Pulsed Magnetic Field Generator for Radiation Therapy
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Solution Overview
Problem
Existing magnetic field generating apparatuses for radiation treatment devices are oversized, leading to increased caloric value, voltage consumption, and external leakage of magnetic fields, which restrict treatment space and interfere with accurate radiation treatment.
Innovation Solution
A miniaturized magnetic field generating apparatus is developed, where the magnetic field generating unit is placed inside a magnetic field shield unit, and a synchronization control unit synchronizes the radiation pulse with the magnetic field pulse to reduce the duty factor of the magnetic field generating unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic field generating unit continuously generates a magnetic field during radiation treatment, then the magnetic field can effectively control secondary electrons, but the operating time increases leading to increased caloric value and voltage consumption
Solution Approach 1:
The magnetic field generating unit operates in periodic pulses synchronized with the radiation beam pulses rather than continuously. The synchronization control unit coordinates the magnetic field generation timing with radiation pulse timing, creating periodic operation cycles that reduce overall operating time while maintaining effectiveness during active treatment phases.
Solution Approach 2:
The system dynamically adjusts the magnetic field generation based on real-time treatment conditions. The synchronization control unit modulates the magnetic field timing and duration to match the radiation delivery pattern, transitioning from static continuous operation to dynamic pulsed operation that adapts to treatment requirements.
2Reliability
If the magnetic field generating unit operates continuously, then sufficient magnetic field is provided for electron control, but the cooling device and power supply device must be manufactured large to suppress heat and supply sufficient voltage
Solution Approach 1:
By operating the magnetic field generating unit in synchronized pulses rather than continuously, the duty cycle is reduced. This periodic operation allows the cooling and power supply devices to be smaller because they only need to handle thermal and power loads during active pulse periods rather than maintaining continuous capacity.
Solution Approach 2:
The synchronization control unit coordinates the magnetic field generation with radiation pulses to create self-regulating operation patterns. The system naturally limits its own thermal and power requirements through pulse synchronization, reducing the burden on external cooling and power supply infrastructure.
3Volume of stationary object
If the magnetic field generating unit is miniaturized, then treatment space is expanded, but the duty factor must be reduced to lower caloric value and voltage consumption
Solution Approach 1:
The miniaturized magnetic field generating unit operates with reduced duty factor through pulse synchronization with radiation beams. This periodic operation pattern allows the compact unit to achieve effective treatment results while maintaining lower average power consumption and heat generation consistent with its reduced size.
Solution Approach 2:
The system changes operational parameters including duty factor, pulse width, and synchronization timing to optimize performance of the miniaturized magnetic field generating unit. These parameter adjustments enable the compact design to deliver adequate magnetic field exposure during treatment while maintaining acceptable thermal and power characteristics.
4Reliability
If the magnetic field is frequently generated, then secondary electron control is improved, but external leakage magnetic field causes malfunction of radiation treatment device and interferes with accurate beam targeting
Solution Approach 1:
The magnetic field is generated in periodic pulses synchronized with radiation beam delivery rather than frequently or continuously. This timing coordination ensures magnetic field presence only when radiation is actively delivered, improving secondary electron control during treatment while minimizing external leakage effects on other device components.
Solution Approach 2:
The synchronization control unit acts as an intermediary that coordinates between radiation beam delivery and magnetic field generation. This mediator ensures magnetic field pulses are timed precisely with radiation pulses, achieving effective electron control during treatment while preventing magnetic field interference with other radiation treatment device components.
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 solution effectively suppresses the influence of the magnetic field on linear accelerators and electron guns, reduces the duty factor and caloric value of the magnetic field generating unit, and minimizes external magnetic field leakage, leading to a more compact and efficient radiation treatment device.
Implementation Method 1
a magnetic field generating unit... which forms a magnetic field in an area in which the secondary electrons are generated
Implementation Method 2
the magnetic field generating unit is placed inside a magnetic field shield unit, and a synchronization control unit synchronizes the radiation pulse with the magnetic field pulse
Data Source
AI summary
Disclosed is a radiation and magnetic field generating apparatus irradiating photon beam radiation to in-body affected tissue of a subject including a radiation generating unit that irradiates the photon beam radiation to the subject and induces generation of secondary electrons in an area of the subject where the photon beam radiation is irradiated, a magnetic field generating unit, which is provided to be inserted into a body, which includes an insertion structure for forming a low-density space, and which forms a magnetic field in an area in which the secondary electrons are generated, and a synchronization control unit that controls formation of the magnetic field such that a part of the secondary electrons moves to the low-density space based on a relationship between an area where the photon beam radiation is irradiated and a location of an affected part, and controls the formation of the magnetic field.