High Frequency Control Device for Particle Beam Scanning Irradiation
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Solution Overview
Problem
The existing high-frequency control devices for particle beam therapy systems face challenges in efficiently storing and retrieving large amounts of data required for scanning irradiation methods, leading to high memory costs and increased processing times, which hinder the application of scanning irradiation due to the need for fast data loading and error-free pattern changes.
Innovation Solution
A high-frequency control device utilizing a Hard Disk Drive (HDD) memory to store pattern data for combinations of energy and intensity, with a local memory that reads and stores data in a sequential order from the HDD, allowing for faster data retrieval and reduced local memory capacity, enabling efficient scanning irradiation methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a large capacity local memory is used to store pattern data for scanning irradiation, then data retrieval speed is improved, but memory cost increases significantly
Solution Approach 1:
The patent divides the storage system into two segments: HDD memory for bulk pattern data storage and local memory for temporary caching. This segmentation allows the system to leverage the high capacity of HDD and the fast access speed of local memory, resolving the contradiction between storage capacity and access speed while controlling costs.
Solution Approach 2:
The system performs preliminary actions by pre-loading required pattern data from HDD to local memory before actual irradiation treatment. This advance preparation ensures that when treatment begins, the data is already available in fast local memory, maintaining high-speed operation without requiring the entire dataset to reside in local memory simultaneously.
2Reliability
If data is redownloaded or recovered from volatile memory after data loss, then system reliability is restored, but recovery time increases significantly
Solution Approach 1:
The patent implements a backup mechanism where pattern data is stored in both HDD memory (permanent storage) and local memory (fast access). This dual-storage approach provides a safety cushion: if data is lost from local memory due to circuit failure, the system can quickly retrieve it from HDD without requiring complete system reconfiguration or lengthy recovery procedures.
3Manufacturing precision
If pattern data is sent through a host computer for processing, then control accuracy is improved, but processing time increases
Solution Approach 1:
The system performs preliminary processing of pattern data during the treatment planning phase, storing pre-processed and validated data in the control device. This advance preparation eliminates the need for real-time processing during treatment, allowing the host computer to operate at full accuracy while the actual treatment proceeds at high speed using pre-prepared data.
Data Source
AI summary
A hard disk drive memory (31) which stores pattern data of a high-frequency to be applied for each combination of energy and intensity of the generated particle beam and a local memory (32), which reads a plurality of pattern data of a high-frequency for each patient together with a sequential order of changing energy and intensity from the hard disk drive memory (31) and stores data in order to perform a scanning irradiation method in which a layered particle beam irradiation region in a depth direction of an affected part of the patient is formed sequentially by changing energy and intensity of the particle beam sequentially to irradiate an affected part of a patient which is an irradiation subject with the particle beam, and which reads out data faster than the hard disk drive memory are provided.