Radiation Dose Control With Refined Control Points and Feedback
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Solution Overview
Problem
Existing radiation therapy systems face challenges in precision and accuracy due to control delays and radiation overshooting during dose delivery, particularly at dose control points, which affect the efficiency and stability of the therapy.
Innovation Solution
A method and device that subdivides dose control points into refined control points, performing real-time statistical collection and adjusting target doses based on actual doses to ensure precise dose delivery, using hardware-controlled signals to switch off radiation pulses when target doses are reached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If dose control points are used in existing radiation therapy systems, then the therapy plan can be executed, but control delays and radiation overshooting occur during dose delivery
Solution Approach 1:
The patent divides each dose control point into multiple refined control points (e.g., subdividing a 2 Gy control point into multiple 0.2-0.5 Gy sub-points). This segmentation allows the system to deliver smaller, more manageable dose increments with shorter control cycles, reducing the control delay and preventing radiation overshooting while maintaining overall dose delivery precision.
2Manufacturing precision
If dose control points are used in existing radiation therapy systems, then the therapy plan can be executed, but radiation overshooting occurs during dose delivery
Solution Approach 1:
The patent implements real-time feedback mechanisms where the actual delivered dose at each refined control point is measured and compared against the target dose. The system dynamically adjusts subsequent dose delivery based on this feedback, correcting any deviations before they accumulate into significant overshooting, thereby improving both accuracy and stability.
Solution Approach 2:
The system transitions from static dose control points to dynamic refined control points that can be adjusted in real-time based on actual delivery conditions. This allows the therapy plan to adapt during execution, maintaining reliability even when delivery conditions vary.
3Productivity
If dose control points are used in existing radiation therapy systems, then the therapy plan can be executed, but operation efficiency is reduced
Solution Approach 1:
The patent performs preliminary segmentation of dose control points into refined control points before therapy execution. This pre-processing allows the control system to operate with simpler, smaller dose increments during actual delivery, improving efficiency by reducing control delays and overshooting corrections, while the complexity is managed in the planning phase rather than real-time execution.
Data Source
AI summary
Provided is a method controlling a dose. The method includes: acquiring a therapy plan; dividing each of the plurality of dose control points in the therapy plan into a plurality of refined control points, wherein each of the plurality of refined control points corresponds to a target dose; performing the therapy plan, and performing a real-time statistical collection on an actual dose; and adjusting, based on a target dose and the actual dose at a refined control point that is executed, a target dose at a refined control point that is not executed in real time.