Nivaldo Theodoro Schiefler Jr.

Dr. Nivaldo Theodoro Schiefler Jr.

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Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 October 2018 in Sensors
Verified
Journal Article
Open access
PDF file
NJNivaldo Theodoro Schiefler Jr.
Nivaldo Theodoro Schiefler Jr.
JMJoaquim Miguel Maia
Joaquim Miguel Maia
FFábio Schneider
Fábio Schneider
AZAcácio José Zimbico
Acácio José Zimbico
Amauri Amorin AssefAmauri Amorin Assef
Amauri Amorin Assef
ECEduardo T. Costa
Eduardo T. Costa
Ultrasonic imaging is one of the most important techniques to help medical diagnosis. However, obtaining high quality images requires the acquisition, processing, and storage of a large amount of data. In this work, we evaluated a new ultrasound imaging technique based on plane wave and sparse arrays to increase the scan rate and reduce the amount of data amount to be stored. The performance of the proposed method was tested using simulated echo data (from Field II) and phantom data acquired using a Verasonics system equipped with a L11-4v linear array transducer. The tests were done using 128 elements for transmission and 128, 65, 44, and 23 elements sparsely distributed for reception. The simulated data were compared with images obtained with the Delay and Sum (DAS) method and the experimental data were compared with those acquired from Verasonics. The obtained results using the Full Width at Half Maximum (FWHM) criteria at −6 dB showed that the images generated by the proposed method were similar in terms of resolutions (axial and lateral) and contrast to the simulated and the Verasonics commercial ones, indicating that the sparse reception proposed method is suitable for ultrasound imaging.