Optimization of Speed-of-Sound Estimation from Noisy Ultrasonic Signals

J. Ophir; Y. Yazdi; T. S. Lin; David P. Sl

doi:10.1109/58.16964

Optimization of Speed-of-Sound Estimation from Noisy Ultrasonic Signals

J. Ophir, Y. Yazdi, T. S. Lin, David P. Sl

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The effects of prefiltering and the choice of time delay es- timators and statistical data reduction techniques on the precision of speed-of-sound estimation were investigated using the beam-tracking technique. It was found that prefiltering the data with an ideal 50-kHz low-pass filter improved the precision of the estimation in all cases. Echo cross-correlation had an advantage over peak detection for low signal-to-noise ratio (SNR) levels, but its advantage diminished as the signal-to-noise level improved due to filtering. The linear regression method was superior to the paired-point analysis technique under all conditions. Using the optimal set of parameters, precision on the order of 0.1 percent was achieved in a tissue-mimicking phantom when one beam was tracked along 75 mm in 1-mm increments.

Original language	English (US)
Pages (from-to)	16-24
Number of pages	9
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume	36
Issue number	1
DOIs	https://doi.org/10.1109/58.16964
State	Published - Jan 1989
Externally published	Yes

ASJC Scopus subject areas

Instrumentation
Acoustics and Ultrasonics
Electrical and Electronic Engineering

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title = "Optimization of Speed-of-Sound Estimation from Noisy Ultrasonic Signals",

abstract = "The effects of prefiltering and the choice of time delay es- timators and statistical data reduction techniques on the precision of speed-of-sound estimation were investigated using the beam-tracking technique. It was found that prefiltering the data with an ideal 50-kHz low-pass filter improved the precision of the estimation in all cases. Echo cross-correlation had an advantage over peak detection for low signal-to-noise ratio (SNR) levels, but its advantage diminished as the signal-to-noise level improved due to filtering. The linear regression method was superior to the paired-point analysis technique under all conditions. Using the optimal set of parameters, precision on the order of 0.1 percent was achieved in a tissue-mimicking phantom when one beam was tracked along 75 mm in 1-mm increments.",

author = "J. Ophir and Y. Yazdi and Lin, {T. S.} and Sl, {David P.}",

note = "Funding Information: We investigated the effects of prefiltering, choice of time delay estimator and statistical data reduction technique on precision of speed of sound estimation using the beam-tracking technique. It was found that prefiltering the data with an ideal 50 kHz lowpass filter improved the precision of the estimation in all cases. Echo crosscorrelation an advantage over peak detection for low signal-to-noise ratio levels, its advantage diminished as the signal-to-noise level improved due to The linear regression method was superior to the paired-point technique under all conditions. Using optimal set of precision on the order of 0.1% was achieved in a tissue mimicking when one beam was tracked along 75 mm in 1 increments. Supported by National Cancer Institute grants CA44389.",

year = "1989",

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doi = "10.1109/58.16964",

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Optimization of Speed-of-Sound Estimation from Noisy Ultrasonic Signals

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