Neutron Irradiation Monitoring for Real-Time Dose Correction
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Solution Overview
Problem
Traditional radiotherapy methods, such as photon or electron therapy, cause significant harm to normal tissues due to their physical limitations and have poor efficacy on radio-resistant tumors like glioblastoma multiforme and melanoma, while neutron capture therapy faces challenges in accurately controlling neutron irradiation dosages and preventing operator errors during treatment planning.
Innovation Solution
A neutron capture therapy apparatus with a monitoring system that includes a detection system for real-time parameter monitoring, a correction system to adjust neutron dosage rates, and a display system to prevent misoperations, ensuring accurate and safe neutron irradiation by detecting and correcting deviations from preset parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional photon or electron therapy is used, then treatment coverage is broad, but harm to normal tissues increases
Solution Approach 1:
The patent segments the radiation delivery process into two distinct phases: first delivering a sub-curative dose of photons/electrons to cover the entire tumor volume, then adding a targeted neutron capture therapy component. This segmentation allows each modality to perform its optimal function while minimizing combined harm to normal tissues.
Solution Approach 2:
The patent applies local quality by concentrating the high-RBE neutron irradiation specifically at the tumor site after initial photon/electron treatment. The neutron beam is precisely targeted to the tumor region, providing intense local treatment while leaving surrounding normal tissues exposed only to the lower-dose initial phase, thus reducing overall harm to normal tissues.
2Reliability
If neutron capture therapy is used to treat radio-resistant tumors, then treatment efficacy improves, but control accuracy of irradiation dosage decreases
Solution Approach 1:
The patent implements feedback control by continuously monitoring the cumulative irradiation dosage during treatment and comparing it against the prescribed total dose. The system provides real-time feedback to the operator, allowing dynamic adjustment of treatment parameters to ensure the total dosage remains within the prescribed limits, thereby maintaining control accuracy despite the complexity of neutron capture therapy.
Solution Approach 2:
The patent applies preliminary action by first delivering a calculated sub-curative dose of photons or electrons before initiating neutron capture therapy. This preliminary treatment establishes a baseline dosage, and the subsequent neutron therapy is carefully controlled to deliver the remaining required dose, ensuring the total remains within prescribed limits while maintaining treatment efficacy for radio-resistant tumors.
3Ease of operation
If manual control of irradiation parameters is allowed, then operational flexibility increases, but risk of operator error increases
Solution Approach 1:
The patent applies self-service by implementing automated systems that perform dosage calculation, treatment planning, and real-time monitoring without requiring manual intervention for each parameter adjustment. The system automatically manages the complex dosimetry requirements of neutron capture therapy, reducing operational flexibility but eliminating operator errors in dosage control and treatment delivery.
Solution Approach 2:
The patent introduces an intermediary computerized control system that acts as a mediator between the operator and the irradiation delivery mechanisms. This intermediary automatically processes treatment parameters, calculates dosages, and controls beam delivery, reducing direct manual control while maintaining operational flexibility through programmed treatment protocols and automated adjustment capabilities.
4Manufacturing precision
If preset irradiation parameters are used, then treatment standardization improves, but adaptability to real-time conditions decreases
Solution Approach 1:
The patent applies dynamics by designing a treatment system that combines preset standardized protocols with real-time adaptability. The system maintains standardized treatment frameworks for consistency but incorporates real-time monitoring and adjustment capabilities that allow dynamic modification of treatment parameters based on actual patient response and measured dosage accumulation, balancing standardization with adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus enhances the accuracy of neutron irradiation, minimizing harm to normal tissues and improving treatment efficacy by adjusting neutron dosage rates and preventing operator errors, thereby ensuring precise delivery of therapeutic neutron beams.
Implementation Method 1
a neutron beam irradiation system configured to generate a neutron beam
Implementation Method 2
a detection system configured to detect real-time irradiation parameters during a neutron beam irradiation therapy
Data Source
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AI summary
Disclosed are a neutron capture therapy apparatus and the operation steps of a monitoring system therefor. The neutron capture therapy apparatus comprises a neutron beam irradiation system, a detection system and the monitoring system, wherein the neutron beam irradiation system is configured for generating a neutron beam, and the detection system is configured for detecting real-time irradiation parameters during a neutron beam irradiation therapy process; and the monitoring system is configured for controlling the whole neutron beam irradiation process and comprises an input part for inputting preset irradiation parameters, a determination part for determining whether the irradiation parameters need to be corrected and a correction part for correcting some of the irradiation parameters when the determination part determines that the irradiation parameters need to be corrected, and when the ratio of the real-time neutron dose detected by the detection system to a preset neutron dose is greater than or equal to a preset value, the determination part of the monitoring system determines that the irradiation parameters need to be corrected.