Conductor Layer Between Sensor Panels for Radiographic Imaging
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Solution Overview
Problem
The existing radiographic image detection devices with two sensor panels sequentially arranged in the thickness direction suffer from mutual interference, leading to degraded image quality due to electromagnetic noise, which compromises the reliability of bone-related index values.
Innovation Solution
A conductor layer with a reference potential is introduced between the two sensor panels to suppress mutual interference, where the conductor layer covers the imaging regions and can be made of materials like aluminum, copper, or tungsten, and is connected to the housing for ground potential or acts as a power supply potential with a switch to control its power state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two sensor panels are sequentially arranged in the thickness direction to enable energy subtraction imaging, then the capability to generate bone tissue images and soft tissue images is improved, but electromagnetic noise from one sensor panel propagates to the other sensor panel and degrades image quality
Solution Approach 1:
A conductor layer with reference potential is introduced as an intermediary component between the two sensor panels. This conductor layer acts as an electromagnetic shield that blocks the propagation of electromagnetic noise from one sensor panel to the other, while allowing both panels to maintain their sequential arrangement for energy subtraction imaging. The conductor layer thus mediates between the need for dual-panel functionality and the need to prevent mutual interference.
2Object-affected harmful factors
If a metal layer is provided between two sensor panels to filter soft ray components, then the radiation filtering function is improved, but the mutual interference between sensor panels through electromagnetic noise is not resolved
Solution Approach 1:
The conductor layer is designed to perform multiple functions simultaneously: it serves as an electromagnetic shield to block noise propagation between sensor panels, and can also function as a radiation filter to absorb soft ray components. By making the conductor layer multi-functional, the patent eliminates the need for separate components and resolves both the electromagnetic interference problem and maintains the radiation filtering capability.
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 configuration effectively prevents the propagation of electromagnetic noise between the sensor panels, enhancing the quality of radiographic images and improving the reliability of bone-related index values by reducing signal-noise ratio and electromagnetic interference.
Implementation Method 1
a conductor layer that is provided between the two sensor panels and has a reference potential... effectively prevents the propagation of electromagnetic noise between the sensor panels
Implementation Method 2
a scintillator that converts the radiation which has been incident into visible light and emits the visible light
Implementation Method 3
a light detection substrate in which the imaging region is formed and which detects the visible light emitted from the scintillator and converts the visible light into the charge
Implementation Method 4
a metal layer that is made of, for example, copper or tin and absorbs a large number of soft ray components in energy forming radiation
Data Source
AI summary
An electronic cassette has a configuration in which a first sensor panel and a second sensor panel are sequentially arranged in a thickness direction. The first sensor panel includes a first light detection substrate and a first scintillator. The periphery of the first scintillator is covered by a moisture-proof sealing layer. The sealing layer is made of a conductive material. The sealing layer is connected to the inner surface of a housing made of a conductive material through a connection portion. Therefore, the sealing layer has the same potential as the ground potential of the housing which is a reference potential and functions as a conductor layer.