X-Ray ROI Extraction by Grouping Non-Overlapping Projections
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Solution Overview
Problem
Current mammography machines using field-emitting X-ray sources require multiple projections to minimize motion artifacts, leading to time-consuming region-of-interest extraction in mammary gland imaging.
Innovation Solution
A region-of-interest extraction method and apparatus that groups and combines X-ray sources with non-overlapping imaging regions, allowing for efficient extraction of combined imaging regions, reducing the number of regions needing extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple field-emitting X-ray sources are used to perform projection imaging of different portions of the mammary gland, then motion artifacts are minimized and image quality is improved, but the time required for region-of-interest extraction increases significantly
Solution Approach 1:
The patent combines multiple projection images from different X-ray sources into a composite image. By merging the projection data from multiple angles and sources, the system extracts regions of interest more efficiently from the combined image rather than processing each projection separately, thereby reducing total extraction time while maintaining image quality
Solution Approach 2:
The patent creates a universal extraction method that works across multiple projection images from different X-ray sources. The region of interest extraction algorithm is designed to handle composite images from multiple sources simultaneously, making the extraction process multi-functional and applicable to all projection data in a unified manner
2Area of stationary object
If multiple field-emitting X-ray sources are used to perform projection imaging, then comprehensive coverage of the mammary gland is achieved, but the complexity of processing and extracting regions of interest from multiple projections increases
Solution Approach 1:
The patent merges multiple projection images into a single composite image that encompasses the entire mammary gland region. This combining approach consolidates the data from multiple X-ray sources into one unified image, simplifying the processing workflow and reducing the complexity of handling multiple separate projections
Data Source
AI summary
A region-of-interest extraction method and an apparatus, and a device, a system and a storage medium are provided. The region-of-interest extraction method is applied to an X-ray imaging system. The X-ray imaging system includes a detector and an array X-ray source, the array X-ray source includes a plurality of X-ray sources having different projection angles, and imaging regions corresponding to the plurality of X-ray sources are formed on the detector. The method includes: acquiring geometric position parameters corresponding to the plurality of X-ray sources; grouping the plurality of X-ray sources according to the geometric position parameters of the plurality of X-ray sources, determining at least one X-ray source group, and imaging regions of X-ray sources in the same X-ray source group not overlapping with each other; combining the imaging regions of the X-ray sources in each of the at least one X-ray source group, so as to determine a combined imaging region corresponding to each of the at least one X-ray source group; and performing region-of-interest extraction on projection data in the combined imaging region corresponding to each of the at least one X-ray source group.