Three-dimensional correction reconstruction method of rotary C-arm X-ray generator

Abstract

The invention discloses a three-dimensional correction reconstruction method of a rotary C-arm X-ray generator. The three-dimensional correction reconstruction method comprises the following steps that a correction die body is placed in a scanning area of the rotary C-arm X-ray generator; rotary scanning is conducted on the correction die body through the rotary C-arm X-ray generator so as to obtain a projected image sequence of the correction die body; according to projected images of the correction die body, the projection positions of steel balls are marked automatically, and the inclination angle and the central-point offset of each projected image of the correction die body are calculated; after the inclination angles and the central-point offsets are obtained, inclination correction and central-point offset correction are conducted on the projected images obtained through normal scanning of the rotary C-arm X-ray generator; by means of the FDK reconstruction algorithm, three-dimensional reconstruction is conducted on the corrected projected images. According to the three-dimensional correction reconstruction method, the projected-image correction method is used so that geometric scanning parameters of the rotary C-arm X-ray generator can be obtained rapidly and stably, and three-dimensional scanning supporting three-dimensional volume data reconstruction is completed.

Description

technical field [0001] The invention belongs to the field of medical equipment, in particular to a method for three-dimensional correction and reconstruction of a rotating C-arm X-ray machine. Background technique [0002] Rotating C-arm X-ray machine, referred to as C-arm X-ray machine or C-arm machine, is one of the large-scale medical equipment commonly used in hospitals at present. It can perform real-time imaging during surgery, and can help doctors make timely diagnosis and monitor surgical conditions during surgery. . Through this device, doctors can provide a complete and accurate observation of the internal structure, shape and movement mode of the inspection site from multiple angles. It is widely used in orthopedics, surgery, gynecology and other treatment fields. The traditional C-arm machine can only provide multi-view image sequences, and the visualization of three-dimensional structures is an important topic in the current clinical field. With the help of CT...

AI Technical Summary

Problems solved by technology

With the help of CT image three-dimensional reconstruction technology, it provides technical support for the three-dimensional visualization of the image sequence acquired by the C-arm machine. However, due to the limitations of mechanical design and actual acquisition conditions, the acquisition process of the C-arm machine does not meet the requirements of CT reconstruction. Therefore, the acquisition image sequence Cannot be directly used for 3D reconstruction

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