Statistical modeling of the radio-frequency signal for partially- and fully-developed speckle based on a generalized gaussian model with application to echocardiography
We have shown previously that the statistics of the radio-frequency (RF) signals may be faithfully modeled through the so-called K(RF) distribution, in situations ranging from fully to partially-developed speckle. We demonstrate in this paper that the generalized Gaussian provides a reliable and com...
| Veröffentlicht in: | IEEE transactions on ultrasonics, ferroelectrics, and frequency control. - 1986. - 54(2007), 10 vom: 27. Okt., Seite 2189-94 |
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| Weitere Verfasser: | , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2007
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| Zugriff auf das übergeordnete Werk: | IEEE transactions on ultrasonics, ferroelectrics, and frequency control |
| Schlagworte: | Letter |
| Zusammenfassung: | We have shown previously that the statistics of the radio-frequency (RF) signals may be faithfully modeled through the so-called K(RF) distribution, in situations ranging from fully to partially-developed speckle. We demonstrate in this paper that the generalized Gaussian provides a reliable and computationally convenient approximation of the K(RF). The performance of the parameters estimators for the two distributions is evaluated and compared in terms of their bias and variance through numerical simulations. This framework is applied to the modeling of echocardiographic data. The ability of the generalized Gaussian to model RF signals from cardiac tissues (myocardium) and blood regions is demonstrated on data acquired in vivo |
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| Beschreibung: | Date Completed 13.12.2007 Date Revised 17.09.2019 published: Print Citation Status MEDLINE |
| ISSN: | 1525-8955 |