Multi-Energy X-Ray Pulse Synchronization for Motion-Stable Imaging
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Solution Overview
Problem
Current x-ray imaging systems face challenges in achieving real-time multi-energy imaging due to limitations in fast switching between different energy levels, which can result in artifacts from patient or object motion and inadequate tissue/material separation in images.
Innovation Solution
The implementation of a customizable imaging system that includes a generator interface box (GIB) to control and synchronize x-ray sources and imagers, enabling rapid generation and detection of x-ray pulses at different energy levels, allowing for real-time dual-energy imaging by synchronizing x-ray pulses and image readout periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If fast switching between different energy levels is implemented, then real-time multi-energy imaging is achieved, but artifacts from patient or object motion occur
Solution Approach 1:
The system uses periodic pulsed x-ray emission at alternating energy levels (e.g., 80 kVp and 140 kVp) synchronized with the detector readout cycle. This periodic action allows the system to rapidly switch between energies while maintaining temporal coherence, reducing motion artifacts by completing the dual-energy acquisition within a single cardiac or respiratory cycle.
2Measurement precision
If sequential exposure to x-ray pulses of different energies is performed, then tissue/material separation is improved, but imaging time increases
Solution Approach 1:
The system maintains continuous imaging by overlapping the x-ray pulse sequences with the detector readout operation. Multiple x-ray pulses at different energies are delivered in rapid succession within each image frame, and the detector continuously reads out during this period. This eliminates idle time between exposures and maintains continuous useful action, achieving dual-energy separation without increasing total imaging time.
Solution Approach 2:
The system performs preliminary synchronization of the x-ray source and detector before actual imaging begins. The generator interface box pre-configures the timing parameters and energy levels, and the detector is pre-positioned and calibrated. This preliminary setup ensures that when imaging starts, the system is already optimized for rapid dual-energy acquisition, minimizing setup time and enabling immediate productive imaging.
3Adaptability or versatility
If a customizable module is added to control and synchronize components, then real-time imaging at different energy levels is enabled, but device complexity increases
Solution Approach 1:
The generator interface box serves multiple functions: it controls x-ray tube voltage and current, synchronizes detector readout, manages filter wheel positioning, and coordinates timing for multiple energy levels. By consolidating these diverse control functions into a single multi-functional device, the system achieves high adaptability for dual-energy imaging without proportionally increasing overall system complexity.
Solution Approach 2:
The system merges the x-ray source control, detector synchronization, and timing coordination functions into an integrated generator interface box. This consolidation combines multiple control subsystems into one unified device, reducing the number of separate components and interfaces. The merged architecture simplifies system integration while maintaining the versatility to operate at multiple energy levels with precise synchronization.
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
This approach enables improved visualization of specific features by combining images from different energy levels, reducing artifacts from motion and enhancing tissue/material separation, thereby producing clearer and more accurate composite images.
Implementation Method 1
The x-ray source can generate a series of individual x-ray pulses. The series can include at least a first x-ray pulse having a first energy level and a second x-ray pulse having a second energy level different from the first energy level.
Implementation Method 2
The x-ray imager is disposed so as to receive x-rays from the x-ray tube and to detect the received x-rays for image generation.
Data Source
AI summary
A system can have an x-ray source that generates a series of individual x-ray pulses for multi-energy imaging. A first x-ray pulse can have a first energy level and a subsequent second x-ray pulse in the series can have a second energy level different from the first energy level. An x-ray imager can receive the x-rays from the x-ray source and can detect the received x-rays for image generation. A generator interface box (GIB) controls the x-ray source to provide the series of individual x-ray pulses and synchronizes detection by the x-ray imager with generation of the individual x-ray pulses. The GIB can control x-ray pulse generation and synchronization to optimize image generation while minimizing unnecessary x-ray irradiation.