Radiation Dose Verification via Predicted Auxiliary Images
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Solution Overview
Problem
Current radiation dose verification methods in medical radiation therapy lack accuracy in reconstructing actual three-dimensional radiation doses received by patients, leading to potential errors in treatment planning and execution.
Innovation Solution
A system and method for dose verification using a computing device to obtain predicted radiation auxiliary images, determine a target dose strategy, and reconstruct radiation doses in real-time based on actual radiation auxiliary images, allowing for accurate and continuous monitoring of radiation delivery during treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional EPID image comparison method is used for dose verification, then the measurement process is simple, but the measurement precision of actual radiation dose is insufficient
Solution Approach 1:
The patent introduces an intermediary computational model that transforms the direct comparison of EPID images into a multi-step process involving predicted image generation, actual image acquisition, and difference analysis. This intermediary layer enables more precise radiation dose reconstruction by accounting for various factors such as patient anatomy changes and treatment delivery variations, thereby resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The patent transitions from two-dimensional EPID image comparison to three-dimensional radiation dose reconstruction by incorporating depth information and volumetric data. This dimensional expansion allows for more accurate dose verification by reconstructing the actual radiation dose distribution in 3D space, addressing the limitation of traditional 2D image comparison methods.
2Reliability
If real-time radiation dose reconstruction is implemented, then the reliability of treatment monitoring is improved, but the use of energy and computational resources increases
Solution Approach 1:
The patent performs preliminary actions by pre-calculating and storing treatment plans, dose distributions, and imaging parameters before actual treatment delivery. This preparatory work enables faster real-time dose reconstruction during treatment by reducing the computational burden to comparing actual measurements against pre-established models, thereby improving reliability while managing energy consumption.
Solution Approach 2:
The patent implements periodic action by conducting radiation dose reconstruction at specific intervals and key treatment stages rather than continuously. This periodic monitoring approach maintains treatment reliability by detecting significant deviations while reducing overall computational energy consumption compared to continuous real-time reconstruction.
Data Source
AI summary
The embodiments of the present disclosure provide a method for dose verification. The method may include obtaining a predicted radiation auxiliary image of a target object at a target radiation time point; determining a target dose strategy based on the predicted radiation auxiliary image; performing, based on the target dose strategy, treatment in a current radiation fraction on the target object.