Detector Sub-Modules Spherical Arrangement for CT Imaging
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Solution Overview
Problem
Current medical devices, such as CT scanners, face challenges in effectively arranging detector sub-modules to optimize X-ray detection and minimize secondary harm from excessive X-ray irradiation, requiring innovative configurations to enhance diagnosis accuracy.
Innovation Solution
The arrangement of detector sub-modules on a support with top surfaces tangent to spherical surfaces of target spheres, where the sphere centers align with the focal spot of the radiation source, allowing for efficient detection and conversion of attenuated rays into electrical signals, and utilizing a medical device with a scanning gantry, radiation source, and detector configured to emit and detect rays while processing data for image reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If more detector sub-modules are mounted on the housing to improve diagnosis effect, then detection capability is improved, but device complexity and arrangement difficulty increase
Solution Approach 1:
The patent applies spherical geometry by positioning detector sub-modules such that their top surfaces are tangent to spherical surfaces with centers at the radiation source focal spot. This curved arrangement optimizes the detection angle and coverage area, allowing more sub-modules to be effectively mounted while maintaining geometric precision and reducing arrangement complexity through mathematical regularity.
Solution Approach 2:
The detector is divided into multiple detector sub-modules, each independently mounted on the housing. This segmentation allows the system to achieve comprehensive detection coverage by combining multiple smaller units, improving overall detection capability while enabling modular assembly that reduces the complexity of mounting and arrangement.
2Area of stationary object
If detector sub-modules are arranged to cover larger area for better detection, then detection coverage is improved, but X-ray irradiation exposure increases
Solution Approach 1:
By arranging detector sub-modules along spherical surfaces centered at the focal spot, the patent achieves optimal detection coverage where each sub-module is positioned at the ideal detection angle. This geometric optimization ensures that the detector captures X-rays efficiently along the intended path, reducing the need for excessive X-ray exposure to achieve adequate signal strength across the detection area.
Solution Approach 2:
Each detector sub-module is positioned with its top surface tangent to a specific spherical surface at a precise location. This local optimization ensures that each sub-module receives X-rays at the optimal angle for detection, maximizing detection efficiency at each local position and reducing overall radiation exposure requirements while maintaining comprehensive coverage.
3Area of stationary object
If detector sub-modules are positioned at different distances from focal spot to increase coverage, then detection coverage is improved, but noise differences and image quality uniformity deteriorate
Solution Approach 1:
The patent positions detector sub-modules on spherical surfaces with centers at the focal spot, creating a geometrically consistent arrangement where all sub-modules are equidistant from the focal spot. This spherical configuration ensures uniform detection conditions across all sub-modules, eliminating noise differences caused by varying distances and maintaining consistent image quality throughout the detection coverage area.
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 configuration improves the quality of reconstructed images by ensuring accurate detection and processing of X-ray attenuation, reducing noise differences and enhancing diagnostic effectiveness while minimizing exposure to excessive X-ray irradiation.
Implementation Method 1
The CT device may detect X rays penetrating through the human body by a detector and convert received optical signals into electrical signals
Data Source
AI summary
Methods, devices, systems and apparatus for arranging detector sub-modules in a medical device are provided. In one aspect, a detector includes a housing and a plurality of detector modules arranged in parallel along a direction on the housing and configured to detect rays emitted from a radiation source and attenuated by a subject. Each of the plurality of detector modules includes a support extending in the direction and a plurality of detector sub-modules arranged on the support along the direction. A top surface of each of the plurality of detector sub-modules is tangent to a respective spherical surface of a corresponding target sphere of at least two target spheres having different radiuses, and a respective sphere center of each of the at least two target spheres is substantially overlapped with a focal spot of the radiation source.