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Dr. Eduardo Jorge Valadares Oliveira
at Univ Estadual de Campinas
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Author
Publications (4)
Proceedings Article | 23 May 2003 Paper
Apodization process of piezoelectric ceramics for ultrasound transducers
Mauricio Duarte, Vera Nantes Button, Joaquim Maia, Eduardo Costa, Eduardo Oliveira
Proceedings Volume 5035, (2003) https://doi.org/10.1117/12.479921
KEYWORDS: Ceramics, Apodization, Transducers, Ultrasonography, Electrodes, Acoustics, Spherical lenses, Diffraction, Minerals, Oscilloscopes
Proceedings Article | 23 May 2003 Paper
Phase diversity for speckle reduction
Proceedings Volume 5035, (2003) https://doi.org/10.1117/12.479904
KEYWORDS: Speckle, Spiral phase plates, Ultrasonography, Image filtering, Image resolution, Signal to noise ratio, Image processing, Bandpass filters, Filtering (signal processing), Optical inspection
Proceedings Article | 23 May 2003 Paper
Improved technique for Doppler angle correction by monitoring the vessel diameter
Eduardo Oliveira, Vera Nantes Button, Joaquim Maia, Eduardo Costa, Jorge Albuquerque
Proceedings Volume 5035, (2003) https://doi.org/10.1117/12.479895
KEYWORDS: Transducers, Doppler effect, Blood circulation, Ultrasonics, Ultrasonography, Silicon, Velocity measurements, Blood vessels, Biomedical engineering, Signal processing
Proceedings Article | 23 May 2003 Paper
Influence of backing and matching layers in ultrasound transducer performance
Valeria do Nascimento, Vera Nantes Button, Joaquim Maia, Eduardo Costa, Eduardo Oliveira
Proceedings Volume 5035, (2003) https://doi.org/10.1117/12.479924
KEYWORDS: Transducers, Epoxies, Ultrasonography, Tungsten, Ceramics, Distance measurement, Acoustics, Ferroelectric polymers, Inductance, Transmitters
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