3D Marker Overlay on C-Arm Projection Images
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Solution Overview
Problem
Current medical imaging technologies, such as C-arm systems, cannot provide real-time three-dimensional images during surgical interventions, leading to a lack of spatial information in two-dimensional projection images, making it difficult for surgeons to orient themselves and register preoperative 3D images with intraoperative projections.
Innovation Solution
A method and device that record two projection images from different angles, determine a position marker, calculate its three-dimensional position, and superimpose it on subsequent images, allowing for enhanced spatial orientation and registration of structures during interventions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two-dimensional projection images are used during surgical interventions, then real-time imaging is available, but spatial information and depth details are lost
Solution Approach 1:
The patent transforms two-dimensional projection images into three-dimensional spatial information by calculating the position of markers in 3D space based on their locations in multiple projection images. This allows the system to maintain real-time 2D imaging capability while adding 3D spatial context through mathematical calculation of marker positions across different projection angles.
2Ease of operation
If preoperatively recorded three-dimensional images are viewed with intraoperative projection images, then spatial orientation is improved, but the structures are not visible in the preoperative 3D images and registration is difficult
Solution Approach 1:
The patent performs preliminary actions by recording projection images from multiple directions before the surgical intervention and calculating the three-dimensional positions of markers in advance. These pre-calculated 3D positions are then overlaid on intraoperative images, enabling the surgeon to orient themselves in 3D space while maintaining visibility of current structures through the overlayed markers.
3Loss of information
If multiple projection images are recorded from different angles, then spatial information is obtained, but the complexity of the imaging system increases
Solution Approach 1:
The patent makes the image recording system multi-functional by enabling it to serve both as a 2D projection imaging device and as a 3D spatial mapping device. The same C-arm system that captures 2D images is used to acquire multiple projection images from different angles, which are then processed to calculate 3D marker positions, eliminating the need for separate 3D imaging equipment.
Data Source
AI summary
The invention relates to a method and a device for marking three-dimensional structures on two-dimensional projection images of an object, with which a position marker is determined on two projection images of the object recorded from different projection directions, from which the position of the position marker in the three-dimensional space is calculated so that further, subsequently recorded projection images can be displayed superimposed by the position marker.