Radiographic Imaging Apparatus Calibration Timing Control
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Solution Overview
Problem
Existing radiographic imaging systems face inefficiencies in calibration timing, leading to unnecessary calibration operations, especially in wireless cassettes where frequent power supply changes impair imaging efficiency and fail to address the need for immediate imaging in urgent situations.
Innovation Solution
A radiographic imaging apparatus and method that detects conditions such as power application, elapsed time, and connection status to determine if calibration information is appropriate, enabling calibration only when necessary, and allowing for emergency imaging notifications to prevent unnecessary calibration during urgent procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration is carried out each time power supply is turned on, then calibration accuracy is maintained, but imaging efficiency deteriorates due to unnecessary calibration operations
Solution Approach 1:
The system changes the calibration timing parameter from 'every power-on' to 'based on operational conditions'. It monitors power supply status, elapsed time, and connection status as parameters to determine when calibration is actually needed, avoiding unnecessary calibration operations while maintaining accuracy.
Solution Approach 2:
The system performs self-diagnosis to determine whether calibration is needed. By monitoring its own operational parameters (power supply state, time elapsed, connection status), the system autonomously decides when calibration should be performed without external intervention or fixed scheduling.
2Loss of energy
If power supply is frequently turned on and off in wireless cassettes, then power consumption is reduced, but calibration timing becomes problematic and imaging is delayed
Solution Approach 1:
The system dynamically adjusts calibration timing based on the actual power supply pattern and operational state. Instead of a fixed 'calibrate on every power-on' rule, the system adapts its calibration schedule according to the dynamic conditions of power supply changes, time elapsed, and connection status, allowing flexible operation with wireless cassettes.
Solution Approach 2:
The system performs preliminary assessment of calibration necessity before actually executing calibration. By checking power supply status, elapsed time, and connection status in advance, the system determines whether calibration is truly needed, preventing unnecessary delays in urgent imaging situations.
3Reliability
If calibration is performed regularly regardless of necessity, then detector deterioration is compensated, but system operation complexity increases
Solution Approach 1:
The system uses feedback from monitoring operational parameters (power supply status, elapsed time, connection status) to determine calibration timing. This feedback mechanism allows the system to maintain detector performance by calibrating when needed while avoiding unnecessary operations that would increase complexity.
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 approach ensures efficient calibration without impairing imaging efficiency, particularly in wireless cassettes, by determining the necessity of calibration based on detected conditions and allowing for emergency imaging notifications, thus optimizing system performance.
Implementation Method 1
a FPD using a semiconductor, such as amorphous selenium, which generates an electric charge when exposed to radiation
Data Source
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AI summary
Appropriate calibration is provided when a radiographic image is taken using a radiation detector. When a detecting unit (40) detects at least one of conditions including that power is applied to cassettes (22A, 22B), that a predetermined time period has elapsed from the application of power, and that the cassettes (22A, 22B) are connected is detected, a control unit (48) determines whether or not calibration information of the currently connected cassettes is appropriate. If a negative determination is made, calibration is carried out to obtain new calibration information.