Pulsed Magnetic Field Generator for Radiation Therapy Electron Control
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Solution Overview
Problem
Existing magnetic field generating units in radiation treatment devices are oversized, leading to increased caloric value, voltage consumption, and external leakage, which complicates accurate radiation treatment by interfering with linear accelerators and electron beams, and causes damage to normal tissues due to excessive radiation exposure.
Innovation Solution
A miniaturized magnetic field generating apparatus that synchronizes radiation pulses with magnetic field pulses, using a synchronization control unit to control the formation of magnetic fields, minimizing heat generation and external leakage, and placing the magnetic field generating unit inside a shield to reduce interference with sensitive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the magnetic field generating unit continuously generates a magnetic field during radiation treatment, then the magnetic field can control secondary electrons to protect normal tissue, 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 pulses with radiation pulses, creating periodic operation that reduces average power consumption while maintaining the electron control function during active treatment phases.
Solution Approach 2:
The system transitions from static continuous magnetic field generation to dynamic pulsed operation. The magnetic field is activated only when needed (synchronized with radiation pulses) and deactivated otherwise, making the operation adaptive and reducing overall energy consumption while maintaining treatment effectiveness.
2Object-affected harmful factors
If the magnetic field generating unit continuously generates a magnetic field, then electron control is maintained, but heat generation increases requiring larger cooling devices
Solution Approach 1:
The magnetic field generating unit operates in periodic pulses synchronized with radiation beam pulses. By activating the magnetic field only during radiation pulse delivery rather than continuously, the duty cycle is reduced, which directly decreases average heat generation and allows for more compact cooling system design.
3Reliability
If the magnetic field generating unit is oversized to suppress heat and supply sufficient voltage, then reliable operation is achieved, but the treatment space is restricted
Solution Approach 1:
By operating the magnetic field generating unit in pulsed mode synchronized with radiation pulses, the peak power requirements are maintained for reliable operation during treatment, while the reduced average power consumption allows for more compact cooling and power supply devices, thereby expanding the available treatment space.
Solution Approach 2:
The system uses dynamic pulsed operation to achieve reliable magnetic field generation during active treatment phases while reducing overall system size requirements. The magnetic field strength is maintained when needed, but the reduced duty cycle allows for smaller cooling and power supply infrastructure.
4Manufacturing precision
If the magnetic field is frequently generated, then electron control is improved, but external leakage magnetic field causes malfunction of radiation treatment device components
Solution Approach 1:
The magnetic field is generated in periodic pulses synchronized with radiation beam pulses rather than frequently or continuously. This timing coordination ensures the magnetic field is present when electron control is needed for accurate beam targeting, while the reduced frequency and strategic timing minimize external leakage effects on sensitive 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 apparatus reduces power consumption, minimizes heat generation, and minimizes damage to normal tissues by optimizing radiation delivery to tumor areas, enhancing treatment effectiveness while reducing the size of cooling and power supply devices.
Implementation Method 1
a magnetic field generating unit, which forms a magnetic field inside the subject
Implementation Method 2
a synchronization control unit that synchronizes a radiation pulse corresponding to the photon beam radiation with a magnetic field pulse corresponding to the magnetic field
Data Source
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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 at least 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 such that the secondary electrons move while avoiding normal tissue adjacent to the affected tissue.