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Assessing Intracardiac Vortices with High Frame-Rate Echocardiography-Derived Blood Speckle Imaging in Newborns
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Assessing Intracardiac Vortices with High Frame-Rate Echocardiography-Derived Blood Speckle Imaging in Newborns

Published on: December 22, 2023

Speckle reduction through interactive evolution of a general order statistics filter for clinical ultrasound imaging

Cristian Munteanu1, Francisco Cabrera Morales, Juan Ruiz-Alzola

  • 1Centre for Technology in Medicine, University of Las Palmas de Gran Canaria, Centro de Tecnologia Medica, Tafira Las Palmas 35017, Spain. cristi@ctm.ulpgc.es

IEEE Transactions on Bio-Medical Engineering
|February 1, 2008
PubMed

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Upsampling01:22

Upsampling

Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...