoperative CT is realized by using an ICP (Inductively Coupled Plasma) algorithm. The CT registration in the three-dimensional space is realized only by using the X-ray image, the CT registration precision is effectively improved, the submillimeter-level CT registration is realized, the position of the anatomical structure of a patient can be accurately determined especially in the spine orthopedic surgery, and doctors are helped to accurately and efficiently implement the surgery.
Need to check novelty before this filing date? Find Prior Art