Radiographing Apparatus Dose Index Management
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Solution Overview
Problem
Existing radiographing systems fail to select a suitable target dose index based on the imaging mode, leading to inaccurate dose index calculations due to the presence or absence of a grid, which affects the radiographic image quality and dose evaluation.
Innovation Solution
A radiographing apparatus with a selecting unit to choose a target dose index based on the imaging mode, a dose index acquiring unit to calculate the dose index from image data, and a display control unit to display information on the imaging mode, target dose index, and dose index, allowing for appropriate evaluation and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a grid is attached to the radiographing apparatus to absorb scattered rays, then radiographic image quality is improved, but the dose index calculated from the radiographic image becomes lower than without the grid, leading to inaccurate dose evaluation
Solution Approach 1:
The system dynamically changes the target dose index based on the imaging mode (presence or absence of grid). The selecting unit automatically selects the appropriate target dose index corresponding to the current imaging mode, making the evaluation system adaptive rather than static.
Solution Approach 2:
The system changes the parameter of target dose index based on imaging mode. When a grid is attached, a different target dose index is selected compared to when no grid is attached, allowing accurate dose evaluation despite the grid's effect on radiation absorption.
2Ease of operation
If a fixed target dose index is used for all imaging modes, then the system is simple to operate, but the dose index evaluation becomes inaccurate when imaging mode changes
Solution Approach 1:
The system performs self-adjustment by automatically selecting the appropriate target dose index based on the imaging mode. The selecting unit autonomously determines the correct target dose index without requiring manual intervention from the operator, maintaining ease of operation while ensuring accuracy.
Solution Approach 2:
The system uses feedback from the imaging mode information to automatically adjust the target dose index selection. The selecting unit receives information about the current imaging mode and automatically selects the corresponding target dose index, creating a closed-loop system that maintains accuracy without complicating operation.
Data Source
AI summary
A radiographing apparatus includes a selecting unit configured to select a target dose index for radiographing based on a radiographing imaging mode, a dose index acquiring unit configured to acquire a dose index from image data based on radiation transmitted through a subject, and a calculating unit configured to calculate a deviation index of the dose index with respect to the target dose index. Alternatively, the radiographing apparatus may include a display control unit configured to display, on a display unit, information regarding the imaging mode, the target dose index and the dose index.