Radiographic Imaging Dose Feedback for Asynchronous Capture Stop

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Solution Overview

Problem

Existing radiographic imaging apparatuses face challenges in stopping radiation emission and performing image capture at asynchronous timing due to the lack of signal lines for synchronization, leading to unnecessary image capturing and increased power consumption.

Innovation Solution

A radiographic imaging apparatus with a conversion unit to convert radiation to electrical signals, an image generating unit to generate images, and a determination unit to control the emission of radiation based on detected radiation dose or generated images, allowing for precise timing of image capture and power control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If image capturing is performed at asynchronous timing between radiation source and radiographic imaging apparatus, then flexibility and ease of operation are improved, but unnecessary image capturing occurs and power consumption increases

Engineering Contradiction:

Improveasynchronous timing operationVSAvoidpower consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The determination unit continuously monitors the cumulative radiation dose detected by the detection element and provides feedback control. When the cumulative dose reaches the predetermined threshold, the control unit automatically stops the radiation source and terminates image capturing operations, preventing unnecessary power consumption while maintaining asynchronous operation flexibility.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The radiographic imaging apparatus autonomously manages its own operation timing and power consumption by internally detecting cumulative radiation dose and automatically controlling the radiation source and image capturing processes, eliminating the need for external synchronization signals while preventing wasteful operations.

Inventive Principle:

Principle #25Self-service

2Ease of operation

Engineering Contradiction:

Improveasynchronous timing operationVSAvoidimage capturing efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The determination unit continuously monitors the cumulative radiation dose and provides feedback control. When the cumulative dose reaches the predetermined threshold, the control unit automatically stops the radiation source and terminates image capturing operations, preventing unnecessary image capturing while maintaining asynchronous operation flexibility.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system pre-establishes a predetermined cumulative radiation dose threshold before imaging begins. This preliminary setting enables the determination unit to automatically judge when to stop radiation emission and image capturing, improving efficiency without requiring synchronous timing or post-processing adjustments.

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If cumulative radiation dose is continuously monitored to determine emission stop timing, then radiation emission control precision is improved, but device complexity increases

Engineering Contradiction:

Improveradiation dose detection precisionVSAvoidcontrol system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The detection element serves dual functions: it detects radiation for image generation and simultaneously monitors cumulative radiation dose for emission control. This merging of functions eliminates the need for separate monitoring hardware, reducing device complexity while maintaining precise radiation dose measurement and control capabilities.

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

Prevents unnecessary image capturing and reduces power consumption by accurately determining the completion of radiation emission and image generation at asynchronous timing, ensuring efficient operation.

Implementation Method 1

a conversion unit configured to, in response to emission of radiation, convert the radiation to an electrical signal

Methodology Applied

Scientific EffectPhotoelectric effect: Photoelectric Effect

Data Source

PatentUS12585032B2Radiographic imaging apparatus and radiographic imaging system

Publication Date: 2026.03.24 CANON KK

AI summary

A radiographic imaging apparatus includes, in an image capturing region in which multiple pixels for obtaining radiological image data are arranged in rows and columns, a pixel array including a detection pixel group of a plurality of detection pixels for detecting the radiation dose, a control unit configured to control the image capturing, an image capturing unit configured to capture an image taken with the control unit, and an image-capturing-termination determination unit configured to terminate the image capturing at the image capturing unit based on the radiation dose information from the detection pixel group.