Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Validation of Acoustic Equivalence of Transparent and Opaque Ultrasound Transducers: A Quantitative Analysis Study

투명 및 불투명 초음파 트랜스듀서의 음향학적 동등성 검증: 정량적 분석 연구

  • Dasom Heo (Department of Mechanical Engineering, Electrical Engineering, Convergence IT Engineering, and Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH)) ;
  • Jaewoo Kim (Department of Mechanical Engineering, Electrical Engineering, Convergence IT Engineering, and Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH)) ;
  • Seonghee Cho (Department of Mechanical Engineering, Electrical Engineering, Convergence IT Engineering, and Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH)) ;
  • Hyung Ham Kim (Department of Mechanical Engineering, Electrical Engineering, Convergence IT Engineering, and Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH)) ;
  • Chulhong Kim (Department of Mechanical Engineering, Electrical Engineering, Convergence IT Engineering, and Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH))
  • 허다솜 (포항공과대학교 기계공학과, 전자전기공학과, IT 융합공학과, 의료기기 혁신센터) ;
  • 김재우 (포항공과대학교 기계공학과, 전자전기공학과, IT 융합공학과, 의료기기 혁신센터) ;
  • 조성희 (포항공과대학교 기계공학과, 전자전기공학과, IT 융합공학과, 의료기기 혁신센터) ;
  • 김형함 (포항공과대학교 기계공학과, 전자전기공학과, IT 융합공학과, 의료기기 혁신센터) ;
  • 김철홍 (포항공과대학교 기계공학과, 전자전기공학과, IT 융합공학과, 의료기기 혁신센터)
  • Received : 2024.11.13
  • Accepted : 2024.12.07
  • Published : 2024.12.31
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Abstract

Ultrasound technology is being integrated with optical systems in biomedical, industrial, and scientific applications. The development of transparent ultrasound transducers enables successful integration by allowing precise alignment between optical and acoustic paths. However, acoustic characterization of transparent ultrasound transducers has mainly focused on basic imaging parameters, while comprehensive evaluation of acoustic output and safety validation remains limited. This study aims to provide comprehensive acoustic characterization and safety validation of transparent ultrasound transducer (TT) through systematic comparison with opaque ultrasound transducer (OT). In this study, TT and OT were fabricated with the same structural design and systematically evaluated by measuring acoustic, electrical, and safety parameters. Both exhibited similar performance with center frequencies (18-19 MHz), bandwidths (44-54%), electrical impedances (59 Ω and 30 Ω), and similar beam diameter (0.75-0.83 mm). The acoustic output parameters of TT (1.14 MPa, 4.29 mW/cm2) were comparable to OT (1.12 MPa, 4.42 mW/cm2), with mechanical (0.26) and thermal indices (<0.01) within safety guidelines. A systematic comparative analysis between TT and OT, focusing on acoustic characteristics and safety parameters, provides essential reference data. This comprehensive evaluation enables more informed decisions in selecting and implementing TTs in optical-ultrasound integrated systems.

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Acknowledgement

이 연구는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구(2022R1A2B5B0200219313, 2023R1A2C3004880, 2710006567), 교육부의 재원으로 한국연구재단 기초과학연구사업의 지원을 받아 수행된 연구(2020R1A6A1A03047902), 정부(과학기술정보통신부, 산업통상자원부, 보건복지부, 식품의약품안전처)의 재원으로 범부처전주기의료기기연구개발사업단의 지원을 받아 수행된 연구(과제고유번호: 1711195277, RS-2020-KD000008), 정부(산업통상자원부) 연구비 지원에 의한 연구(20024916)이며 BK21 FOUR 프로그램 및 Glocal University 30 Projects의 지원으로 수행되었습니다.