Particle Beam Treatment System with Real-Time Dose Display
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Solution Overview
Problem
Current particle beam treatment systems face challenges in accurately irradiating affected parts due to changes in the fixed position of the affected part or internal organ conditions, leading to reduced reproducibility and increased exposure dose, as well as lengthy QA processes and unnecessary X-ray photography.
Innovation Solution
A particle beam treatment system and method that includes a three-dimensional image acquisition component, a dose distribution display component, and a selection component to update treatment plans based on real-time dose distributions, allowing for accurate irradiation even when conditions differ from the initial plan, without requiring movement of the treatment bed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the treatment bed is moved after X-ray photography to adjust patient position, then the positional accuracy of the treatment bed is improved, but the time required for QA testing increases and additional X-ray photography is needed
Solution Approach 1:
The patent performs X-ray photography and position verification before moving the treatment bed, rather than after. This preliminary action allows the position to be confirmed in advance, eliminating the need for post-movement verification and additional X-ray photography, thus reducing QA testing time while maintaining positional accuracy
Solution Approach 2:
The patent skips the step of moving the treatment bed after X-ray photography by establishing the correct position beforehand. This eliminates unnecessary intermediate steps and redundant verification processes, streamlining the workflow without compromising precision
2Reliability
If additional X-ray photography is performed to confirm treatment bed position, then the reliability of position verification is improved, but the exposure dose of the patient increases
Solution Approach 1:
The patent performs all necessary position verification through X-ray photography before moving the treatment bed. This preliminary verification ensures reliability of position confirmation without requiring additional X-ray exposure after the bed is moved, thereby minimizing patient radiation dose while maintaining verification reliability
3Measurement precision
If the treatment plan is updated based on real-time three-dimensional images, then the accuracy of irradiation targeting is improved, but the complexity of the treatment system increases
Solution Approach 1:
The patent implements a feedback mechanism where real-time three-dimensional images acquired during treatment are compared with the original treatment plan, and the plan is updated based on this feedback. This closed-loop approach improves irradiation targeting accuracy by adapting to actual patient anatomy while using automated comparison and adjustment algorithms to manage system complexity
4Reliability
If the treatment bed position is reset daily, then the reproducibility of patient positioning is improved, but the time required for daily setup increases
Solution Approach 1:
The patent performs X-ray photography and position verification before moving the treatment bed, establishing the correct position in advance. This preliminary action enables accurate positioning without requiring time-consuming post-movement adjustments and verification, thus improving position reproducibility while reducing daily setup time
Data Source
AI summary
According to an embodiment, a particle beam treatment system has: a CT device that is a three-dimensional image acquisition part installed in a treatment room for acquisition of a three-dimensional internal image on a day of treatment; a dose distribution display part that displays a dose distribution in the three-dimensional image acquired on the day of treatment and a dose distribution in treatment plan data designed in advance; a treatment management device that is a selection part to select whether or not to change the treatment plan data based on the dose distribution in the three-dimensional image acquired on the day of treatment and the dose distribution in treatment plan data designed in advance; and an irradiation part that irradiates an affected part with a particle beam according to the treatment plan data based on selection made by the treatment management device.