Radiation Image Processing Device for Lung Region Contrast Stability
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Solution Overview
Problem
Conventional radiation image processing devices struggle to perform uniform contrast adjustment across frame images in moving images, making it difficult to accurately diagnose changes in lung regions due to variations in contrast caused by patient breathing, which can obscure abnormalities and hinder diagnosis.
Innovation Solution
A radiation image processing device that extracts a reference region from each frame image, calculates optimal image processing conditions, and applies a standard image processing condition uniformly across all frames to maintain consistent contrast, allowing for accurate representation of shape, movement, and density changes in lung regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image processing is performed on each frame image to adjust contrast, then the contrast of each frame can be optimized, but the contrast becomes non-uniform across frame images making the moving image difficult to view
Solution Approach 1:
The patent applies parameter changes by using different image processing conditions for different regions within the same frame image. Specifically, the lung region uses one set of processing parameters while the non-lung region uses another set, allowing each region to be optimized independently while maintaining overall image quality and uniformity across frames.
2Reliability
If contrast adjustment is applied to each frame image, then the visibility of individual frames improves, but the brightness and contrast variations between frames make it difficult to distinguish actual lesions from processing artifacts
Solution Approach 1:
The patent applies local quality by performing different image processing operations on different regions of the image. The lung region receives specific processing tailored to its characteristics, while the non-lung region receives different processing, ensuring that each region is optimized without compromising the overall diagnostic information or creating artificial variations that could mask or mimic lesions.
3Stability of the object's composition
If the reference region is set to the lung region for contrast stabilization, then the contrast variation is suppressed, but the natural contrast changes due to patient breathing are also suppressed making it difficult to detect abnormalities
Solution Approach 1:
The patent applies segmentation by dividing the image into distinct regions: the lung region and the non-lung region. This allows the system to apply different processing strategies to each region - stabilizing contrast in non-lung areas while preserving natural contrast variations in the lung region that are essential for detecting breathing-related abnormalities and lesions.
Data Source
AI summary
A radiation image processing device which performs image processing to a moving image that is obtained by emitting radiation to a subject, the radiation image processing device including a hardware processor that: extracts a reference region from each of a plurality of frame images which form the moving image; calculates an image processing condition of the reference region for each of the frame images from which the reference region is extracted; determines a standard image processing condition which is a standard based on the calculated image processing condition of each of the frame images; and performs image processing by applying the determined standard image processing condition to each of the frame images.