Radiographing System Scattered Radiation Correction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional radiographing systems face challenges in addressing scattered radiation during long-size imaging operations, which affects the quality of wide observation region images such as spinal cord or whole body imaging.

Innovation Solution

A radiographing system comprising multiple radiation detecting apparatuses and a scattered radiation correction unit that performs image data correction using models for primary X-ray and scattered radiation, enhancing image quality by minimizing defective regions caused by overlapping apparatuses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If multiple radiation detecting apparatuses are used for long-size imaging, then the imaging coverage area is improved, but scattered radiation increases causing image quality degradation

Engineering Contradiction:

Improveimaging coverage areaVSAvoidscattered radiation

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The imaging system is divided into multiple radiation detecting apparatuses that capture different regions separately. Each apparatus images a specific segment of the long-sized target object, and the segments are later composited to form the complete long-sized image, thereby reducing scattered radiation in each individual image while maintaining comprehensive coverage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The control device acts as an intermediary that coordinates the imaging process. It controls the radiation generating unit and multiple radiation detecting apparatuses to perform sequential or coordinated imaging, managing the composite image generation process to eliminate scattered radiation effects while achieving wide-area coverage.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Area of stationary object

If multiple radiation detecting apparatuses are arrayed to cover wide region, then the observation region is improved, but image composition complexity increases

Engineering Contradiction:

Improveobservation regionVSAvoidimage composition complexity

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The control device receives image data from multiple radiation detecting apparatuses and performs automated composite image generation. The system uses feedback mechanisms to coordinate the imaging process, manage data from multiple sources, and automatically compose the final long-sized image, reducing the complexity burden on operators.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system creates multiple copies of the imaging process using identical radiation detecting apparatuses positioned at different locations. Each apparatus captures a copy of the image data for its specific region, and these copies are then synthesized by the control device to form the complete long-sized image, simplifying the overall system architecture.

Inventive Principle:

Principle #26Copying

3Stability of the object's composition

If radiation detecting apparatuses partly overlap, then continuous coverage is improved, but scattered radiation from overlapping regions increases

Engineering Contradiction:

Improvecontinuous coverageVSAvoidscattered radiation from overlapping regions

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The overlapping imaging regions are segmented and assigned to different radiation detecting apparatuses. Each apparatus captures its specific segment with controlled scattered radiation, and the control device composites these segments by managing the overlapping regions, thereby maintaining continuous coverage while minimizing the impact of scattered radiation through precise region management.

Inventive Principle:

Principle #1Segmentation

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

The system effectively corrects scattered radiation, improving the quality of long-sized images by reducing the impact of overlapping radiation detecting apparatuses' reflections, resulting in clearer images for wide observation regions.

Implementation Method 1

a plurality of radiation detecting apparatuses that can detect radiation and output radiographic images

Methodology Applied

Scientific EffectRadiation detection: X-Ray

Implementation Method 2

scattered radiation may occur when the radiation transmits through a subject

Methodology Applied

Scientific EffectScattered radiation: Scattering

Implementation Method 3

models for primary X-ray and scattered radiation

Methodology Applied

Scientific EffectPrimary X-ray transmission: X-Ray

Data Source

PatentUS10426423B2Radiographing system and radiographing method for reducing scattered radiation component from radiographic image and generating long-sized image

Publication Date: 2019.10.01 CANON KK

AI summary

A radiographing system and a radiographing method capable of improving the image quality of a long-sized image by appropriately correcting scattered radiation are disclosed. The radiographing system includes a plurality of radiation detecting apparatuses that can detect radiation and output radiographic images, a composition processing unit configured to generate a long-sized image by composing a plurality of radiographic images acquired from the plurality of radiation detecting apparatuses, and a scattered radiation correction unit configured to perform processing for correcting scattered radiation for a radiographic image output from at least one of the plurality of radiation detecting apparatuses.