Radiation Irradiation System with Selective Neutron and Photon Simulation
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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 against radio-resistant tumors, while neutron capture therapy systems like BNCT require lengthy and resource-intensive Monte Carlo simulations for dose calculation.
Innovation Solution
A radioactive ray irradiation system that screens elements influencing neutron and photon simulations based on their weight proportions and reaction intensities, employs parallel computing, variance reduction techniques, and non-uniform meshes to optimize dose calculation, reducing simulation time and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Monte Carlo method is used for dose calculation in neutron capture therapy, then calculation accuracy is improved, but calculation time and memory consumption increase significantly
Solution Approach 1:
The patent extracts and removes less important elements from the simulation model while retaining key elements that significantly impact dose calculation accuracy. This selective extraction reduces the complexity of Monte Carlo simulations, thereby decreasing calculation time and memory consumption while maintaining acceptable accuracy for clinical treatment planning.
Solution Approach 2:
The patent applies different levels of simulation detail to different regions of the treatment field. High-precision Monte Carlo simulation is applied only to critical areas where dose accuracy is most important, while less critical regions use simplified models. This local differentiation optimizes the balance between calculation accuracy and computational efficiency.
2Adaptability or versatility
If universal Monte Carlo programs (MCNP, Geant 4) are used for radiotherapy calculation, then comprehensive simulation capability is improved, but calculation efficiency deteriorates due to lack of field-specific optimization
Solution Approach 1:
The patent segments the treatment planning process into distinct modules: comprehensive Monte Carlo simulation for overall dose distribution, and optimized local calculation methods for specific regions. This segmentation allows the system to leverage the comprehensive capability of universal Monte Carlo programs while improving efficiency through specialized optimization for radiotherapy applications.
Solution Approach 2:
The patent implements partial Monte Carlo simulation by focusing computational resources on the most critical aspects of dose calculation rather than simulating all physical processes in full detail. This partial action approach maintains sufficient accuracy for clinical decision-making while significantly reducing calculation time and resource requirements.
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 system significantly reduces calculation time and resource consumption while maintaining accuracy in neutron capture therapy planning, minimizing damage to normal tissues and enhancing treatment efficacy against radio-resistant tumors.
Implementation Method 1
The beam irradiation device generates a treatment beam and irradiates the treatment beam to an irradiated body, to form an irradiated site
Implementation Method 2
screening elements with influence on simulation and calculation results of neutrons and photons in application scenes of the radioactive ray irradiation system by a treatment plan module
Implementation Method 3
screening elements with influence on simulation and calculation results of neutrons and photons
Data Source
AI summary
A radiation irradiation system and a control method therefor. On the basis of weight proportions of elements in a human body and reaction intensities the elements with a neutron and a photon, the element that has influence on simulation calculation results of the neutron and the photon in an application scenario of the radiation irradiation system is screened out, and during a simulation process, only the screened-out element is simulated, so that the calculation speed can be greatly improved, and the calculation time can be reduced.