Integrated Radiation Detector Modules for Multi-Modality Imaging
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Solution Overview
Problem
Current imaging systems face challenges in integrating multiple modalities effectively, leading to performance compromises and increased costs, particularly in medical diagnostic and small animal imaging, where shared detector systems for x-ray and gamma ray imaging often result in suboptimal results due to differing collimation and flux rate requirements.
Innovation Solution
Development of high-speed detector electronics and various detector materials for integrated detector systems that can be used in medical diagnostic imaging, including x-ray, gamma ray, and PET imaging, allowing for cost-effective and multipurpose systems with enhanced radiation detection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple imaging modalities are integrated into a shared detector system, then cost is reduced and functionality is increased, but performance is compromised due to differing requirements
Solution Approach 1:
The detector system is divided into multiple independent detector modules, each optimized for specific imaging modalities (x-ray, gamma ray, PET). These modular detectors can be selectively activated based on the imaging requirement, allowing integration of multiple modalities while maintaining optimal performance for each through physical and functional separation.
Solution Approach 2:
The detector system incorporates universal detector modules capable of operating across multiple imaging modalities. By designing detectors with adjustable parameters and configurable readout electronics, the same physical detector can serve multiple purposes (x-ray, gamma ray, PET imaging) without requiring complete separate systems, achieving cost-effectiveness while preserving performance through flexible configuration.
2Ease of manufacture
If detector systems are shared between different imaging modalities, then system cost is reduced, but manufacturing complexity increases
Solution Approach 1:
The system uses segmented detector modules that can be independently manufactured and then assembled into different configurations. Each module is designed with standardized interfaces and mounting mechanisms, simplifying the manufacturing process while allowing flexible integration into multi-modality systems. This modular approach reduces overall system complexity by breaking down the integrated system into manageable, pre-manufactured units.
Solution Approach 2:
The detector system employs adjustable operational parameters (energy thresholds, gain settings, readout configurations) that can be changed through software control rather than physical reconfiguration. This allows the same hardware to adapt to different imaging modalities through parameter changes, reducing manufacturing complexity while maintaining the ability to serve multiple purposes.
3Reliability
If separate imaging systems are used for different modalities, then performance is optimized for each modality, but registration errors occur and scan time increases
Solution Approach 1:
Multiple imaging modalities are merged into a single integrated detector system with shared detection resources and common coordinate systems. This allows simultaneous or sequential acquisition of different modalities (x-ray, gamma ray, PET) without requiring physical repositioning or separate scanning procedures, eliminating registration errors and reducing total scan time while maintaining optimized performance for each modality through dedicated detector modules.
Solution Approach 2:
The integrated detector system enables continuous imaging across multiple modalities without interruption or repositioning. The system can switch between modalities or acquire data from multiple modalities simultaneously, maintaining continuous useful action throughout the imaging process. This eliminates the time losses associated with transitioning between separate systems and ensures consistent spatial registration across all modalities.
Data Source
AI summary
Detector module designs for radiographic imaging include first and second layers of scintillator rods or pixel arrays oriented in first and second directions. The first and second directions are transversely oriented to define a light sharing region between the first and second layers. Encoding features may be disposed in, on or between the first and second layers, and configured to modulate propagation of optical signals therealong or therebetween.