• Title/Summary/Keyword: 투명 초음파 변환기

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Optically transparent ultrasound transducers for combined ultrasound and photoacoustic imaging: A review (초음파-광음향 융합 영상을 위한 투명 초음파 변환기)

  • Shunghun Park;Jin Ho Chang
    • The Journal of the Acoustical Society of Korea
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    • v.42 no.5
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    • pp.441-451
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    • 2023
  • Ultrasound transducers are an essential component of combined photoacoustic and ultrasound imaging systems and play an important role in image evaluation. However, ultrasound transducers are opaque; therefore, light must bypass the ultrasound transducer to reach the target point to produce a photoacoustic image. Providing different paths for the optical and acoustic signals results in a complicated system design, increasing the system volume. To overcome these problems, an optically Transparent Ultrasound Transducer (TUT) was developed. Unlike conventional opaque ultrasound transducers, optically TUT can be fabricated by a variety of manufacturing methods and they are suitable for use with specific piezoelectric elements and serve various purposes. In this study, a comparative analysis of the results of using Lithium Niobate (LNO), Lead Magnesium Niobate-Lead Titanate (PMN-PT), and Polyvinylidene Difluoride (PVDF), which are materials used in piezoelectric element-based TUT. LNO is a piezoelectric element widely used in TUT, and PMN-PT has been actively studied recently with a higher transmission and reception rate than LNO. Existing TUT have lower ultrasound resolution than photoacoustic resolution, but they have recently been manufacturing focused TUT with high ultrasound resolution using PVDF. A comparative analysis of the production results of these TUT was performed.

지혜 깊어지는 건강_건강검진 이야기: 간편한 초음파검사 결과도 바로 확인하다

  • Lee, Eun-Jeong
    • 건강소식
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    • v.35 no.7
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    • pp.16-17
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    • 2011
  • 검사 테이블로 바로 누워 해당 검사 부위에 투명한 젤을 바르고 그 위에 초음파 변환기를 대면 모니터에 실시간 이미지가 떠오르고 이를 관찰하면 된다. 짧게는 10분, 길게는 30분이면 충분하다. 이처럼 초음파검사는 간편할 뿐만 아니라, 별다른 고통 없이 여러 질병을 진단할 수 있다.

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