X-Ray Phase Image Preview for Selecting Contrast Modes
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Solution Overview
Problem
Existing X-ray phase imaging systems do not allow users to determine prior to actual imaging whether a suitable phase contrast image type for a subject will be acquired, leading to unnecessary repetition of image capture tasks.
Innovation Solution
An X-ray phase imaging apparatus and method that generates and displays two or more types of phase contrast images (absorption, differential phase, and dark-field) as preview images under simpler conditions than actual imaging, allowing users to select the suitable image type before capturing actual images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If preliminary imaging is performed to check subject position, then subject positioning is improved, but users cannot determine whether a suitable phase contrast image type will be acquired
Solution Approach 1:
The system performs preliminary imaging to capture subject position information, and then generates preview images of different phase contrast types (absorption, differential phase, dark-field) from the captured data. This allows users to evaluate image quality and select appropriate imaging parameters before actual imaging, preventing unnecessary re-shots.
Solution Approach 2:
The system creates preview images that are simplified copies of the actual phase contrast images using the same image processing algorithms. These preview images replicate the visual characteristics of different phase contrast types, allowing users to predict the quality of final images without performing complete imaging sequences.
2Measurement precision
If users capture images again when unsuitable images are obtained, then image quality is improved, but productivity decreases due to repetitive tasks
Solution Approach 1:
The system provides visual feedback by displaying multiple types of preview images (absorption, differential phase, dark-field) generated from preliminary imaging data. Users can directly observe which image type best suits their needs and adjust imaging parameters accordingly, eliminating the trial-and-error process and avoiding repetitive image capture.
3Adaptability or versatility
If multiple types of phase contrast images are generated as previews, then user ability to select suitable image type is improved, but device complexity increases
Solution Approach 1:
The image processing unit uses a universal set of image processing algorithms that can generate multiple types of phase contrast images (absorption, differential phase, dark-field) from the same preliminary imaging data. This multi-functional approach allows diverse image type generation without requiring separate processing pipelines for each image type, managing complexity through algorithmic versatility.
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
Enables users to determine the suitability of phase contrast images prior to actual imaging, reducing the need for repetitive image capture and improving user efficiency.
Implementation Method 1
an X-ray source configured to irradiate a subject with X-rays; a detector configured to detect X-rays radiated from the X-ray source
Implementation Method 2
a plurality of gratings arranged between the X-ray source and the detector
Data Source
AI summary
An X-ray phase imaging apparatus includes an X-ray source; a detector; a plurality of gratings; an image processor configured to generate two or more types of first phase contrast images selected from absorption, differential phase and dark-field images as preview images under an imaging condition simpler than an imaging condition for a second phase contrast image to be captured in actual imaging; and a controller configured to display the first phase contrast images on a display.