Electromagnetic Radiation Poly-Capillary Collimator for Low-Scatter Imaging
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Solution Overview
Problem
Conventional x-ray collimators fail to effectively filter out non-diagnostically valuable photons, leading to low-resolution images due to scatter and divergence issues, which affect the quality of medical imaging.
Innovation Solution
An electromagnetic radiation collimator with an elongated housing containing an array of parallel radiolucent beam paths, constructed from radio-opaque materials, that selectively allows electromagnetic radiation to pass only when it is in line with or near the longitudinal axis, filtering out divergent beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional collimators are used to filter x-ray beams, then some scatter reduction is achieved, but non-diagnostically valuable photons are not effectively filtered out, resulting in low-resolution images
Solution Approach 1:
The collimator is divided into multiple parallel capillary channels, each acting as an independent beam path. This segmentation allows selective transmission of x-rays traveling in specific directions while blocking scattered photons, thereby improving image resolution without excessive scatter reduction that would lose diagnostic information
Solution Approach 2:
Different regions of the collimator have different capillary orientations and dimensions tailored to specific imaging needs. The capillary walls are positioned at precise angles to allow transmission of unscattered or minimally scattered photons while blocking scattered radiation, optimizing both resolution and diagnostic quality for different anatomical regions
2Measurement precision
If a two-dimensional grid collimator is used to block photons with large angles, then some scatter is reduced, but photons with lower angles may still be considered scattered and allowed through, reducing image quality
Solution Approach 1:
The collimator transitions from a two-dimensional grid structure to a three-dimensional array of parallel capillary channels. This dimensional change enables precise angular selection of x-ray beams by utilizing the longitudinal dimension of the capillaries, allowing only photons traveling nearly parallel to the beam axis to pass through, thereby improving image clarity while effectively blocking scattered photons
3Measurement precision
If conventional collimation is used to reduce scatter, then some image quality improvement is achieved, but the beam paths remain divergent, preventing accurate determination of radio-lucency along parallel pathways
Solution Approach 1:
The collimator is segmented into multiple parallel capillary channels, each creating a distinct beam path. This segmentation transforms the divergent beam into multiple parallel beams, allowing accurate measurement of radio-opacity along specific parallel pathways while maintaining the ability to cover a broad anatomical area
Solution Approach 2:
The capillary dimensions, wall thickness, and orientation angles are precisely controlled to transform the beam geometry from divergent to parallel. By adjusting these parameters, the collimator creates parallel beam paths that enable accurate radio-opacity measurements while maintaining adequate beam intensity for diagnostic imaging
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 enhances image resolution by ensuring only parallel or nearly parallel beams reach the detector, reducing scatter and improving the clarity and accuracy of diagnostic images.
Implementation Method 1
The device is constructed out of radio-opaque material, which creates a physical barrier to the passage of unwanted/non-parallel beams
Implementation Method 2
An electromagnetic radiation collimator with an elongated housing containing an array of parallel radiolucent beam paths
Data Source
AI summary
An electromagnetic radiation collimator comprising: a radiopaque elongated housing having a first end and a second end, wherein the housing houses an array of parallel radiolucent beam paths, wherein each of the beam paths extend from the first end to the second end, wherein each of the beam paths has an entrance aperture at the first end, and an exit aperture at the second end; the entrance aperture through which source electromagnetic radiation passes into the beam paths, wherein the beam paths emits an electromagnetic radiation beam from the exit aperture when the source electromagnetic radiation beams are in line with the longitudinal axis of the beam path or having a predetermined angle of deviation from the longitudinal axis of the beam path.