Alessandro Savoia

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Capacitive micromachined ultrasonic transducers (CMUTs) bring the fabrication technology of standard integrated circuits into the field of ultrasound medical imaging. This unique property, combined with the inherent advantages of CMUTs in terms of increased bandwidth and suitability for new imaging modalities and high frequency applications, have indicated(More)
Most of ultrasound medical imaging systems currently on the market implement standard Delay and Sum (DAS) beamforming to form B-mode images. However, image resolution and contrast achievable with DAS are limited by the aperture size and by the operating frequency. For this reason, different beamformers have been presented in the literature that are mainly(More)
The Delay Multiply and Sum (DMAS) beamforming algorithm was originally conceived for microwave imaging of breast cancer. In a previous work, we demonstrated that, by properly modifying and improving the algorithm processing steps, DMAS can be successfully applied to ultrasound signals for B-mode image formation and that it outperforms standard Delay and Sum(More)
The four-port matrix modeling is here applied to the power transfer mechanism through the different sections of the acoustic fiber motor, in order to evaluate the performances of the design. Analytical results are compared with experimental measurements on a motor prototype (fiber length 115 mm and diameter 0.8 mm, maximum torque 1.4 mNm, maximum speed 3200(More)
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