X-ray detector module support with planar base plate
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Solution Overview
Problem
The production of x-ray detectors for computed tomography systems is complex and resource-intensive due to the need for curved supports to align detector modules with the x-ray radiation source, and these detectors are exposed to significant centrifugal forces during operation, requiring a solid and costly design.
Innovation Solution
An x-ray detector design featuring a base plate with a planar upper face, where detector modules are mounted in a z-direction perpendicular to the x-ray radiation source, simplifying manufacturing and enhancing stability with L-shaped or T-shaped module supports and bracing bars, allowing for a more straightforward and cost-effective construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If curved support structures are used to align detector modules with the x-ray radiation source, then the alignment precision and signal strength are improved, but the manufacturing complexity and cost increase
Solution Approach 1:
Instead of curving the support structure to match the fan-shaped beam geometry, the patent inverts the approach by using a planar support structure with detector modules that are angled relative to each other. The detector modules are arranged with their surfaces inclined at different angles to the planar support, effectively achieving the curved alignment through the detectors rather than through the support structure itself.
Solution Approach 2:
The patent divides the curved alignment function into discrete segments by using multiple detector modules, each with its own bearing surface oriented at a specific angle. Rather than requiring a continuously curved support, the system segments the alignment task across multiple planar-mounted modules, each contributing to the overall fan-shaped detection geometry.
2Stability of the object's composition
If solid support structures are used to withstand centrifugal forces during operation, then the mechanical stability is improved, but the resource consumption and manufacturing cost increase
Solution Approach 1:
The patent employs thin-walled module supports with optimized structural geometry rather than bulky solid structures. The module supports feature wall structures that provide sufficient mechanical strength to withstand centrifugal forces while minimizing material usage. The design relies on efficient structural forms rather than excessive material quantity.
Solution Approach 2:
The patent utilizes composite construction by combining the planar support structure with individually angled detector modules. This modular composite approach allows each component to be optimized independently, reducing overall material requirements while maintaining the necessary mechanical stability under centrifugal loading during CT operation.
Data Source
AI summary
An x-ray detector is disclosed, for a computed tomography system. In an embodiment, the x-ray detector includes a base plate and a number of detector modules, each including at least one detector field with a detector surface facing counter to an r-direction on a front face and each including a module support, fastened to the base plate. In at least one embodiment, the module support includes a bearing surface facing the base plate, perpendicular to the detector surface, for fastening purposes.