Radiation Imaging Apparatus Orientation Protocol Mismatch

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Solution Overview

Problem

Current X-ray imaging systems face issues with radiologists manually selecting incorrect imaging protocols and annotating orientations, leading to errors in chest X-ray imaging, where the order of imaging directions can be changed and annotation mistakes occur.

Innovation Solution

A radiation imaging apparatus equipped with an orientation determination unit that automatically determines whether the subject orientation is for front or side imaging using visible or range images, and includes a protocol acquisition unit to compare selected protocols with determined orientations, issuing warnings or changing conditions to prevent errors and ensuring accurate annotations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If radiologists manually select imaging protocols from a protocol list, then imaging flexibility and adaptability are improved, but selection errors and annotation mistakes increase

Engineering Contradiction:
Improveimaging flexibilityVSAvoidprotocol selection accuracy
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs self-service by automatically determining subject orientation and selecting appropriate imaging protocols without requiring manual radiologist input. The orientation determination unit automatically analyzes subject posture and selects the correct protocol, eliminating human error while maintaining imaging flexibility through automated adaptation to different subject orientations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements feedback by comparing the determined subject orientation with the selected protocol and providing warnings when inconsistencies are detected. This feedback mechanism prevents selection errors by alerting radiologists to mismatched protocols and orientations, thereby improving reliability while preserving the ability to manually adjust when needed.

Inventive Principle:
Principle #23Feedback

2Ease of operation

If manual protocol selection is used, then radiologist discretion is maintained, but time consumption increases due to re-selection and re-imaging

Engineering Contradiction:
Improveradiologist discretionVSAvoidre-imaging time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The system performs preliminary action by automatically determining subject orientation and pre-selecting the appropriate imaging protocol before the radiologist needs to make a selection. This preliminary automation eliminates the need for time-consuming re-selection and re-imaging while still allowing radiologist discretion for final approval or adjustment.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The feedback mechanism warns radiologists of protocol_orientation mismatches before imaging occurs, preventing wasted time on incorrect imaging. This real-time feedback allows radiologists to correct selections immediately rather than discovering errors after imaging, significantly reducing re-imaging time while maintaining operational control.

Inventive Principle:
Principle #23Feedback

3Measurement precision

If automatic orientation determination is implemented, then annotation accuracy is improved, but device complexity increases

Engineering Contradiction:
Improveorientation determination accuracyVSAvoidsystem structure
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The orientation determination unit serves multiple functions: it determines subject orientation, selects appropriate imaging protocols, and provides annotation information. This multi-functionality reduces the need for separate systems for each task, thereby limiting the increase in device complexity while achieving high orientation determination accuracy through a single integrated unit.

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

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 apparatus ensures appropriate X-ray imaging by automatically determining subject orientations, preventing erroneous imaging and annotation mistakes, and allowing for consistent protocol selection, thereby improving imaging quality and reducing re-imaging needs.

Implementation Method 1

The X-rays emitted from the X-ray irradiation unit pass through the subject from the back side to the front side of the subject M, and are detected by the X-ray detection unit 33

Methodology Applied
Scientific EffectX-ray transmission and detection: X-Ray

Data Source

PatentUS11890126B2Radiation imaging apparatus
Publication Date: 2024.02.06 SHIMADZU CORP
  • US11890126B2 patent drawing
  • US11890126B2 patent drawing
  • US11890126B2 patent drawing

AI summary

A controller (50) is provided with: an orientation determination unit (51) configured to determine an orientation of a subject; a protocol acquisition unit (52); an annotation processing unit (53) configured to perform annotation; a difference determination unit (54) configured to determine whether the currently selected protocol and the orientation of the subject determined by the orientation determination unit (51) are inconsistent with each other; and a warning unit (55) configured to issue a warning and an imaging prohibition unit (56) configured to prohibit imaging when the difference determination unit (54) determines that the currently selected protocol among the protocols acquired by the protocol acquisition unit (52) and the orientation of the subject determined by the orientation determination unit (51) are inconsistent with each other.