Prof. Joaquim Miguel Maia Profile

Prof. Joaquim Miguel Maia

Biomedical Engineer at Univ Tecnológica Federal do Paraná

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Publications (14)

Proceedings Article | 6 March 2023 Paper

Qualitative and quantitative comparison of simulated ultrasound images generated by delay-and-sum and minimum variance techniques

Michel Andrey Freitas Kohler, Larissa Comar Neves, Acácio José Zimbico, Joaquim Miguel Maia, Amauri Amorin Assef, Eduardo Tavares Costa

Proceedings Volume 12567, 125670Y (2023) https://doi.org/10.1117/12.2669929

KEYWORDS: Ultrasonography, Spatial filtering, Ultrasound transducers, Phased arrays, Image quality, Image resolution, Optical simulations, Acoustics, Signal processing

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Proceedings Article | 10 December 2021 Paper

Modelling and implementation of an ultrasound beamformer system based on DSP builder

Jonathan de Oliveira, Amauri Amorin Assef, Matheus Jose da Silva Ruzyk, Joaquim Miguel Maia, Mauren Abreu de Souza

Proceedings Volume 12088, 120881I (2021) https://doi.org/10.1117/12.2606002

KEYWORDS: Digital signal processing, Field programmable gate arrays, Data modeling, Apodization, Phased arrays, Signal processing, Model-based design, Ultrasonography, Data conversion, Finite impulse response filters

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Proceedings Article | 10 December 2021 Paper

Modelling and simulation of an ultrasound reception beamforming using Xilinx model composer

Matheus Jose da Silva Ruzyk, Amauri Amorin Assef, Joaquim Miguel Maia, Jonathan de Oliveira, Mauren de Souza, Eduardo Tavares Costa

Proceedings Volume 12088, 120881J (2021) https://doi.org/10.1117/12.2606292

KEYWORDS: Systems modeling, MATLAB, Image processing, Field programmable gate arrays, Ultrasonography, Signal processing, Finite impulse response filters, Simulink, Filtering (signal processing)

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Proceedings Article | 13 March 2017 Paper

Correlation of BAT activity with thyroid metabolic activity in patients with fibromyalgia

A. P. Costa, J. Maia, M. Brioschi, J. E. M. M. Machado

Proceedings Volume 10137, 1013720 (2017) https://doi.org/10.1117/12.2254192

KEYWORDS: Thermography, Body temperature, Forward looking infrared, Infrared cameras, Image processing, Acquisition tracking and pointing, Temperature metrology, Analytical research, Proteins

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Proceedings Article | 1 April 2015 Paper

Monitoring the integrity of massive aluminum structures using PZT transducers and the technique of impedance

Rosalba da Costa, Joaquim Maia, Amauri Assef, Sergio Pichorim, Eduardo Costa, Vera L. S. N. Button

Proceedings Volume 9437, 943728 (2015) https://doi.org/10.1117/12.2084397

KEYWORDS: Ferroelectric materials, Transducers, Aluminum, Ceramics, Ultrasonography, Electromagnetic coupling, Ultrasonics, Nondestructive evaluation, Manufacturing, Piezoelectric effects

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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

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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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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

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Proceedings Article | 11 April 2002 Paper

Improved technique for blood flow velocity measurement using Doppler effect

Eduardo Valadares Oliveira, Vera Nantes Button, Joaquim Maia, Eduardo Costa

Proceedings Volume 4687, (2002) https://doi.org/10.1117/12.462174

KEYWORDS: Transducers, Doppler effect, Blood circulation, Ultrasonics, Ultrasonography, Blood vessels, Velocity measurements, Biomedical engineering, Oscilloscopes, Signal processing

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Proceedings Article | 30 May 2001 Paper

Measurement of transducer directivity function

Sidney Leeman, Andrew Healey, Eduardo Costa, Hayram Nicacio, Ricardo Dantas, Joaquim Maia

Proceedings Volume 4325, (2001) https://doi.org/10.1117/12.428234

KEYWORDS: Transducers, Fourier transforms, Ultrasonography, Distance measurement, Spherical lenses, 3D metrology, Time metrology, Head, Medicine, Calibration

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Proceedings Article | 20 April 2000 Paper

Ultrasonic Doppler blood flow meter for extracorporeal circulation

Ricardo Dantas, Eduardo Costa, Joaquim Maia, Vera Nantes Button

Proceedings Volume 3978, (2000) https://doi.org/10.1117/12.383426

KEYWORDS: Ultrasonics, Blood, Doppler effect, Transducers, Blood circulation, Sensors, Receivers, Signal processing, Heart, Fourier transforms

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Proceedings Article | 12 April 2000 Paper

Evaluation of osteoporosis using ultrasound

Joaquim Maia, Eduardo Costa, Vera Nantes Button, Ricardo Dantas

Proceedings Volume 3982, (2000) https://doi.org/10.1117/12.382253

KEYWORDS: Ultrasonography, Transducers, Signal attenuation, Bone, Ultrasonics, Wave propagation, Transmitters, Dual energy x-ray absorptiometry, Minerals, Control systems

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Proceedings Article | 12 April 2000 Paper

Diffractive limited acoustic field of an apodized ultrasound transducer

Vera Nantes Button, Eduardo Costa, Joaquim Maia, Ricardo Dantas

Proceedings Volume 3982, (2000) https://doi.org/10.1117/12.382252

KEYWORDS: Transducers, Ceramics, Acoustics, Ultrasonography, Electrodes, Apodization, Diffraction, Spherical lenses, Polarization, Finite element methods

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Proceedings Article | 21 June 1999 Paper

Apodization of piezoelectric ceramics for ultrasound transducers

Vera Nantes Button, Eduardo Costa, Joaquim Maia

Proceedings Volume 3664, (1999) https://doi.org/10.1117/12.350665

KEYWORDS: Transducers, Ceramics, Acoustics, Electrodes, Ultrasonography, Apodization, Spherical lenses, Diffraction, Finite element methods, Near field

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Showing 5 of 14 publications

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