研究目的
Investigating the design and effectiveness of an auto-tuning network for a phased-array high intensity focused ultrasound (HIFU) system to compensate for reactive power and impedance drifts caused by temperature fluctuations and manufacturing errors.
研究成果
The proposed auto-tuning network effectively compensates for reactive power and impedance drifts in phased-array HIFU systems, offering significant improvements in stability and safety for non-invasive cancer treatments. Future work will focus on circuit miniaturization and intelligence for broader clinical applications.
研究不足
The study does not address the potential need for redesigning the circuit to minimize surface area and power consumption for clinical applications.
1：Experimental Design and Method Selection:
The study proposes an auto-tuning network based on a variable synchronous switched capacitor for a phased-array HIFU system.
2：Sample Selection and Data Sources:
The system is tested under conditions simulating temperature fluctuations and manufacturing errors.
3：List of Experimental Equipment and Materials:
A phased-array HIFU system, variable synchronous switched capacitor, and static L-type tuning network are used.
4：Experimental Procedures and Operational Workflow:
The auto-tuning circuit combined with the transducer is treated as a variable LC resonant circuit, with the switching signal for the switched capacitor obtained by detecting the phase difference between input and output signals.
5：Data Analysis Methods:
The effectiveness of the auto-tuning network is evaluated based on its ability to compensate for impedance drifts and comply with MRI compatibility regulations.
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