Radiation Imaging Apparatus Dose Signal Pixel Threshold Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radiation imaging systems face inappropriate radiation stop control due to device failures or aging deterioration, leading to inaccurate detection and unnecessary radiation exposure.
Innovation Solution
A radiation imaging apparatus with a processing unit that compares integration values of electric signals from dose signal output pixels to a threshold value, transmitting prohibition or permission instructions to control the radiation source, preventing inappropriate radiation stop control and ensuring accurate exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic exposure control is implemented by detecting radiation dose, then imaging efficiency is improved, but inappropriate radiation stop control occurs due to device failure or aging
Solution Approach 1:
The system performs preliminary verification by checking the integration value of electric signals from dose signal output pixels against a threshold value before executing radiation stop control. This preliminary action detects abnormal outputs caused by device failure or aging, preventing inappropriate radiation stop decisions and ensuring reliable automatic exposure control
Solution Approach 2:
The system continuously monitors the integration value of electric signals from dose signal output pixels and provides feedback to the radiation stop control mechanism. This feedback loop ensures that abnormal conditions are detected and addressed, maintaining accurate radiation stop control while preserving imaging efficiency
2Object-affected harmful factors
If radiation stop control is performed based on detected dose, then radiation exposure is reduced, but unnecessary imaging may occur due to detection errors
Solution Approach 1:
The system performs preliminary verification by comparing the integration value of electric signals from dose signal output pixels against a threshold value before determining whether to stop radiation. This preliminary check prevents detection errors from causing unnecessary imaging while still reducing radiation exposure through accurate control
Solution Approach 2:
The system takes preliminary anti-action by detecting abnormal outputs from dose signal pixels before they can cause inappropriate radiation stop control. This prevents detection errors from leading to unnecessary imaging procedures, ensuring both radiation reduction and measurement precision
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 inappropriate radiation stop control and ensures accurate automatic exposure control by determining abnormal outputs from dose signal pixels, thereby preventing unnecessary radiation imaging.
Implementation Method 1
an imaging unit including a dose signal output pixel arranged to output an electric signal based on a dose of the radiation that has entered the dose signal output pixel
Data Source
AI summary
Provided is a system capable of preventing inappropriate radiation stop control from being performed. A radiation imaging apparatus configured to perform imaging by radiation includes: an imaging unit including a dose signal output pixel arranged to output an electric signal based on a dose of the radiation that has entered the dose signal output pixel; and a processing unit configured to perform processing of comparing an integration value of the electric signal output from the dose signal output pixel included in the imaging unit to a threshold value during a period in which the radiation is not applied to the imaging unit.