Adjustable CT Detector Segments for Static Gantry Weight Reduction
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Solution Overview
Problem
Existing computed tomography systems are limited by the need for a stable, heavy gantry design due to rotational forces, which restricts their flexibility and mobility, making them primarily suitable for stationary use.
Innovation Solution
A computed tomography system with a static gantry and a detector ring composed of adjustable detector segments, allowing for precise alignment and easier maintenance, reducing the need for rotational forces and enabling a lighter, more flexible design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detector is rotated together with the X-ray tube around the subject, then good CT image data can be obtained, but the gantry and rotation mechanism must be very stable and have high weight
Solution Approach 1:
The detector is divided into multiple detector segments that can be independently positioned. This segmentation allows the detector to capture X-rays from multiple angles without requiring rotation of the entire gantry, thereby reducing the weight and complexity of the rotation mechanism while maintaining image quality.
Solution Approach 2:
Instead of rotating the detector and X-ray tube around the subject as in conventional CT systems, this invention inverts the approach by using a static gantry with detector segments that can be independently positioned. The image reconstruction is achieved through computational methods rather than physical rotation, eliminating the need for heavy rotation mechanisms.
2Manufacturing precision
If the gantry is designed with high stability to support rotational forces, then precise detector orientation is achieved, but the system becomes stationary and less flexible
Solution Approach 1:
The detector segments are designed with adjustable positions along the axial direction, allowing dynamic reconfiguration of the detector array. This dynamic capability enables the system to adapt to different examination requirements and patient sizes while maintaining precise orientation, without requiring a heavy stationary gantry design.
Solution Approach 2:
The invention replaces the mechanical rotation system with a static detector array that uses computational imaging techniques. This substitution eliminates the need for heavy mechanical structures while maintaining imaging precision through software-based reconstruction algorithms that can handle data from multiple detector segments.
3Stability of the object's composition
If the detector is designed as a single unit, then structural stability is maintained, but replacement and maintenance become more difficult
Solution Approach 1:
The detector is divided into multiple independent detector segments that can be individually replaced or maintained. This segmentation maintains the overall structural stability of the detector assembly while enabling easy replacement of individual segments, reducing maintenance downtime and costs.
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 achieves a more flexible and cost-effective CT system with improved image quality and reduced weight, enabling applications in smaller spaces and less stable environments.
Implementation Method 1
The detector generally comprises electronic components which are used for converting detected X-rays emitted by an X-ray tube into electronic signals
Data Source
AI summary
A computed tomography system comprises: an examination region and a static gantry, wherein the gantry includes an X-ray source and a detector ring. The detector ring encircles the examination region and includes at least two detector segments. The computed tomography system is configured such that a position of the at least two detector segments relative to one another in an axial direction of the detector ring is adjustable.