대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제12권4호
  • /
  • Pages.249-254
  • /
  • 1991
  • /
  • 1229-0807(pISSN)
  • /
  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
권호 표지

감쇠 계수 추출을 위한 초음파 신호 분석 연구 - Homomorphic Process와 수정된 spectral difference방법을 사용하여 얻은 실리콘 팬텀의 감쇠 계수 안정성에 관한 연구 -

The Study on the Ultrasound Signal Processing for Estimating the Attenuation Coefficient - The study on the stability of the attenuation coefficient in silicon-made phantom using both homomorphic process and the modified spectral difference method -

  • 송인찬 (서울대학교 의과대학부설 의공학연구소) ;
  • 민병구 (서울대학교 의과대학부설 의공학연구소)
  • 발행 : 1991.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In the study on the quantitative diagnosis using ultrasound, the stability and precision of tissue characterized parameters are important for the clinical application. We estimate attenuation coefficient introducing homomorphlc process Into the modified spectral differnce method about silicon-madu phantom. We compare the results with those estimated uslng the method used for obtaining the attenuation map image before. Homomorphic process has the effect smoothing the reflected echo signal spectrum, therefore eliminat os the random pattern of the signal spectrum generated by the scatterers. As a result, it Is shown that the stability is enhanced

키워드

참고문헌

  1. IEEE Transactions on Biomedical Engineering v.36 no.2 Local Tissue Attenuation Images Based on Pulsed Echo Ultrasound Scans Eugene Walach(et al.)
  2. J.Acoust.Soc.Am. v.80 no.6 Quantitative grain size evaluation using ultrasound backscattered echoes Jafar Saniie;Nihat M.Bilgutay
  3. Proceedings of the IEEE v.65 no.10 The cepstrum : a guide to processing Donald G. Childers(et al.)
  4. IEEE Transactions on Ultasonics, Ferroelectrics, and Frequency control. v.36 no.3 Analysis of Homomorphic Processing for Ultrasonic Grain Signal Characterization Jafer Saniie;Tao Wang;Nihat M. Bilgutay
  5. 의공학회지 v.11 no.2 간조직 감쇠계수의 초음파 영상 송인찬;민병구
  6. Phys. Med. Biol. v.36 no.8 UItrasound attenuation and texture analysis of diffuse liver disease : methods and preliminary results B.J.Oosterveld(et al.)
  7. IEEE transactions on Uktasonics, Ferroelectrics, and Frequency Control v.35 no.6 Tissue characterization based on scatterer number density estimation Gerard E. Sceefe(et al.)
  8. Proceedings of the IEEE v.73 no.7 Bounds on estimation the acounstic attenuation of small tissue regions from reflected ultrasound Roman Kuc
  9. J. Acoust. Soc. Am. v.82 no.4 Frequencydependence ultrasonic differentiation of nomal and diffusely diseased liver T.Lin;J.Opjir;G.Potter