3D Heterogeneous PET Detector Layout for Cost-Resolution Balance
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Solution Overview
Problem
Existing PET systems face challenges in balancing high spatial resolution and cost, particularly in imaging different body parts with varying resolution requirements, as using high-performance crystal strips increases costs while using ordinary strips compromises resolution.
Innovation Solution
A three-dimensionally heterogeneous PET system with detector modules composed of crystal strips of different performance levels, arranged in a three-dimensional configuration, allowing flexible adjustment based on organ-specific imaging needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional two-dimensional well logs are used, then the logging process is simple and fast, but the measurement precision and reliability of formation evaluation are insufficient
Solution Approach 1:
The patent transitions from conventional two-dimensional well logs to three-dimensional imaging logging by adding spatial dimensionality. The imaging logging device captures formation images in multiple directions (azimuthal and radial) to create three-dimensional representations of the borehole and formation, thereby improving measurement precision and formation evaluation reliability while accepting increased system complexity.
2Loss of information
If imaging logging device is deployed, then formation images can be obtained, but the device complexity and operation difficulty increase
Solution Approach 1:
The imaging logging device is designed with multi-functionality to handle various logging tasks within a single system. It can perform electrical imaging, acoustic imaging, and other formation characterization functions, reducing the need for multiple specialized devices and simplifying operational procedures despite the advanced capabilities.
Solution Approach 2:
The patent introduces processing systems and software intermediaries that automatically process raw imaging data, correct distortions, and generate interpretable formation models. These intermediary processing layers reduce the operational burden on users by automating complex data processing tasks.
3Reliability
If three-dimensional imaging logging is implemented, then formation characterization is improved, but the data processing complexity increases
Solution Approach 1:
The data processing system is segmented into multiple specialized modules: image acquisition modules, distortion correction modules, formation interpretation modules, and integration modules. Each module handles specific aspects of the three-dimensional data processing, making the overall complex system more manageable and maintainable while preserving formation evaluation reliability.
Data Source
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AI summary
The application provides a three-dimensionally heterogeneous PET system comprising at least two heterogeneous detector modules, each comprising at least two kinds of crystal strips closely arranged to form different detection performances levels for different kinds of crystal strips and same detection performances levels for same kind of crystal strips. Parameters of detection performances of crystal strips comprise energy resolution, density, size and light output, wherein different detection performances levels for crystal strips comprise one or more of parameters of detection performances of crystal strips being in different levels. Compared with a high spatial resolution PET system, the application effectively reduces manufacturing costs of a PET system without significantly reducing spatial resolution thereof. Compared with an ordinary spatial resolution PET system, it improves spatial resolution of a PET system by slightly increasing its cost, and can also provide imaging field of view with high spatial resolution in radial direction.