Scattered X-Ray Detection for Accurate Image Timestamping
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Solution Overview
Problem
Existing imaging systems in catheterization laboratories lack accurate real-time detection of x-ray radiation pulses, leading to inconsistencies in image tagging and co-registration with other modalities, and require user confirmation for sequence start/end, which can disrupt workflows.
Innovation Solution
An x-ray detection device that detects scattered radiation to generate temporal data for precise image tagging, synchronizes with host devices, and provides real-time feedback for improved co-registration and automated workflows, without occluding the beam source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user confirmation is required for sequence start/end, then operational accuracy is improved, but workflow efficiency deteriorates
Solution Approach 1:
The imaging system automatically detects radiation pulses and timestamps images without requiring user confirmation. The system self-regulates the imaging sequence by monitoring radiation emission and autonomously tagging images with accurate temporal data, eliminating manual intervention while maintaining operational accuracy
Solution Approach 2:
The system implements real-time feedback by detecting scattered radiation and using this information to automatically timestamp images. The feedback loop between radiation detection and image tagging enables the system to self-correct and maintain accurate temporal synchronization without user input
2Device complexity
If image tagging is based on frame grab time, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent introduces an intermediary radiation detection device that acts as a mediator between the x-ray source and the imaging system. This intermediary detects scattered radiation and provides accurate temporal signals for image tagging, resolving the conflict between simple tagging mechanisms and precise timing requirements
Solution Approach 2:
The system replaces mechanical/frame-based timing mechanisms with a radiation-based temporal detection system. Instead of relying on frame grabber timing, the system uses radiation pulse detection to timestamp images, achieving higher precision without significantly increasing overall system complexity
3Device complexity
If clocks are not synchronized between devices, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The radiation detection device serves as a common temporal reference intermediary that both the imaging system and host device can reference. By synchronizing both systems to the radiation pulse timestamps rather than to each other directly, the patent achieves temporal coordination with reduced complexity
Solution Approach 2:
The radiation detection system performs multiple functions: it timestamps images, synchronizes device clocks, and provides temporal reference for co-registration. This universal temporal reference system eliminates the need for complex dedicated synchronization protocols between individual devices
4Measurement precision
If a detection device is placed near the beam source, then detection capability is improved, but harmful factors increase due to beam occlusion
Solution Approach 1:
The detection device is positioned to detect scattered radiation in a specific local region rather than attempting to detect the primary beam. By focusing on scattered radiation quality rather than total radiation, the system achieves detection capability without beam occlusion
Solution Approach 2:
The system converts the harmful scattered radiation, which was previously considered noise or interference, into a useful detection signal. By detecting scattered radiation instead of blocking the primary beam, the system transforms a harmful factor into a beneficial detection mechanism
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
Enhances image tagging accuracy, reduces workflow disruptions, and improves co-registration of angiographic and OCT images by providing real-time detection and synchronization, automating procedures like OCT pullbacks and contrast injection.
Implementation Method 1
detecting radiation scattered off a target during an imaging procedure
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
Aspects of the disclosure provide for an x-ray detection device for detecting radiation scattered off of a target during an imaging procedure and generating temporal data indicating the time of occurrence of a pulse of radiation emitted towards the target. The temporal data can be sent to a host device and used to timestamp images generated from the pulses of radiation. The x-ray detection device is portable and can be installed in a catheterization laboratory or imaging environment to detect the occurrence of radiation, without occluding or partially occluding the beam source. Aspects of the disclosure also provide for a system for receiving temporal data generated by the x-ray detection device, and accurately tagging received image frames based on the temporal data.