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Akademický článek
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Autor:
Mark R. Holland, Matthew Rielly, James G. Miller, R.J. Fedewa, James Jago, G.C. Ng, Kirk D. Wallace, Brent S. Robinson
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 51:576-588
To be successful, correlation-based, phase-aberration correction requires a high correlation among backscattered signals. For harmonic imaging, the spatial coherence of backscatter for the second harmonic component is different than the spatial coher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa48a74b36bd32ed66a730bf4b7caef8
https://doi.org/10.1109/tuffc.2004.1320830
https://doi.org/10.1109/tuffc.2004.1320830
Autor:
R.J. Fedewa, K.D. Wallace, M.R. Holland, J.R. Jago, G.C. Ng, M.R. Rielly, B.S. Robinson, J.G. Miller
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 51:576-588
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68755c1d2a22ae148c1ead01473906d9
https://doi.org/10.1109/tuffc.2004.1302766
https://doi.org/10.1109/tuffc.2004.1302766
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 41:631-643
A common framework is presented to classify several phase correction techniques. A subset of these techniques are evaluated through simulations which utilize 2-D phase aberration profiles measured in the breast. The techniques are compared based on t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68b5acfbea84b1299ddd82556f8f468a
https://doi.org/10.1109/58.308498
https://doi.org/10.1109/58.308498
Publikováno v:
Investigative Radiology. 26:782-791
Experimentally obtained ultrasonic phase aberration profiles in the breast were used to investigate the impact of acoustic velocity variations on images of simulated breast lesions. The imaging properties of several phased-array transducers with vary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b345fedaec8b0da77fd3201b840a7ce
https://doi.org/10.1097/00004424-199109000-00002
https://doi.org/10.1097/00004424-199109000-00002
Autor:
James Jago, R.J. Fedewa, Mark R. Holland, Matthew Rielly, B.S. Robinson, G.C. Ng, Kirk D. Wallace, James G. Miller
Publikováno v:
IEEE Symposium on Ultrasonics, 2003.
We have previously introduced the concept of an "effective apodization" as a linear description of the nonlinearly generated harmonic components of a finite amplitude ultrasonic field. The objective of the present work is to examine the seemingly unl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::917a81187c6e49f09b1fc39eb36fe7c7
https://doi.org/10.1109/ultsym.2003.1293442
https://doi.org/10.1109/ultsym.2003.1293442
Autor:
Matthew Rielly, James G. Miller, Kirk D. Wallace, Mark R. Holland, James Jago, R.J. Fedewa, G.C. Ng, Brent S. Robinson
Publikováno v:
2002 IEEE Ultrasonics Symposium, 2002. Proceedings..
The present work measures the effective apodizations for the fundamental and second harmonic and uses the Van Cittert-Zernike theorem to predict the spatial coherence of the second harmonic portion of backscatter. Two-dimensional pseudo-array scans o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84f85ead95325b02da226f3025120ad1
https://doi.org/10.1109/ultsym.2002.1192615
https://doi.org/10.1109/ultsym.2002.1192615
Autor:
James G. Miller, Brent S. Robinson, G.C. Ng, James Jago, Matthew Rielly, R.J. Fedewa, Mark R. Holland, Kirk D. Wallace
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 50(8)
Correlation-based approaches to phase aberration correction rely on the spatial coherence of backscattered signals. The spatial coherence of backscatter from speckle-producing targets is predicted by the auto correlation of the transmit apodization (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6971b8ec3af75476f78f76d068f9c63
https://pubmed.ncbi.nlm.nih.gov/12952092
https://pubmed.ncbi.nlm.nih.gov/12952092
Publikováno v:
1996 IEEE Ultrasonics Symposium. Proceedings.
Phase aberration correction techniques require highly correlated signals at different receiver positions in order to estimate and correct for the time shifts imposed by the aberrator. The translating transmit aperture algorithm is a technique for imp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d2159a131474e562058287c454b7c32
https://doi.org/10.1109/ultsym.1996.584306
https://doi.org/10.1109/ultsym.1996.584306