Arcuate Photon Counting Detector with Integrated HV Routing
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Solution Overview
Problem
Conventional radiation imaging systems face challenges in downsizing photon counting detectors while maintaining high voltage resistance and ensuring accurate positioning to prevent artifacts in tomographic images.
Innovation Solution
A radiation imaging system with a photon counting detector and collimator structure, where the detector modules are arranged in an arcuate form with supporting columns that include cutout portions for high-voltage wires, ensuring proper high voltage supply and positioning accuracy to suppress scattered rays and prevent artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between collimator rails is reduced to downsize detector modules, then the detector module size is reduced, but high voltage resistance cannot be ensured
Solution Approach 1:
The high-voltage wire is routed through the supporting column structure, transitioning from a planar arrangement to a three-dimensional configuration that utilizes the vertical space within the column. This allows the wire to pass through the interior of the supporting column rather than requiring lateral separation, effectively using the Z-dimension to resolve the space conflict.
Solution Approach 2:
The high-voltage wire is nested within the supporting column structure. The cutout portion in the supporting column provides a dedicated pathway for the wire, embedding the electrical connection within the mechanical support structure itself. This nesting eliminates the need for separate routing space and integrates multiple functions into a single compact component.
2Manufacturing precision
If the distance between supporting columns and semiconductor layer is reduced, then positioning accuracy is improved, but high voltage resistance may be compromised
Solution Approach 1:
The supporting column acts as an intermediary structure between the high-voltage wire and the semiconductor layer. By providing a dedicated cutout portion for wire routing, it mediates the spatial relationship between these components, allowing close positioning while maintaining electrical isolation and high voltage resistance through proper wire routing and insulation.
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
The system effectively downsizes the detector while maintaining high voltage resistance and improving positioning accuracy, reducing the occurrence of artifacts in tomographic images.
Implementation Method 1
a semiconductor layer receiving the photons to output an electric charge
Implementation Method 2
a collimator for suppressing scattered rays incident on the semiconductor layer
Data Source
AI summary
To provide a radiation imaging system which is adapted to downsize a photon counting radiation detector including a semiconductor layer for detecting photons of radiation and a collimator for suppressing incidence of scattered rays, and which ensures high voltage resistance. The radiation imaging system includes: a radiation source; a radiation detector; and a support portion for supporting the radiation source and the radiation detector in opposed relation. The system has a structure wherein the radiation detector includes a plurality of detecting element modules arranged in an arcuate form. The detecting element module includes a base fixed to the support portion; a semiconductor layer; a high-voltage wire for supplying high voltage to the semiconductor layer; a collimator for suppressing scattered rays, and a supporting column disposed at place within a predetermined distance from the semiconductor layer.