2007
DOI: 10.1109/tuffc.2007.243
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Detection of tissue harmonic motion induced by ultrasonic radiation force using pulse-echo ultrasound and kalman filter

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Cited by 97 publications
(77 citation statements)
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“…As the vibration frequency must be known to run the Kalman filter (Zheng et al, 2007), it was necessary to span the frequency values (from 10 to 750 Hz, in steps of 1 Hz) used in the filter to find out the estimated frequency based on the maximum filter output vibration amplitude. The estimated frequency was compared with the one from the function generator used to feed the loudspeaker.…”
Section: Resultsmentioning
confidence: 99%
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“…As the vibration frequency must be known to run the Kalman filter (Zheng et al, 2007), it was necessary to span the frequency values (from 10 to 750 Hz, in steps of 1 Hz) used in the filter to find out the estimated frequency based on the maximum filter output vibration amplitude. The estimated frequency was compared with the one from the function generator used to feed the loudspeaker.…”
Section: Resultsmentioning
confidence: 99%
“…Considerando que o sistema de ultrassom empregado para detectar a vibração do meio funciona da forma pulso-eco, emitindo uma salva de senoides com frequência w 0 e período de repetição de pulsos (PRP) T, o n-ésimo sinal de eco ultrassônico captado pelo transdutor é representado por (Zheng et al, 2007):…”
Section: Materiais E Métodosunclassified
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“…Generally, the Voigt model is a classic rheological model used in ultrasound methods (Zheng et al, 2007;Chen S. et al, 2009;Chen X. et al, 2013), but its application was not extensively compared with other models for liver study (Chen et al, 2004;2009;Catheline et al, 2004;Gennisson et al, 2010;Orescanin and Insana, 2010;Mitri et al, 2011). Our next work will assess the feasibility of the Zener model in the estimation of viscoelastic parameters for liver fibrosis staging in ultrasonic elastography methods.…”
Section: Discussionmentioning
confidence: 99%