Radiographic Detector Motion Sensor Exposure Control
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Solution Overview
Problem
In medical digital x-ray imaging, there is a risk of unnecessary patient exposure to X-ray radiation due to the incorrect selection of active detectors, as multiple detectors are often enabled but only one can capture an image, and technologists may accidentally use a non-active detector.
Innovation Solution
A radiographic imaging system with motion sensors in each detector that transmits a signal when moved, designating one detector as active and disabling the x-ray source if a non-active detector is moved, requiring operator confirmation before enabling exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple digital radiographic detectors are enabled and ready for image capture, then the system provides flexibility for capturing different image sizes and quality capabilities, but the risk of accidental patient exposure increases when a non-active detector is mistakenly used
Solution Approach 1:
The system continuously monitors detector position and provides feedback to the control system. When a detector moves from its expected position or a non-active detector is detected in the imaging path, the system receives feedback and automatically prevents x-ray exposure by disabling the x-ray source, thus eliminating the harmful effect while preserving detector flexibility
Solution Approach 2:
The patent introduces an intermediary control system that acts as a mediator between the detector array and the x-ray source. This intermediary layer verifies detector readiness and positioning before allowing exposure, preventing direct harmful interaction between the x-ray source and patients when incorrect detectors are used
2Object-affected harmful factors
If motion sensors are added to each detector to detect movement and prevent accidental exposure, then patient safety improves, but device complexity increases
Solution Approach 1:
Each detector is equipped with self-monitoring motion sensors that automatically detect their own movement and communicate with the central control system. This self-service capability eliminates the need for external monitoring equipment, reducing overall system complexity while maintaining enhanced safety
Solution Approach 2:
The patent replaces complex mechanical interlocking systems or manual verification procedures with electronic motion sensors and digital control logic. This substitution simplifies the system by using lightweight electronic components instead of heavy mechanical safety devices, reducing complexity while improving reliability
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 patient exposure to ionizing radiation by ensuring only the designated active detector is used for imaging, thereby reducing the risk of accidental X-ray exposure.
Implementation Method 1
each having a motion sensor configured to transmit a movement signal when the detector is moved
Data Source
AI summary
A radiographic imaging system having a number of useable digital radiographic detectors selectively activates one of the detectors to capture a radiographic image. The DR detectors each include a movement detector configured to transmit a movement signal when a movement of the corresponding detector is sensed. A portion of the system is disabled in response to receiving a movement signal transmitted from a motion sensor in a detector other than the active detector.