Structured Light Physiological Sensing for Motion-Gated Medical Imaging
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Solution Overview
Problem
Current medical imaging devices face challenges in accurately detecting and compensating for breathing and heartbeat motion artifacts without the need for complex external motion monitoring devices, which are difficult to integrate with existing reconstruction algorithms.
Innovation Solution
A system and method utilizing a projection module to project structured light onto a target, an acquisition module to capture reflected light, and a processing module to determine physiological signals such as heartbeat and breathing, integrated within the medical imaging device to improve image clarity and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external motion monitoring devices are used to detect breathing and heartbeat motion, then motion information can be obtained for image reconstruction, but the system complexity increases and additional external devices are required
Solution Approach 1:
The patent combines the motion detection function with the existing medical imaging device by integrating a projection module and acquisition module into the same system. The projection module projects structured light onto the target, and the acquisition module captures the reflected light, allowing motion detection to be performed within the imaging device itself rather than requiring separate external monitoring devices.
Solution Approach 2:
The projection module and acquisition module serve multiple functions: they can detect motion information for gating purposes and also contribute to the overall imaging process. The structured light projection and reflection capture can be used for both motion analysis and imaging enhancement, making the system more versatile and reducing the need for dedicated separate devices.
2Manufacturing precision
If gated bin algorithm is used independently for motion compensation, then image artifacts caused by motion can be eliminated, but the algorithm is difficult to combine with other reconstruction algorithms and is limited to fixed scenarios
Solution Approach 1:
The patent implements a feedback mechanism where motion information detected by the projection and acquisition modules is continuously fed back to the processing module. This allows the system to dynamically adjust reconstruction parameters and combine the gated bin approach with other reconstruction algorithms, enhancing adaptability while maintaining image quality. The real-time motion feedback enables flexible integration with various reconstruction methods beyond fixed gated bin scenarios.
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
The system enhances imaging efficiency and accuracy by reducing artifacts caused by physiological motion, allowing for gated triggering and calibration based on detected signals, without the need for external devices, and simplifies the device structure.
Implementation Method 1
an acquisition module configured to acquire a reflected structured light formed by the structured light reaching the designated region
Data Source
AI summary
The embodiments of the present disclosure provide a system, a method, and a medical imaging device for acquiring a physiological signal of a target. The system may include a projection module configured to project a structured light to a designated region of the target; an acquisition module configured to acquire a reflected structured light formed by the structured light reaching the designated region; and a processing module configured to determine the physiological signal of the target based on the acquired reflected structured light.