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- W2102323370 abstract "A reliable tool for noninvasive blood pressure measurement is of interest since it will provide painless and infectionless measurements of ambient pressure changes within the body. We suggest to use clinically available ultrasound contrast agents (UCA) as a blood pressure sensor. The current investigation focused on the effects of hydrostatic pressures on the harmonic and sub-harmonic response of a clinically available UCA, Optison™. Samples of UCA suspension in saline, at commonly used in-vivo concentration of 50000 microspheres/cm^3, were subjected to hydrostatic pressure variations between 0 and 20 kPa (mimicking in-vivo pressures) and to insonations at 4MHz, 150-250 kPa, 9 cycles, PRF of 8 Hz bursts. The total duration of each experiment was 300s. The sub-harmonic-to-basic-frequency (SHBF) intensity ratio of the harmonic microbubble response was found to be the most accurate and robust measure of ambient pressure variations." @default.
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- W2102323370 date "2006-03-10" @default.
- W2102323370 modified "2023-09-25" @default.
- W2102323370 title "Estimation of ambient pressure changes using nonlinear acoustic properties of ultrasound contrast agents" @default.
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- W2102323370 doi "https://doi.org/10.1109/ultsym.2005.1602985" @default.
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