Radiotherapy Dosage Verification via Optical Field Detection
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Solution Overview
Problem
The existing methods for radiation dosage verification in radiotherapy devices are inefficient and unsafe, as they require manual measurement and cannot be performed in real-time, leading to low accuracy and safety concerns.
Innovation Solution
A dosage verification method that acquires and compares reference and actual light field information to determine if the radiation dosage meets pre-set requirements, allowing for real-time adjustments and verification during the radiotherapy process, using a radiotherapy device equipped with a detector and processor to analyze and adjust the treatment plan accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual measurement using film or ionization chamber is performed, then radiation dosage verification is possible, but the process becomes complex and radiation risk increases
Solution Approach 1:
The patent replaces manual mechanical measurement processes with an automated optical detection system. The light field detection device automatically captures and analyzes light field information, substituting the manual operation of film or ionization chamber measurements with an automated optical system that reduces both complexity and radiation exposure.
Solution Approach 2:
The patent creates an optical copy or representation of the radiation light field that can be analyzed without direct radiation measurement. By detecting and analyzing light field information optically, the system creates a surrogate measurement method that avoids the complexities and risks of direct radiation dosimetry while maintaining verification capability.
2Measurement precision
If manual measurement is used for dosage verification, then radiation dosage can be measured, but efficiency is low and real-time verification during radiotherapy is not possible
Solution Approach 1:
The patent implements continuous light field detection during the radiotherapy process. The detection device operates continuously to monitor light field parameters in real-time, enabling ongoing verification rather than discrete manual measurements. This continuous monitoring maintains measurement accuracy while dramatically improving verification efficiency and enabling real-time quality assurance.
3Reliability
If manual measurement methods are employed, then radiation dosage verification is achievable, but safety is compromised due to radiation risk to operators
Solution Approach 1:
The patent introduces an optical intermediary system that detects light field parameters without requiring operators to be exposed to radiation. The light field detection device acts as an intermediary between the radiation source and the verification process, allowing remote or automated measurement that eliminates operator radiation exposure while maintaining verification reliability.
Data Source
AI summary
A dosage verification method for a radiotherapy device includes: acquiring reference optical field information about radioactive rays, wherein the reference optical field information includes the dosage distribution of a reference optical field; acquiring actual optical field information about the radioactive rays; comparing and analyzing the acquired actual optical field information about the radioactive rays and the acquired reference optical field information; and determining whether the actual optical field information is in a range of pre-set optical field information, wherein the pre-set optical field information is optical field information determined according to the reference optical field information.