Integrated Detector Systems for SPECT PET CT Imaging
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Solution Overview
Problem
Current imaging systems, such as SPECT-PET and CT-SPECT, face performance compromises and high costs due to separate detectors and imaging spaces, limiting their commercial success and effectiveness in medical and small animal imaging.
Innovation Solution
Development of high-speed detector electronics and various detector materials for integrated detector systems that combine Compton camera designs with CT and PET capabilities, enabling cost-effective, single-purpose, and multipurpose imaging systems for diagnostic x-ray, gamma ray, and nuclear medicine applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate detectors and imaging spaces are used for different imaging modalities (SPECT, PET, CT), then each modality can be optimized independently, but the system cost increases and performance compromises occur
Solution Approach 1:
The patent combines multiple imaging modalities (SPECT, PET, and CT) into a single integrated detector system that shares common detectors and imaging space. This merging eliminates the need for separate detector systems for each modality, reducing overall system cost while maintaining the ability to perform all three imaging types through a unified platform.
Solution Approach 2:
The integrated detector system is designed to perform multiple imaging functions (SPECT, PET, and CT) simultaneously or sequentially using the same physical detectors and imaging space. This multi-functionality allows a single system to replace what would traditionally require three separate systems, achieving cost reduction without sacrificing imaging capability.
2Device complexity
If detectors are shared between different imaging modalities, then costs are reduced, but performance compromises occur
Solution Approach 1:
The system employs dynamic configuration where the same physical detectors can be dynamically allocated to different imaging modalities as needed. The detector system can switch between SPECT, PET, and CT modes, and can even perform simultaneous multi-modality imaging, allowing optimal performance for each modality while sharing the same hardware platform.
Solution Approach 2:
The patent applies different detector characteristics and readout configurations to different regions or modes of the same detector system. By optimizing local detector properties for specific imaging modalities while maintaining a unified physical platform, the system achieves modality-specific performance optimization without requiring completely separate detector systems.
3Measurement precision
If separate imaging spaces are used for SPECT-PET systems, then registration errors are avoided, but scan time increases and functionality is reduced
Solution Approach 1:
The patent merges SPECT, PET, and CT imaging into a single shared imaging space with common detectors. This eliminates the need for separate imaging spaces and the associated registration problems, while simultaneously reducing total scan time since all modalities are acquired in the same session using the same detector platform.
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.