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Showing 1 to 3 of 3 for “"Pulse inversion"”.
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Contrast-enhanced Doppler Ultrasound Imaging using Plane Waves
… time constraints severely limiting the number of pulses available for Doppler estimates. However, recent breakthroughs in plane-wave synthetic ultrasound considerably increased the maximal imaging frame rate, enabling new imaging trade-off previously unavailable. In this thesis, we first implement …
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Detection and assessment of high temperature hydrogen attack in steel pressure vessels using non-collinear wave mixing
… wave mixing of ultrasonic waves and pulse-inversion is illustrated using a test sample extracted from a retired pressure vessel. Results show that nonlinear ultrasonics are capable of detecting and evaluating HTHA damage over the thickness of the specimen. These results are then …
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Identifying Vulnerable Plaques with Acoustic Radiation Force Impulse Imaging
… the hypothesis that Acoustic Radiation Force Impulse (ARFI) imaging can noninvasively identify lipid regions, that have been shown to increase a plaque's propensity to rupture, within carotid artery plaques <italic>in vivo</italic>. The work detailed herein describes development efforts and …