Dynamic CT–X-Ray Fusion Using Automatic MPR Slice Selection
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Solution Overview
Problem
Conventional methods for integrating X-ray and CT/CBCT/MRI images require complex preparation of CT image data using a 3D viewer, demanding detailed user knowledge and posing challenges in selecting, extracting, and displaying relevant information, especially for dynamic CT images and therapy plans, which disrupt the workflow of interventional procedures.
Innovation Solution
A method that integrates CT/CBCT image data directly with X-ray images without using a 3D viewer, employing multi-plane reformation and maximum intensity projection tools, enabling direct display of therapy plans and dynamic CT models on X-ray images, allowing seamless integration during interventional procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to integrate X-ray and CT images, then image integration is achieved, but complex preparation of CT image data using a 3D viewer is required, demanding detailed user knowledge and disrupting workflow
Solution Approach 1:
The patent extracts the CT image data processing from the complex 3D viewer environment and integrates it directly into the 2D X-ray imaging workflow. By using 2D orthogonal planar reformation tools within the existing X-ray system, the method eliminates the need to switch to a separate 3D viewer, thereby maintaining workflow continuity while achieving accurate image integration through direct overlay of reformatted CT slices on live X-ray fluoroscopy images
Solution Approach 2:
The patent makes the X-ray imaging system multi-functional by enabling it to perform both traditional X-ray fluoroscopy and CT image processing/display functions. The system can acquire 3D CT data, reformat it into 2D orthogonal planes, and overlay it on live X-ray images without requiring separate specialized equipment or software, thus improving ease of operation while maintaining reliable image integration
2Reliability
If conventional methods are used to integrate X-ray and CT images, then image integration is achieved, but detailed user knowledge is demanded for selecting and extracting relevant information
Solution Approach 1:
The patent implements self-service by enabling the system to automatically acquire 3D CT data and process it through 2D orthogonal planar reformation without requiring user intervention for complex 3D manipulations. The system autonomously reformats CT slices into 2D planes that align with the X-ray fluoroscopy view, eliminating the need for users to possess detailed knowledge of 3D image processing while ensuring accurate integration through systematic automated processing
3Loss of information
If 3D viewer is used for preparing CT image data, then comprehensive 3D analysis is possible, but seamless integration during interventional procedures is disrupted
Solution Approach 1:
The patent segments the 3D CT data into 2D orthogonal planar slices that can be individually reformatted and selectively overlaid on the 2D X-ray fluoroscopy images. This segmentation allows the system to present relevant anatomical information in a 2D format that matches the interventional workflow, maintaining procedural efficiency while preserving access to comprehensive 3D image information through the ability to generate and display multiple orthogonal planes as needed
Data Source
AI summary
Various methods and systems are provided for generating a fused image that includes image data captured by a first imaging system and a second imaging system, different from the first imaging system. For example, the method comprises; obtaining three-dimensional (3D) image data of an anatomical region of interest (ROI) of a patient; applying a multi-plane reformation (MPR) tool to the 3D image data to automatically select a slice of the 3D image data that includes the anatomical ROI and corresponds to a view of the anatomical ROI that is shown in a live x-ray image data; fusing the 3D image data with the live x-ray image data without use of a 3D viewer to generate a fused live image comprising 3D image data and live x-ray image data of the anatomical ROI; and outputting the fused live image for display and/or storage.