Radiation Therapy Positioning Using Image-Guided Deviation Correction
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Solution Overview
Problem
Conventional radiation therapy systems, such as photon or electron therapy, often cause damage to normal tissues due to inaccurate positioning and varying sensitivity of neoplastic cells, while neutron capture therapy systems like BNCT require precise positioning to avoid excessive irradiation and ensure therapeutic efficacy.
Innovation Solution
A radiation therapy system with an irradiation module, image module, treatment planning module, positioning module, and processing module to accurately determine and adjust the position of the to-be-irradiated body using image data and markers, ensuring high accuracy and safety in neutron capture therapy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional radiation therapy is used, then treatment can be delivered, but positioning accuracy is poor and normal tissues are damaged
Solution Approach 1:
The system performs preliminary positioning verification before actual therapy delivery. Image data is captured and processed in advance to determine the actual position of the to-be-irradiated body, allowing correction of positioning deviations before treatment begins, thus preventing damage to normal tissues while ensuring accurate target irradiation
Solution Approach 2:
The system establishes a feedback loop where image data is captured, processed to determine actual position, compared with planned position, and used to generate correction information. This feedback mechanism enables real-time positioning verification and correction, improving positioning accuracy and preventing unnecessary radiation damage to normal tissues
2Measurement precision
If positioning verification is performed manually, then accuracy can be checked, but operating time is long and complexity is high
Solution Approach 1:
The system replaces manual positioning verification with an automated image processing system. Image data is automatically captured, processed, and analyzed by a processing module to determine actual position, eliminating manual measurement and calculation operations. This automation significantly reduces operating time while maintaining or improving verification accuracy
Solution Approach 2:
The system enables self-service positioning verification where the processing module automatically processes image data, determines position information, calculates deviations, and generates correction instructions without requiring manual intervention. This self-service capability reduces operating time and complexity while ensuring consistent and accurate positioning verification
Data Source
AI summary
A radiation therapy system, especially, a neutron capture therapy system, and a positioning method thereof are provided. The positioning method includes: determining a target position of a to-be-irradiated body based on a treatment plan; moving the to-be-irradiated body to a positioning position according to the target position; obtaining second image data of the to-be-irradiated body and a reference object; determining first position information based on the treatment plan, and determining second position information based on the second image data; calculating a deviation value between the positioning position and the target position based on the first position information and the second position information; and adjusting a position of the to-be-irradiated body based on the deviation value.