X-ray Detection Unit for Seamless CT and Tomosynthesis Imaging
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Solution Overview
Problem
Current X-ray CT and tomosynthesis examination methods require different photographing techniques, leading to inefficiencies and increased examination time due to the need to adjust and rotate the X-ray detector between methods, especially when switching from X-ray CT to tomosynthesis.
Innovation Solution
An examination method and apparatus that allows the X-ray detection unit to move on a virtual circle with the optical axis of the X-ray source as the center, maintaining a consistent coordinate system direction, enabling the generation of both X-ray CT and tomosynthesis images using the same X-ray fluorography data without the need for detector rotation, thus allowing for seamless selection between examination types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different photographing techniques are used for X-ray CT and tomosynthesis, then both examination types can be performed, but the examination time increases due to the need to adjust and rotate the detector between methods
Solution Approach 1:
The patent merges the photographing techniques for X-ray CT and tomosynthesis by using the same detector position and orientation for both methods. The X-ray source and detector move together along the same circular trajectory, allowing both examination types to be performed without detector adjustment or rotation, thereby reducing examination time while maintaining versatility
Solution Approach 2:
The patent makes the photographing system universal by designing it to perform both X-ray CT and tomosynthesis examinations using the identical detector configuration and movement path. The system achieves multi-functionality without requiring method-specific adjustments, enabling seamless switching between examination types
2Adaptability or versatility
If the detector is rotated between X-ray CT and tomosynthesis, then different examination requirements are met, but the operation complexity and time consumption increase
Solution Approach 1:
The patent combines the operational procedures for both examination methods by using a single, unified detector configuration that serves both X-ray CT and tomosynthesis. The detector maintains fixed orientation relative to the X-ray source, eliminating the need for rotation or adjustment operations between methods
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 reduces examination time by eliminating the need for detector rotation and allows for efficient generation of high-quality X-ray CT and tomosynthesis images based on the same data set, facilitating flexible examination based on the type and state of the substrate being examined.
Implementation Method 1
an X-ray source 2 arranged on the lower side of the substrate stage 1, a detector stage 4 arranged on the upper side of the substrate stage 1
Data Source
AI summary
This invention provides an examination method, an examination apparatus, and an examination program capable of performing the examination corresponding to the type or the like of the site to be examined and capable of reducing the examination time when examining the substrate. The X-ray is output from an X-ray source, and the X-ray that transmitted the substrate to be examined is photographed as an X-ray perspective image in an FPD (Flat Panel Detector). The photographing for generating the reconstruction data by X-ray CT is performed at the positions on the virtual circle having the optical axis of the X-ray source as an axis, similar to the photographing for generating the reconstruction data by tomosynthesis. Thus, in generating the reconstruction data by X-ray CT, the data is converted so that each image rotates using affine conversion with the center of each X-ray perspective image as an axis according to the rotation position on the virtual circle as if the X-ray perspective images obtained at the respective positions are photographed at the positions, and then the filtering process is performed.