TY - GEN
T1 - Measurement of ultrasonic attenuation coefficient in time and frequency domain using miniprobe transducer
AU - Soetanto, Kawan
AU - Wang, Shyh Hau
AU - Reid, John M.
N1 - Funding Information:
This work was supported in part by NIH, Grant IpolCA52823-01
Publisher Copyright:
© 1992 IEEE.
PY - 1992
Y1 - 1992
N2 - 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.
AB - 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.
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U2 - 10.1109/IEMBS.1992.5762189
DO - 10.1109/IEMBS.1992.5762189
M3 - Conference contribution
AN - SCOPUS:85067173319
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 2106
EP - 2107
BT - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
A2 - Morucci, Jean Pierre
A2 - Plonsey, Robert
A2 - Coatrieux, Jean Louis
A2 - Laxminarayan, Swamy
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
Y2 - 29 October 1992 through 1 November 1992
ER -