Photon Counting Image Processing Apparatus for Material Decomposition Display

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Solution Overview

Problem

Existing material decomposition images using photon counting technology only show discriminated materials, making it difficult to grasp the structure of tissues containing other materials nearby, and there is a need to compare these images with conventional radiation intensity images.

Innovation Solution

An image processing apparatus that obtains intensity images of radiation and material decomposition images using photon counting technology, and displays them juxtaposed, switched, or superimposed on a display unit to facilitate easy comparison.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If material decomposition images are displayed alone, then material discrimination is achieved, but tissue structure context is lost

Engineering Contradiction:
Improvematerial discrimination accuracyVSAvoidtissue structure information
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The patent merges material decomposition images with conventional intensity images by providing a display apparatus that shows both images simultaneously in a combined view, allowing physicians to see material discrimination results while maintaining context of overall tissue structure

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent adds a new display dimension by showing material decomposition images and intensity images in different visual layers or panels simultaneously, enabling comparison across multiple dimensions without losing information from either image type

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If only specific discriminated materials are shown, then material identification is improved, but comprehensive tissue assessment becomes difficult

Engineering Contradiction:
Improvematerial identification accuracyVSAvoidcomprehensive tissue assessment
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The display apparatus provides multi-functionality by simultaneously displaying both material decomposition images (for specific material identification) and intensity images (for comprehensive tissue assessment), allowing the system to serve multiple diagnostic purposes at once

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Reliability

If intensity images and material decomposition images are displayed separately, then image quality is maintained, but comparison efficiency decreases

Engineering Contradiction:
Improveimage qualityVSAvoiddiagnostic efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent combines the display of intensity images and material decomposition images into a single integrated display interface, maintaining the quality and integrity of both image types while enabling direct visual comparison to improve diagnostic efficiency

Inventive Principle:
Principle #5Merging (Combining)

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 easy comparison of intensity and material decomposition images, allowing for better understanding of tissue structures and relationships between different materials, thereby improving diagnostic efficiency.

Implementation Method 1

a photon counting type X-ray detector measures the intensity of the X-rays by capturing each incident X-ray as a photon and counting the number of photons. Further, a photon counting type X-ray detector generates a charge amount corresponding to the energy of the X-ray photon when converting the X-ray photon into the electric charge

Methodology Applied
Scientific EffectPhotoelectric Effect: Photoelectric Effect

Data Source

PatentUS20250191253A1Image processing apparatus, imaging system, image processing method, and computer-readable storage medium
Publication Date: 2025.06.12 CANON KK
  • US20250191253A1 patent drawing
  • US20250191253A1 patent drawing
  • US20250191253A1 patent drawing

AI summary

An image processing apparatus is provided that comprises: an obtaining unit configured to obtain an intensity image of radiation obtained by imaging a subject using the radiation, and a material decomposition image indicating a discriminated material and obtained by imaging the subject by counting photons of the radiation; and a display controlling unit configured to cause the intensity image of radiation and the material decomposition image to be juxtaposed, switched, or superimposed and displayed on a display unit.