Micro-focus X-ray Source with Segmented Detectors for Large Field CT
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Solution Overview
Problem
Current CT imaging technologies face a trade-off between spatial resolution and scanning field of view, with macro CT systems having low spatial resolution but large scanning fields, and dental/micro CT systems having high spatial resolution but limited fields, necessitating an improvement in spatial resolution while maintaining scanning field of view for more accurate disease diagnosis.
Innovation Solution
The use of micro-focus bulb devices emitting quadrate-tapered or fan-shaped X-ray beams, combined with flat panel detectors or photoelectric coupling detectors, allows for a larger scanning field of view while achieving higher spatial resolution, enabling improved image quality and expanded application ranges without sacrificing field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If macro CT imaging apparatus employs bulb with larger focal spot and fan-shaped beams, then scanning field of view is improved (reach about 500 millimeters), but spatial resolution deteriorates (only reach about 0.2-0.5 millimeters)
Solution Approach 1:
The patent divides the scanning field into multiple regions by using multiple bulb devices (first bulb device, second bulb device, etc.) positioned at different locations. Each bulb device covers a specific scanning region, allowing the system to achieve both large field of view and high spatial resolution by segmenting the overall imaging task into multiple high-resolution local scans.
Solution Approach 2:
The patent employs different bulb devices with different focal spot characteristics for different scanning regions. By selecting appropriate bulb devices for specific regions, the system optimizes spatial resolution in each local area while maintaining the overall large scanning field of view through the coordinated operation of multiple devices.
2Measurement precision
If dental CT imaging apparatus or micro CT imaging apparatus uses smaller focal spot, then spatial resolution is improved, but scanning field of view deteriorates (about 200 millimeters for dental CT, about 50 millimeters for micro CT)
Solution Approach 1:
The patent combines multiple bulb devices (first bulb device, second bulb device, third bulb device, etc.) with different focal spot sizes and positions to cover the entire scanning field. By merging the coverage areas of these individual devices, the system achieves both high spatial resolution (through small focal spot devices) and large scanning field of view (through the combined coverage of multiple devices).
Solution Approach 2:
The patent creates a multi-functional imaging system where multiple bulb devices can be selectively activated based on the imaging requirements. The system can perform both high-resolution imaging in specific regions and large field of view imaging across the entire scanning area, making it universally applicable to different diagnostic needs.
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 approach enhances imaging efficiency, enables earlier diagnosis of pathological changes, reduces the need for repeated scans, and facilitates low-dose diagnosis by selecting appropriate image reconstruction modes based on resolution requirements.
Implementation Method 1
The one or more bulb devices are configured to emit quadrate-tapered or fan-shaped X-ray beams
Implementation Method 2
the plurality of detector devices are configured to receive the quadrate-tapered or fan-shaped X-ray beams emitted by the one or more bulb devices
Data Source
AI summary
The present invention provides an X-ray transceiving component for a CT imaging apparatus, comprising one or more bulb devices and a plurality of detector devices. The one or more bulb devices are configured to emit quadrate-tapered or fan-shaped X-ray beams. The plurality of detector devices are configure to receive the quadrate-tapered or fan-shaped X-ray beams emitted by the one or more bulb devices, each of the quadrate-tapered or fan-shaped X-ray beams comprising X-rays passing through a scanning field of view. Note that the plurality of detector devices are configured to receive X-rays passing through different areas within the scanning field of view, the one or more bulb devices are micro-focus bulb devices, and the plurality of detector devices are flat panel detectors or photoelectric coupling detectors. The present invention can greatly improve a resolution of CT imaging, increase imaging efficiency, and realize low-dose diagnosis in the case of ensuring that the scanning field of view is sufficient.