Stepped Detector Module Layout for Uniform CT Scanning Gaps
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Solution Overview
Problem
The uneven and irregular gaps between detector modules in medical devices like CT scanners affect image reconstruction, leading to suboptimal diagnosis results due to non-uniform gaps with different widths.
Innovation Solution
A detector module design with detection sub-modules arranged in a stepped manner, featuring photoelectric conversion units with alternating and uniformly arranged gaps, reducing gap differences between adjacent and alternating steps, and utilizing a support, substrate, and analog-to-digital converters for efficient signal conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If detector modules are arranged in a stepped manner with increasing number of steps, then detection coverage is improved, but gap uniformity deteriorates
Solution Approach 1:
The detector module is segmented into multiple detection sub-modules arranged in steps, where each sub-module contains multiple photoelectric conversion units with uniformly spaced gaps. This segmentation allows the system to achieve comprehensive detection coverage through the stepped arrangement while maintaining uniform gap widths within each sub-module, thereby resolving the contradiction between coverage and uniformity.
Solution Approach 2:
Different regions of the detector module are designed with different characteristics: the stepped arrangement provides varying detection coverage in different zones, while each local region (detection sub-module) maintains uniform gap quality. This local quality approach ensures that gap uniformity is preserved locally even as overall coverage expands through the stepped structure.
2Area of stationary object
If detector modules are arranged in a stepped manner, then detection coverage is improved, but image reconstruction quality deteriorates
Solution Approach 1:
By segmenting the detector into multiple sub-modules with uniform internal gaps, the system achieves comprehensive coverage through stepped arrangement while maintaining the regularity needed for accurate image reconstruction. The uniform gap pattern within each sub-module provides consistent sampling intervals that facilitate reconstruction algorithms.
Solution Approach 2:
The stepped arrangement creates an asymmetric overall structure that expands detection coverage, while each symmetric sub-module with uniform gaps maintains local regularity. This combination of asymmetric global structure and symmetric local structure allows both improved coverage and maintained reconstruction quality.
3Manufacturing precision
If gaps between photoelectric conversion units are uniformly arranged, then image reconstruction is improved, but detection coverage is reduced
Solution Approach 1:
The detector utilizes a three-dimensional stepped arrangement where uniform gap patterns are maintained within each horizontal sub-module layer, while vertical stacking and lateral offsetting of layers expand the overall detection coverage. This dimensional approach allows uniform gaps to be preserved locally while achieving extended coverage through spatial arrangement.
Solution Approach 2:
Multiple detection sub-modules are nested in a stepped configuration where each sub-module contains uniformly spaced photoelectric conversion units. The nested arrangement allows uniform gap patterns to be replicated across multiple levels, achieving both local uniformity and global coverage expansion.
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 design enhances scanning data completeness, improves diagnosis accuracy by uniformly arranging gaps, and facilitates easier production and assembly, thereby improving image reconstruction and overall diagnostic precision.
Implementation Method 1
a CT detector, and convert a received optical signal into an electrical signal
Data Source
AI summary
Provide are a detector module, a detector, and a medical device. The detector module includes a plurality of detection sub-modules at least partially arranged in a stepped manner in a first direction. Each of the plurality of detection sub-modules includes a plurality of photoelectric conversion units arranged at intervals in a second direction intersecting with the first direction. One of two adjacent detection sub-modules is located at a higher step as a first detection sub-module, and the other one is located at a lower step and as a second detection sub-module. A first gap is formed between the plurality of photoelectric conversion units of the first detection sub-module. A second gap is formed between the plurality of photoelectric conversion units of the second detection sub-module. A width of the first gap in the second direction is smaller than a width of the second gap in the second direction.