변환기 직경에 따른 저강도 집속 초음파 조사 시뮬레이션 연구

초록

Low-intensity focused ultrasound technology is a neuromodulation that regulates nerves by stimulating the brain, and provides a higher spatial resolution than electric/magnetic stimulation. This technology mainly uses single-element transducer, and the results may vary. However, in most commercial product, as the results of fixed standards have been reported, the effect of the transducer"s standard was analyzed. In this study, the simulation was conducted by increasing the transducer diameter to 30mm, 50mm and the frequency from 350kHz to 1000kHz. As a result, as the diameter increased, the maximum pressure and focal length increased and the FWHM volume decreased. However, when the diameter is 30mm and the frequency is 750kHz, the opposite result of the previous trend is observed. Accordingly, we aim to propose a personalized transducer by studying the various optimal combination of transducers.

키워드