Investigation of cylindrical piezoelectric and specific multi-channel circular mems-transducer array resonator of ultrasonic ablation

Research output: Contribution to journalArticlepeer-review

Abstract

Background: A cylindrical piezoelectric element and a specific multi-channel circular mi-croelectromechanical systems (MEMS)-transducer array of ultrasonic system were used for ultrasonic energy generation and ablation. A relatively long time is required for the heat to be conducted to the target position. Ultrasound thermal therapy has great potential for treating deep hyperplastic tissues and tumors, such as breast cancer and liver tumors. Methods: Ultrasound ablation technology produces thermal energy by heating the surface of a target, and the heat gradually penetrates to the target’s interior. Beamforming was performed to observe energy distribution. A resonance method was used to generate ablation energy for verification. Energy was generated according to the coordi-nates of geometric graph positions to reach the ablation temperature. Results: The mean resonance frequency of Channels 1–8 was 2.5 MHz, and the cylindrical piezoelectric ultrasonic element of Channel A was 4.2546 Ω at 5.7946 MHz. High-intensity ultrasound has gradually been applied in clinical treatment. Widely adopted, ultrasonic hyperthermia involves the use of high-intensity ultrasound to heat tissues at 42–45C for 30–60 min. Conclusion: In the ultrasonic energy method, when the target position reaches a temperature that significantly reduces the cell viability (46.9C), protein surface modification occurs on the surface of the target.

Original languageEnglish
Article number371
JournalMicromachines
Volume12
Issue number4
DOIs
Publication statusPublished - Apr 2021

Keywords

  • Ablation
  • Resonance
  • Ultrasound MEMS-transducer

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Investigation of cylindrical piezoelectric and specific multi-channel circular mems-transducer array resonator of ultrasonic ablation'. Together they form a unique fingerprint.

Cite this