Zobrazeno 1 - 10
of 37
pro vyhledávání: '"M. J. Berggren"'
Publikováno v:
The Journal of the Acoustical Society of America. 131:3802-3813
Recent published results in inverse scattering generally show the difficulty in dealing with moderate to high contrast inhomogeneities when employing linearized or iteratively linearized algorithms (e.g., distorted Born iterative method). This paper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b50aab85f1fc9137aec5ee200ffcdbcf
https://doi.org/10.1121/1.3699240
https://doi.org/10.1121/1.3699240
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 44:816-822
Berenger's perfectly matched layer (PML) absorbing boundary condition for electromagnetic (EM) waves is derived to absorb 2-D and 3-D acoustic waves in finite difference time domain (FDTD) simulation of acoustic wave propagation and scattering. A PML
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e93c2d9a06cec9a8a49d33faaf829a0c
https://doi.org/10.1109/58.655197
https://doi.org/10.1109/58.655197
Autor:
Steven A. Johnson, John C. Klock, James W. Wiskin, J. Chen, D. Robinson, J. Smith, Y. Parisky, M. J. Berggren, David T. Borup
Publikováno v:
SPIE Proceedings.
Reflection ultrasound (US) has been utilized as an adjunct imaging modality for over 30 years. TechniScan, Inc. has developed unique, transmission and concomitant reflection algorithms which are used to reconstruct images from data gathered during a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f3b725a0ea3c059bc2fccbbdb44fe28
https://doi.org/10.1117/12.844910
https://doi.org/10.1117/12.844910
Autor:
Rebecca D. Yapp, Marko Orescanin, Steven A. Johnson, Roberto Lavarello, M. J. Berggren, Michael L. Oelze
Publikováno v:
2009 IEEE International Ultrasonics Symposium.
Quantitative ultrasound (QUS) techniques make use of frequency-dependent information from backscattered echoes normally discarded in conventional B-mode imaging. Using scattering models and spectral fit methods, properties of tissue microstructure ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e225481acf9ffdfe1c3161ace298531a
https://doi.org/10.1109/ultsym.2009.5442021
https://doi.org/10.1109/ultsym.2009.5442021
Autor:
Gloria J. Wiens, M. J. Berggren
Publikováno v:
Journal of Dynamic Systems, Measurement, and Control. 113:748-752
An algorithm has been presented in which the role of inertia sensitivities in path planning of robots is investigated. The main objective is to obtain a path, from point A to point B in joint coordinates, in which the nonlinear forces (centripetal an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cbd755495c3ff96967a1451105b43f3
https://doi.org/10.1115/1.2896486
https://doi.org/10.1115/1.2896486
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 46(1)
We present a method to incorporate the relaxation dominated attenuation into the finite-difference time-domain (FDTD) simulation of acoustic wave propagation in complex media. A dispersive perfectly matched layer (DPML) boundary condition, which is s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc565885f081acbea367a932c84952aa
https://pubmed.ncbi.nlm.nih.gov/18238394
https://pubmed.ncbi.nlm.nih.gov/18238394
Autor:
M. J. Berggren, R. Bell, S. Olsen, Barry K. Hanover, D. Robinson, James W. Wiskin, Steven A. Johnson, T. Abbott, David T. Borup
Publikováno v:
Acoustical Imaging ISBN: 9781402057205
TechniScan Medical Systems, Inc. is using novel inverse scattering methods to provide a unique method for calculating ultrasound characteristics of speed and attenuation of sound traveling through human tissue. In this paper we describe basic system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50ecf9b1a3535b1d330267754152ac4d
https://doi.org/10.1007/1-4020-5721-0_17
https://doi.org/10.1007/1-4020-5721-0_17
Publikováno v:
Acoustical Imaging ISBN: 9781402057205
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::066eab718ceff9d6e41b48d95b96c433
https://doi.org/10.1007/1-4020-5721-0_20
https://doi.org/10.1007/1-4020-5721-0_20
Publikováno v:
Proceedings of OCEANS '93.
This Oceans 93 paper describes full nonlinear inversion that gives quantitative reconstructions of submerged and/or buried objects with the aid of a layered Greens function. The computational speed is preserved by use of Fast Fourier Transforms and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e49761946bf8e25b9a38c958c7250a24
https://doi.org/10.1109/oceans.1993.326231
https://doi.org/10.1109/oceans.1993.326231
Publikováno v:
Proceedings of OCEANS '93.
Comparisons are given of powerful inverse scattering methods for quantitative imaging of ocean bottoms and subbottoms with less computational intensive "quick look" methods. The advantages and tradeoffs of the various methods are discussed. The relat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75d93bac322bdf0035fee8e8ba2ad00c
https://doi.org/10.1109/oceans.1993.325959
https://doi.org/10.1109/oceans.1993.325959