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Vibro-acoustography is an elasticity imaging method that uses two ultrasound beams of slightly different frequency to excite an object and detects the resulting acoustic emission (AE) at the difference frequency. This method is especially sensitive to bubbles due to their nonlinearity. This study explores the harmonic acoustic emission (HAE) at twice the difference frequency emitted from bubbles....
In this paper, the multiple scattering of interacting encapsulated microbubbles in suspensions is calculated using two novel approaches – Kargl’s effective medium approach and Ye and Ding’s approach of 2nd-order correction. Two types of contrast agents with bubbles of different sizes and concentrations are chosen for our numerical simulations. One is Albunex ® , which is depicted by Church...
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