Multi-Aperture Collimator for Synchronous Beam Control
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Solution Overview
Problem
Current CT scanners with multiple cone beam sources face challenges in adjustable synchronized collimation, requiring complex control of multiple collimators which is not yet commercially viable.
Innovation Solution
A multisource collimation system with a multi-aperture collimator arrangement, featuring adjustable beam blocking elements and actuators to alter aperture dimensions synchronously, allowing for continuous or discrete variation of beam widths and shapes to optimize radiation coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple collimators are used for each radiation source, then beam collimation precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple collimators into a single integrated multi-aperture collimator assembly that serves multiple radiation sources simultaneously. This single collimator features multiple apertures that can be independently adjusted to control beams from different sources, reducing the overall number of collimators while maintaining precise collimation control for each beam.
Solution Approach 2:
The multi-aperture collimator is designed to perform multiple functions: it controls beams from multiple radiation sources simultaneously, allows independent adjustment of each aperture, and can be positioned at different locations along the beam path. This universal design eliminates the need for separate dedicated collimators for each source.
2Adaptability or versatility
If multiple independent collimators are controlled separately, then beam geometry control flexibility is improved, but ease of operation deteriorates
Solution Approach 1:
The patent merges the control mechanisms of multiple collimators into a single integrated control system. The multi-aperture collimator can be controlled as one unit while maintaining independent adjustability of each aperture, simplifying the operational interface while preserving the flexibility to control each beam's geometry independently.
3Device complexity
If a single collimator serves multiple sources, then device complexity is reduced, but manufacturing precision may deteriorate
Solution Approach 1:
The single collimator is segmented into multiple independent apertures, each capable of independent adjustment. This segmentation allows each aperture to be optimized for its specific beam while maintaining the simplicity of a single integrated collimator structure. The segmentation enables precise control without requiring multiple separate collimators.
Data Source
AI summary
Disclosed is a collimator assembly for a multi-radiation-source medical imaging system (e.g. CT) and a medical imaging system utilizing the collimator. According to some embodiments of the present invention, there is provided a collimator assembly including at least two apertures, which apertures are adjustable substantially synchronously by one or more actuators.