Endoscope Reference Value Setting for Tissue Difference Imaging
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Solution Overview
Problem
Existing medical image processing systems face challenges in accurately setting reference values for biological information, particularly in regions with low reliability, which affects the reliability of difference values between normal and abnormal tissue areas.
Innovation Solution
A medical image processing system that includes an image acquiring unit, a biological information calculating unit, a reliability calculating unit, a reference value processing unit, and a difference image generating unit, which sets a reference value based on reliability and generates a difference image by calculating the difference between the measurement value and the reference value, while also considering high reliability regions and candidate reference values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference value is set for a region with low reliability of biological information, then the reference value can be established for the measurement target, but the reliability of the difference value from the reference value becomes low
Solution Approach 1:
The patent applies local quality by differentiating between regions of high and low reliability in the observation target. The reference value processing unit selectively sets reference values only for regions where the biological information has sufficient reliability, rather than uniformly applying reference values across the entire observation target. This ensures that reference values are established only where they can meaningfully contribute to accurate difference value calculation.
Solution Approach 2:
The patent implements preliminary action by calculating the reliability of biological information before setting reference values. The reliability calculating unit evaluates the reliability metric for each region, and the reference value processing unit uses this preliminary reliability assessment to determine whether to set a reference value for that region. This prevents premature or inappropriate reference value setting in low-reliability regions.
2Reliability
If the reliability of biological information is low in a region, then the region may be excluded from reference value calculation, but this reduces the coverage of areas that can be measured
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the threshold for biological information reliability. The reference value processing unit compares the calculated reliability against a predetermined threshold to determine whether to set a reference value. By changing this threshold parameter, the system can balance between excluding low-reliability regions and maintaining comprehensive measurement coverage, allowing flexible adaptation to different observation scenarios.
Data Source
AI summary
An oxygen saturation calculating unit calculates, based on an observation image, an oxygen saturation included in the observation target. A reliability calculating unit calculates, based on the observation image, reliability regarding the biological information. A reference value processing unit sets, for a measurement value indicative of the biological information of a measurement target in the observation target, a reference value serving as a reference for the biological information by using the reliability. A difference image generating unit calculates a difference value between the measurement value and the reference value and generates, based on the difference value, a difference image.