Rotary Gamma Therapy Imaging Device with Diagnostic Sources
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Solution Overview
Problem
Current radiotherapy devices lack real-time imaging capabilities, which affects the accuracy of radiation dose delivery and precision in targeting tissues, and their complex structures increase manufacturing costs and difficulties.
Innovation Solution
Incorporating a diagnostic imaging system with low activity cobalt-60 radiation sources, a detector, and a data processing system within the radiotherapy device, along with a single-layer and double-support structure to enable real-time monitoring and dose verification, and simplify the mechanical design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a real-time imaging system is added to the radiotherapy device, then the measurement precision and reliability of radiation dose delivery are improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the diagnostic imaging system with the existing radiotherapy device structure by integrating the diagnostic radiation sources into the source carrier. The detector is positioned at the rotary ring to capture images during rotation, merging imaging functionality with the therapeutic delivery system to achieve real-time monitoring without requiring a completely separate imaging system.
Solution Approach 2:
The source carrier serves multiple functions: it holds both therapeutic radiation sources for delivering radiation dose and diagnostic radiation sources for real-time imaging. The rotary ring also serves dual purposes by supporting both the therapeutic beam delivery and the diagnostic image detection, allowing one component to perform multiple critical functions.
2Stability of the object's composition
If multiple inlaid slip-on rotary rings are used in the rotary support, then the structural stability is improved, but the manufacturing difficulty and cost increase
Solution Approach 1:
The patent extracts and eliminates the complex multi-ring rotary support structure from the design. Instead of using multiple inlaid slip-on rotary rings, the invention uses a simplified single rotary ring structure that achieves the necessary rotational stability without the manufacturing complexity of multiple nested rings.
Solution Approach 2:
The rotary support structure is segmented into distinct functional components: a single rotary ring for rotation, separate source carrier and collimator carrier for radiation delivery, and independent detector mounting for imaging. This segmentation allows each component to be manufactured and assembled independently, reducing overall manufacturing difficulty.
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 precise and accurate radiotherapy by enabling automatic beam positioning, real-time monitoring of target motion, and dose measurement, while reducing manufacturing complexity and costs by enlarging the treatment space and improving the radiotherapy effect.
Implementation Method 1
The diagnostic radiation sources are low activity cobalt-60 radiation sources, positioned at the center of the source carrier. The beam of the radiation sources passes the axis of the rotary ring, and irradiates into the detector positioned oppositely to the source carrier
Implementation Method 2
The detector is positioned at the rotary ring. The detector and the diagnostic radiation sources are oppositely positioned radially along the rotary ring and along the rotary axis. The detector makes a response after receiving radiation information from the diagnostic radiation sources, and outputs detection information for image testing
Implementation Method 3
Multiple radiation sources distributed in the source carrier focus and irradiate on a shared focus at the rotary axis through radiation channel in the source carrier and the collimator carrier
Data Source
AI summary
The invention involves an imaging device used in rotary focused gamma-ray radiotherapy. The invention includes a frame, a rotary ring positioned at the frame, and a source carrier and a collimator carrier that can rotate around a rotary axis respectively. The source carrier is equipped inside with multiple radiation sources. The collimator carrier is equipped inside with a corresponding beam channel to the radiation sources, which focus at a shared focus of the rotary axis through the beam channel. The imaging device of the radiotherapy system also includes a diagnostic imaging system, consists of diagnostic radiation sources, a detector and a data processing system. By means of diagnostic imaging system of the invention, automatic beam positioning, real-time monitoring of treatment target motion, real-time monitoring and verification of radiation dose can be done during treatment, ensuring more accurate and improved radiotherapy effect.