Modular X-ray CT Detector for Reconfigurable Field of View
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Solution Overview
Problem
Existing CT imaging systems have fixed fields of view, making it costly and impractical to adjust the field of view in response to changing requirements, such as in explosives detection or non-destructive testing, as the entire system needs to be replaced to accommodate larger fields of view.
Innovation Solution
A modular detector assembly with selectively removable detector modules, allowing for adjustment of the field of view by changing the number of detector modules and their positions relative to the x-ray source, enabling the imaging system to operate with multiple field of views from a single compact geometry gantry assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed field of view is used in CT imaging systems, then the system design is simplified and cost is reduced for a specific application, but the system cannot adapt to changing imaging requirements
Solution Approach 1:
The detector array is divided into multiple independently removable detector modules that can be selectively configured. Each detector module can be independently positioned or removed to adjust the field of view, allowing the system to adapt to different imaging requirements without redesigning the entire system.
Solution Approach 2:
The detector array transitions from a fixed configuration to a dynamic, reconfigurable structure where detector modules can be selectively added, removed, or repositioned. This dynamic capability allows the field of view to be adjusted based on changing operational requirements while maintaining a relatively simple base system design.
2Area of stationary object
If a larger field of view is required, then the imaging system can accommodate larger objects or broader detection areas, but the number of detectors required increases proportionally to the diameter of the FOV
Solution Approach 1:
The detector array is segmented into multiple modular units that can be selectively configured. When a larger field of view is needed, additional detector modules can be added to expand the coverage area, rather than requiring a complete redesign of the entire detector array.
Solution Approach 2:
The detector modules are designed with universal compatibility, allowing the same basic module design to serve multiple field of view requirements. The modules can be configured in different arrangements and positions to accommodate various imaging applications, reducing the need for specialized detectors for each application.
3Area of stationary object
If the field of view is increased in existing systems, then larger objects can be imaged, but the entire system must be replaced rather than reconfigured
Solution Approach 1:
The detector array is divided into standardized, interchangeable modules that can be independently configured. This segmentation allows the system to be reconfigured by adding or removing modules rather than replacing the entire system, significantly improving ease of manufacture and reconfiguration.
Solution Approach 2:
The system incorporates dynamic reconfigurability where detector modules can be selectively added or removed to adjust field of view size. This dynamic capability eliminates the need for wholesale system replacement when larger fields of view are required, making the system more adaptable and cost-effective.
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
This solution allows for quick reconfiguration of the field of view, reducing costs and enabling the system to adapt to changing requirements without significant changes in the overall dimensions of the gantry, thus maintaining a smaller footprint while accommodating larger objects.
Implementation Method 1
a radiation source that emits radiation beams, such as x-ray beams, toward the object to be imaged
Data Source
AI summary
A gantry assembly for use with an imaging system is provided. The gantry assembly includes an x-ray source and a modular detector assembly that includes a plurality of selectively removable detector modules. A first detector module of the plurality of detector modules is mounted at a first distance from the x-ray source and a second detector module of the plurality of detector modules is mounted at a second distance from the x-ray source. The first distance is different from the second distance. The gantry assembly is configured to image objects using both a first field of view and a second field of view that is larger than the first field of view.