Hybrid X-Ray Imaging for Depth Tracking and Radiation Reduction
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Solution Overview
Problem
Conventional fluoroscopic imaging systems for medical procedures face challenges such as limited flexibility in positioning, obscured visibility due to poor contrast and angle issues, and lack of depth information, which complicates the tracking of catheters and contrast agents during interventional procedures.
Innovation Solution
A portable imaging apparatus capable of switching between 2-D fluoroscopic and tomosynthesis imaging modes without repositioning the x-ray sources and detector, using an array of x-ray sources that can be energized from multiple positions to provide both real-time fluoroscopic and depth imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional C-arm fluoroscopy systems are used, then real-time 2-D imaging is provided, but depth information is lacking and source-detector repositioning is required
Solution Approach 1:
The system transitions from 2-D fluoroscopic imaging to 3-D tomosynthesis imaging by acquiring multiple images at different source positions and reconstructing depth information through computational processing, eliminating the need for physical repositioning of the C-arm
Solution Approach 2:
The patent replaces the mechanical repositioning of the C-arm with a computational approach, using multiple fixed or movable x-ray sources and digital image processing to generate depth information through tomosynthesis reconstruction algorithms
2Measurement precision
If multiple x-ray sources are used for tomosynthesis, then depth imaging capability is improved, but device complexity increases
Solution Approach 1:
The system divides the imaging function into multiple x-ray sources positioned at different locations, each contributing to specific angular views, allowing parallel acquisition of tomosynthesis data without requiring sequential C-arm rotations
Solution Approach 2:
The multiple x-ray sources serve dual purposes: they can be individually activated for fluoroscopic imaging or collectively activated for tomosynthesis imaging, providing multi-functionality without requiring separate dedicated systems
3Speed
If continuous fluoroscopic imaging is performed, then real-time tracking is achieved, but radiation exposure increases
Solution Approach 1:
The system uses intermittent fluoroscopic imaging combined with periodic tomosynthesis acquisitions, reducing continuous radiation exposure while maintaining real-time tracking capability through strategic timing of imaging sequences
Solution Approach 2:
The system dynamically adjusts imaging parameters such as frame rate, exposure duration, and source activation patterns based on procedural needs, optimizing the balance between real-time visualization and radiation dose reduction
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables improved visualization and tracking of medical procedures with reduced radiation exposure and faster procedure times, allowing for more precise guidance and reduced contrast agent usage.
Implementation Method 1
an x-ray assembly configured to be energizable to emit ionizing radiation from one or multiple different spatial positions toward an imaging region of a patient
Implementation Method 2
A portable imaging apparatus capable of switching between 2-D fluoroscopic and tomosynthesis imaging modes
Data Source
AI summary
An imaging system includes an x-ray assembly having one or more x-ray sources configured to be energized at multiple positions. A control program energizes the one or more x-ray sources in a programmed sequence and controls the timing of the sequence.