Multi-Channel Neutron Dose Detection for Accurate BNCT Irradiation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing neutron capture therapy systems face challenges in accurately setting and detecting neutron irradiation dosages, leading to potential errors and increased medical risks due to operator mistakes during treatment planning and execution.
Innovation Solution
A neutron dosage detection apparatus with multiple counting rate channels of varying sensitivities, coupled with a conversion and integration unit, to accurately measure neutron flux and dosage, and a monitoring system to adjust and display real-time parameters, reducing errors and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single detector with fixed sensitivity is used for neutron dosage detection, then the device structure is simple, but the measurement precision varies across different neutron flux levels
Solution Approach 1:
The detection system is segmented into multiple independent counting rate channels, each with detectors of different sensitivities. This allows the system to divide the detection task across multiple specialized sub-systems, where each channel optimally detects specific neutron flux ranges, thereby improving overall measurement precision across varying conditions.
Solution Approach 2:
The system dynamically selects and switches between different counting rate channels based on the current neutron flux level. The counting rate channel selection unit automatically determines which channel to use, enabling the detector system to adapt its sensitivity to match the prevailing radiation conditions, thus maintaining high measurement precision across a wide range of flux levels.
2Ease of operation
If manual control of irradiation parameters is allowed during treatment, then the system is easy to operate, but the reliability decreases due to potential operator mistakes
Solution Approach 1:
The system incorporates real-time feedback mechanisms where the actual irradiation parameters are continuously monitored and compared against the treatment plan. The control unit receives feedback from the detection system and automatically adjusts or prevents parameter changes that would deviate from the prescribed dosage, thereby maintaining reliability while allowing necessary operational flexibility.
Solution Approach 2:
The system implements preliminary protective measures by pre-configuring the treatment plan with authorized parameter ranges and requiring confirmation for any changes. The control unit is designed to prevent accidental or unauthorized parameter modifications before they can affect the irradiation process, thus counteracting potential operator errors in advance.
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 provides precise neutron dosage detection and real-time adjustment, minimizing radiation exposure to normal tissues and improving treatment accuracy by reducing errors and operator-induced risks.
Implementation Method 1
The counting rate channels includes at least a first counting rate channel including a first detector and a second counting rate channel including a second detector, and sensitivity of the first detector is different from sensitivity of the second detector.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention provides a neutron dose detection apparatus and a neutron capture therapy device. The neutron dose detection apparatus comprises at least two counting rate channels and a counting rate channel selection unit used for selecting one of the at least one counting rate channels. The counting rate channel comprises a detector used for detecting neutrons and outputting a signal, a signal processing unit used for processing the signal output by the detector, and a counter used for counting the signal output by the signal processing unit.