Radiographic Image Detection Device Noise Filtering

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Solution Overview

Problem

Radiographic image detection devices face challenges with noise interference, leading to poor operability and image quality issues due to external noise sources, as existing solutions require stopping the communication module or image read-out during movement, limiting immediate image confirmation and preparation for the next imaging session.

Innovation Solution

A radiographic image detection device with a control unit that judges analog signal level fluctuations and controls conversion to digital signals only when within a predetermined threshold, adding identification data to digital image data, and optionally stopping the radiation source when noise exceeds the threshold, allowing continuous operation and noise-free image capture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the communication module is stopped during image read-out to prevent noise interference, then image quality is improved, but operability and productivity deteriorate due to unnecessary operation stoppage

Engineering Contradiction:

Improveimage qualityVSAvoidoperability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system monitors signal level parameters in real-time and dynamically adjusts conversion operations based on whether fluctuation exceeds predetermined thresholds, allowing continuous operation while maintaining image quality

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the communication module is stopped during image read-out to prevent noise interference, then image quality is improved, but productivity deteriorates due to operation stoppage time

Engineering Contradiction:

Improveimage qualityVSAvoidproductivity

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system uses parameter-based decision making (comparing signal level fluctuations against thresholds) to determine when conversion should continue or stop, eliminating unnecessary stoppages and improving productivity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The judging unit provides real-time feedback on signal quality, enabling the control unit to make informed decisions about continuing or pausing conversion operations, thus maintaining productivity while ensuring image quality

Inventive Principle:

Principle #23Feedback

3Productivity

If analog signal conversion is performed continuously without noise monitoring, then productivity is improved, but image quality deteriorates due to noise-affected images being outputted

Engineering Contradiction:

ImproveproductivityVSAvoidimage quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The judging unit continuously monitors signal levels and provides feedback to the control unit, which then adjusts conversion operations accordingly - continuing conversion when signal quality is good and pausing when noise exceeds thresholds

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically changes the operational state of the conversion unit based on real-time signal parameter analysis, optimizing both productivity and image quality through parameter-driven control

Inventive Principle:

Principle #35Parameter changes

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

This solution ensures that noise-affected images are not outputted, maintaining image quality and allowing continuous operation without unnecessary stoppages, thus improving user and patient operability and enabling immediate image confirmation.

Implementation Method 1

plural radiation detection portions that are arrayed in a two-dimensional form and detect radiation

Methodology Applied

Scientific EffectRadiation detection: Absorption (EM radiation)

Implementation Method 2

plural analog signal generating units that are provided in respective correspondence with the plural radiation detection portions and that each generate an analog signal corresponding to a radiation dose

Methodology Applied

Scientific EffectSignal amplification: Magnetic Amplifier

Implementation Method 3

conversion unit that converts the analog signals, that are generated respectively at the plural analog signal generating units, into digital signals

Methodology Applied

Scientific EffectAnalog-to-digital conversion:

Data Source

PatentUS9268041B2Radiographic image detection device, radiographic image detection method, and computer-readable storage medium

Publication Date: 2016.02.23 FUJIFILM CORP

AI summary

A radiographic image detection device includes: an image pickup unit with plural radiation detection portions arrayed in a two-dimensional form and detect radiation, and that captures a radiographic image; a radiographic image generating unit having plural analog signal generating units that generate analog signals corresponding to radiation doses; a conversion unit that converts the generated analog signals into digital signals; a judging unit that judges whether or not level fluctuations of the generated analog signals are within a predetermined threshold value; and a control unit that controls the conversion unit such that an analog signal, at which it is judged that the level fluctuation is within the predetermined threshold value, is converted into a digital signal, and that controls the conversion unit such that an analog signal, at which it is judged that the level fluctuation has exceeded the predetermined threshold value, is not converted into a digital signal.