Static CT Ring With Selectable Focal Spots and Openable C-Shape
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Solution Overview
Problem
Existing computer tomographs with static radiator-detector rings face challenges in achieving high-quality X-ray imaging with efficient handling, while maintaining a non-excessively complex apparatus design.
Innovation Solution
A computer tomograph with a static radiator-detector ring constructed from an odd number of radiator-detector elements, where one element is displaceable to open the ring, allowing for a C-shaped arrangement. Each element features an anode arrangement with multiple electron emitters capable of generating focal spots at selectable positions, and detectors that cover a significant portion of the circumference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a static radiator-detector ring is used, then the device complexity is reduced and handling is improved, but the imaging quality and versatility are limited compared to rotating systems
Solution Approach 1:
The radiator-detector ring is divided into multiple radiator-detector elements that can be independently positioned. Each element contains multiple electron emitters that can generate focal spots at different positions, allowing the system to achieve comprehensive imaging coverage through coordinated activation of segmented components rather than mechanical rotation
Solution Approach 2:
The system introduces dynamic focal spot positioning within each radiator-detector element through multiple electron emitters with selectable positions. This dynamic capability allows the static ring to simulate rotating source behavior by electronically switching between different focal spot positions, maintaining imaging versatility without mechanical movement
2Adaptability or versatility
If multiple electron emitters with selectable focal spot positions are implemented, then the number of imaging possibilities is increased, but the device complexity increases
Solution Approach 1:
Each radiator-detector element is designed with multiple electron emitters that can generate focal spots at different positions, allowing a single element to perform multiple imaging functions. This multi-functionality reduces the need for separate components for different imaging modes, achieving versatility through integrated design rather than added complexity
Solution Approach 2:
The system replaces mechanical rotation of the entire radiator-detector ring with electronic control of focal spot positions within stationary elements. This substitution of mechanical movement with electronic switching achieves the same imaging versatility through a simpler, more reliable system architecture
3Ease of operation
If an odd number of radiator-detector elements is used with one displaceable element, then the ring can be opened for patient positioning, but the structural symmetry and stability are compromised
Solution Approach 1:
The radiator-detector ring is segmented into multiple independent elements, with one designated as displaceable for opening the ring. This segmentation allows the ring to maintain structural integrity when closed while enabling controlled opening for patient positioning, balancing stability and operability through modular design
Solution Approach 2:
The system intentionally introduces asymmetry by making one radiator-detector element displaceable while others remain fixed. This asymmetric design enables the ring opening function while the overall odd-numbered configuration maintains sufficient structural stability for imaging operation
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 enables efficient X-ray imaging with refined possibilities for X-ray imaging, providing good handling and outstanding imaging quality while maintaining a mass-saving construction with a high number of focal spot positions.
Implementation Method 1
each electron emitter is designed, in cooperation with an electrode arrangement, to generate a focal spot at one of at least three selectable positions on the anode arrangement
Implementation Method 2
each radiator-detector element has an anode arrangement provided for the emission of X-rays
Implementation Method 3
a detector provided for the detection of X-ray radiation
Data Source
AI summary
A computer tomograph includes a static radiator-detector ring, which is constructed from an odd number of radiator-detector elements, of which a single one is displaceable, with opening of the radiator-detector ring. The displaceable element the other radiator-detector elements together defining a C-shape. Each radiator-detector element has an anode arrangement for the emission of X-rays, which extends over an angle α of at least 0.9×360°/n on the circumference of the radiator-detector ring. A detector is provided for detection of X-ray radiation, which extends within the same radiator-detector element over an angle β of at least 0.95×360°/n. Each anode arrangement is part of a radiator arrangement including multiple electron emitters, in which each electron emitter is configured, in cooperation with an electrode arrangement, to generate a focal spot at one of at least three selectable positions on the anode arrangement.