Work

Liposuction with real-time monitoring using Langevin transducer and imaging array

Year: 2024

Type: article

Abstract: We constructed a liposuction therapeutic system using a Langevin transducer operating at 38 kHz, paired with an 8.2 MHz imaging array. This system generated high-power ultrasonic energy, which was applied to chicken breast tissue to validate its therapeutic potential. Simultaneously, the acoustic cavitation phenomena induced by the high-power ultrasound were recorded by an 8.2 MHz high-frequency imaging transducer and a hydrophone. With a voltage peak-to-peak (V PP ) amplitude of 150 V, the Langevin transducer emitted a peak-to-peak pressure of 31.56 kPa. This resulted in a broadband noise up to 200 kHz, indicative of transient cavitation. The imaging array visualized hyperechoic images resulting from cavitation, and the luminance of these images was evaluated as a function of electrical voltage. A comparative analysis between 50 V and 100 V indicated luminance values of 146 and 178, respectively, suggesting that higher electrical amplitudes correlate with increased bubble activity, leading to a wider noise band and brighter images. Additionally, the temperature rise induced by the Langevin transducer was investigated using a thermocouple , revealing that mechanical and thermal effects could occur simultaneously. A liposuction system with real-time cavitation monitoring will improve its efficacy through guided treatment.

Source: Sensors and Actuators A Physical

DOI: 10.1016/j.sna.2024.116063

Authors: Jinhyuk Kim, Yeonggeun Kim, Hyung Ham Kim, Jungwoo Lee

Institutions: Pohang University of Science and Technology, Kwangwoon University

Language: English

Topic: Ultrasound and Hyperthermia Applications

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,540

Funders: Korea Medical Device Development Fund, Kwangwoon University, Ministry of Education, Ministry of Science and ICT, South Korea