Measurement of ultrasonic attenuation coefficient in time and frequency domain using miniprobe transducer

Kawan Soetanto, Shyh Hau Wang, John M. Reid

研究成果: Conference contribution

摘要

A miniprobe has been applied to measure the ultrasonic attenuation coefficient for tissue mimicking phantoms, and freshly excised beef tissues. Some measuring errors by conventional probes might be minimized from adopting the miniprobe design. The miniprobe has the small transducer area as well as the function to measure the propagation path distance. Two methods to estimate the attenuation coefficient both from the time waveform and frequency spectra are discussed for our application in transmission mode. The methods and precision of the measurements were verified by eight tissue-mimicking phantoms before the approach to several beef tissues. The range of the errors of the measurement of the whole phantoms were within 0.77% to 1.71% calculated by power spectrum, and within 0.33% to 1.83% calculated by time domain. The results of measurement in phantoms confirm the successive measurement in tissues. According to the result of the attenuation coefficient estimated from phantoms and tissues, the estimation from the power spectrum is larger than that from the time waveform. The results of the errors indicate that directly measuring the heterogeneous materials in the time domain will cause more errors.

原文English
主出版物標題Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
編輯Jean Pierre Morucci, Robert Plonsey, Jean Louis Coatrieux, Swamy Laxminarayan
發行者Institute of Electrical and Electronics Engineers Inc.
頁面2106-2107
頁數2
ISBN(電子)0780307852
DOIs
出版狀態Published - 1992
事件14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992 - Paris, France
持續時間: 1992 10月 291992 11月 1

出版系列

名字Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
5
ISSN(列印)1557-170X

Conference

Conference14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
國家/地區France
城市Paris
期間92-10-2992-11-01

All Science Journal Classification (ASJC) codes

  • 訊號處理
  • 生物醫學工程
  • 電腦視覺和模式識別
  • 健康資訊學

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