Rotatable Collimation Part for Focused Radiotherapy
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Solution Overview
Problem
Traditional focused radiotherapy equipment is bulky and inflexible due to complex shielding and limited collimator combinations, which restricts the ability to achieve various field sizes and dose requirements effectively.
Innovation Solution
A focused radiotherapy apparatus with a rotatable collimation part featuring curved surfaces with multiple collimator and shielding options, allowing for increased collimation combinations by aligning different sets of collimators and shielding means with radioactive sources, and a movable switch part for beam focusing and shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional focused treatment head adopts the structure of shielding part, source part and collimation part sequentially arranged from the outside to the inside, then radiation shielding is effective, but the structure becomes very complicated and bulky
Solution Approach 1:
The patent combines the shielding part and collimation part into a single integrated collimation part that performs both functions. The collimation part includes collimators for beam shaping and shielding means for radiation protection, merging two previously separate components into one unified structure that reduces overall complexity while maintaining both shielding effectiveness and collimation functionality.
2Adaptability or versatility
If as many collimator combinations as possible are provided to obtain more collimation aperture combinations, then flexibility for different field sizes and dose requirements is improved, but the treatment space requirements increase
Solution Approach 1:
The patent employs a rotatable collimation part that can rotate relative to the source part and pre-collimation part. This dynamic mechanism allows a limited number of physical collimators to generate multiple collimation aperture combinations by rotating to different positions, thereby achieving high collimation flexibility without requiring a large number of static collimators that would consume excessive treatment space.
Solution Approach 2:
The patent adds rotational motion as a new dimension to the collimation system. Instead of only providing multiple collimators in static arrangements (two-dimensional arrangement), the system utilizes rotational movement to create a third dimension of variability, allowing the same physical collimators to produce different aperture combinations through rotation, thus increasing versatility without proportionally increasing space requirements.
3Power
If Go-60 radioactive sources are used for focused radiotherapy, then treatment effectiveness is improved, but intense radiation requires very thick and heavy shielding structure
Solution Approach 1:
The patent extracts and isolates the radioactive sources into a separate, dedicated source part that is enclosed within the integrated collimation part. This separation allows the shielding means to be precisely positioned around only the radioactive sources rather than the entire treatment head, enabling more efficient shielding design that reduces overall shielding weight while maintaining protection against intense radiation from the Go-60 sources.
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
Enhances treatment plan flexibility and reduces equipment complexity by increasing the number of collimation combinations, while maintaining effective radiation shielding and beam control.
Implementation Method 1
a source part provided with a plurality of radioactive sources
Implementation Method 2
a pre-collimation part fixedly connected to the source part, the pre-collimation part comprising a plurality of pre-collimation holes
Implementation Method 3
at least one curved surface on which a plurality of sets of collimators and/or shielding means in different sizes arranged corresponding to the radioactive sources
Data Source
AI summary
The present invention provides a focused radiotherapy apparatus comprising: at least one source part, provided with a plurality of radioactive sources arranged thereon; at least one collimation part enclosing the source part, and comprising a plurality of collimators aligned corresponding to the radioactive sources, the radiation rays emitted by the plurality of radioactive sources passing through the collimators and then converging to a focal point for treatment.