Radiation Control Device Position Filter Model
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Solution Overview
Problem
Existing methods for calculating positional information for radiation treatment accuracy in tracking irradiation are limited by inaccuracies in positional data, which can lead to errors in radiation dosage delivery.
Innovation Solution
A control device and method that includes a position-related information acquisition portion, a model generation portion, and a particular site position calculation portion, where the model is equipped with a filter to minimize errors and improve positional accuracy by using a template with parameters set to match a teacher signal, and can generate multiple models with filters at different positions to select the most accurate one.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a filter is added to regulate the amount of change in position output, then the accuracy of positional information is improved, but the device complexity increases
Solution Approach 1:
A filter is introduced as an intermediary component within the model to regulate the amount of change in position output. This filter acts as a mediator between the raw position data and the final output, smoothing out excessive variations while maintaining accuracy. The filter serves as a buffer that processes the position information and delivers refined output without requiring complex external control systems.
Solution Approach 2:
The model parameters are optimized to minimize the error between the filtered output and the teacher signal. By adjusting parameters such as filter coefficients, smoothing factors, and error weights, the system achieves high positional accuracy without increasing structural complexity. The parameter optimization allows the existing filter structure to adapt to different scenarios and maintain precision.
2Measurement precision
If multiple models with filters at different positions are generated, then the accuracy of position calculation is improved, but the loss of time increases
Solution Approach 1:
Multiple models with filters positioned at different locations are pre-generated and stored before actual position calculation is needed. This preliminary preparation allows the system to have ready-to-use models for various scenarios, eliminating the need for time-consuming model creation during real-time operation. The pre-generated models can be quickly selected based on the current situation without delays.
Solution Approach 2:
The system dynamically selects the most appropriate pre-generated model based on real-time conditions and the teacher signal. Rather than using a fixed model, the system adapts by choosing from multiple pre-prepared models, allowing it to respond flexibly to changing conditions without the time penalty of generating new models on the fly.
Data Source
AI summary
Provided is a control device for a radiation irradiation device including a position-related information acquisition portion that acquires position-related information related to a position of a particular site; a model generation portion that generates a model outputting the position of the particular site based on the position-related information; and a particular site position calculation portion that outputs the position of the particular site based on the position-related information acquired by the position-related information acquisition portion, by using the model generated by the model generation portion. The model generated by the model generation portion is provided with a filter regulating an amount of change in the position of the particular site output by the model.