Radiation Imaging System Two-Dimensional Movement for Wide Coverage
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Solution Overview
Problem
Existing radiation imaging systems struggle to perform long-length imaging with sufficient width in the transverse direction, particularly when imaging subjects with irregular body shapes, as they often require multiple radiation exposures and lack effective methods to maintain the positions of imaging apparatuses orthogonal to the longitudinal direction.
Innovation Solution
A radiation imaging system with a holding unit that allows the radiation imaging apparatuses to be movable in a direction intersecting the arrangement direction, enabling relative shifting of partial images to achieve wider coverage without sacrificing image quality, and utilizing a collimator with adjustable radiation shielding plates to optimize irradiation areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If multiple radiation imaging apparatuses are arranged in a row in the longitudinal direction to perform long-length imaging, then the longitudinal coverage is improved, but the transverse width coverage becomes insufficient
Solution Approach 1:
The patent applies dimensional change by enabling the radiation imaging apparatus to move not only in the longitudinal direction (arrangement direction) but also in the transverse direction (intersecting direction) through the holding unit. This two-dimensional movement capability allows the system to achieve both long longitudinal coverage and sufficient transverse width coverage simultaneously, resolving the contradiction between longitudinal extension and transverse coverage.
2Area of moving object
If radiation imaging is performed by dividing the observation area into multiple sections, then the transverse width coverage is improved, but the subject's body movements and exposure amount increase
Solution Approach 1:
The patent implements dynamics by making the radiation imaging apparatus movable in both longitudinal and transverse directions through the holding unit. This dynamic positioning capability allows the system to capture the entire long-length observation area in a single exposure by adjusting the apparatus position, eliminating the need for multiple sequential exposures and thereby reducing subject movement and total exposure time.
Solution Approach 2:
The system performs preliminary positioning of the radiation imaging apparatus in both longitudinal and transverse directions before the actual exposure. The holding unit pre-positions the apparatus to cover the entire observation area, allowing a single comprehensive exposure that captures the full long-length region without requiring subsequent repositioning or additional exposures.
3Device complexity
If radiation imaging apparatuses are fixed in position, then the device structure is simple, but the ability to adjust coverage area and optimize imaging positions is limited
Solution Approach 1:
The patent transforms the fixed positioning system into a dynamic one by introducing the holding unit with movement mechanisms in both longitudinal and transverse directions. This dynamic structure maintains relative simplicity while providing versatile positioning capabilities, allowing the radiation imaging apparatus to adapt to different observation areas and optimize imaging positions without significantly complicating the overall device architecture.
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
Enables efficient long-length imaging with improved width coverage, reducing subject movement and exposure, while maintaining high image quality by allowing overlapping and relative positioning of radiation imaging apparatuses, and optimizing radiation irradiation areas through adjustable collimator configurations.
Implementation Method 1
a radiation imaging apparatus configured to convert an irradiated radiation transmitted through an object into an image signal serving as a partial image of the object
Data Source
AI summary
In a radiation imaging system, which obtains a radiation image of an object based on a plurality of image signals, includes a radiation imaging apparatus, which includes a plurality of pixels arranged in a two-dimensional matrix, configured to convert an irradiated radiation transmitted through an object into an image signal serving as a partial image of the object. In the radiation imaging system, a holding unit for holding the radiation imaging apparatus holds the radiation imaging apparatus to be movable in a direction intersecting a direction in which positions to obtain a plurality of partial images are arranged.