Focusing Grid Inclining Mechanism for Radiation Source Alignment
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Solution Overview
Problem
Radiation image taking apparatuses with focusing grids face a significant decrease in transmittance and selectivity of radiation when the radiation source is moved, leading to compromised image quality due to misalignment of the grid focus with the radiation source.
Innovation Solution
A radiation image taking apparatus with a focusing grid that includes a moving mechanism to adjust the radiation source's position and an inclining mechanism to align the grid's focus with the moved radiation source, ensuring that the perpendicular from the source crosses the grid's transparent and opaque areas, thereby maintaining optimal radiation transmission and selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the radiation source is moved to position it right above the breast, then the incoming radiation becomes normal to the breast improving image quality, but the focus of the focusing grid becomes offset from the radiation source causing considerable decrease in transmittance and selectivity
Solution Approach 1:
The patent applies the dynamics principle by making the focusing grid movable and adjustable in angle. The grid can be dynamically repositioned and inclined to different angles to match the moved radiation source position, ensuring continuous optimal performance regardless of source location. This transforms a static grid system into a dynamic one that adapts to changing operational conditions.
Solution Approach 2:
The patent employs parameter changes by adjusting the angular position and orientation of the focusing grid. By changing the grid's inclination angle and spatial parameters, the system maintains proper alignment between the grid focus and the radiation source even when the source is moved, thereby preserving transmittance and selectivity parameters.
2Object-affected harmful factors
If a focusing grid is used to remove scattered rays, then scattered rays are effectively blocked improving image contrast, but when the radiation source is moved the grid focus offsets causing decrease in transmittance
Solution Approach 1:
The focusing grid is designed with dynamic adjustment capabilities, allowing it to be repositioned and reoriented based on radiation source location. This dynamic behavior ensures that the grid maintains its ability to block scattered rays while simultaneously preserving direct radiation transmittance, even when the source is moved from the central position.
Solution Approach 2:
The system incorporates feedback mechanisms that detect the radiation source position and automatically adjust the grid's angular orientation accordingly. This feedback loop ensures that the grid focus remains aligned with the moved source, maintaining both scattered ray removal effectiveness and radiation transmittance.
3Adaptability or versatility
If the radiation source is moved for imaging, then positioning flexibility is improved, but the perpendicular from the source no longer crosses the borderline between transparent and opaque areas of the grid causing misalignment
Solution Approach 1:
The patent implements a dynamic alignment system where the focusing grid can be inclined and repositioned in real-time. This dynamic capability allows the grid to automatically realign with the moved radiation source, ensuring that the perpendicular from the source continues to cross the borderline between transparent and opaque areas, thereby maintaining imaging precision despite source relocation.
Solution Approach 2:
The patent replaces fixed mechanical positioning with an adjustable mechanical system. Instead of relying on a fixed grid position, the system uses movable and inclinable grid mechanisms that can be precisely positioned to maintain proper geometric relationships with the radiation source, ensuring alignment precision is preserved even with source movement.
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 solution allows for consistent high-quality radiation imaging without a drop in transmittance or selectivity, even when the radiation source is moved, ensuring sharp and detailed images are obtained.
Implementation Method 1
a focusing grid for removing the scattered rays of the radiation that is incident on the radiation image detector
Implementation Method 2
consisting of radiation-transparent and opaque areas that alternate in a direction parallel to the radiation-receiving plane
Data Source
AI summary
There is provided a radiation image taking apparatus having: a radiation source for irradiating an object; a radiation image detector; a focusing grid provided between the radiation source and the radiation image detector and consisting of radiation-transparent and opaque areas that alternate in a direction parallel to the radiation-receiving plane of the radiation image detector; a moving means that moves the radiation source in such a direction that the perpendicular from the radiation source to the focusing grid crosses the borderline between a radiation-transparent area in the focusing grid and the adjacent radiation-opaque area; and an inclining means that inclines the focusing grid in such a way that the focus of the focusing grid is brought into agreement with the radiation source that has been moved by the moving means.