Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Leonid Pestov"'
Publikováno v:
Journal of Inverse and Ill-posed Problems. 29:459-466
The paper is devoted to numerical research of the medical ultrasound tomography problem. This problem consists in finding small inclusions in the breast tissue by boundary measurements of the acoustic waves generated by sources located on the boundar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73155fe87976e749edb09c6537eb940c
https://doi.org/10.1515/jiip-2020-0122
https://doi.org/10.1515/jiip-2020-0122
Autor:
Dmytro Strelnikov, Leonid Pestov
Publikováno v:
2019 Days on Diffraction (DD).
We consider acoustical tomography problem: to find a variable speed of sound in a bounded domain Ω by partial boundary measurements using the Boundary Control method. We use Neumann controls which are located at Σ × [0, T], where Σ is an open set
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77633385f70dedba38fadc976f0aef80
https://doi.org/10.1109/dd46733.2019.9016430
https://doi.org/10.1109/dd46733.2019.9016430
Publikováno v:
2019 Days on Diffraction (DD).
The work is devoted to the problem of finding small inclusions in the breast tissue by boundary measurements of acoustic waves generated by sources located on the boundary. In this work, we describe some results of simulations of this problem in 3D.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3bf353976c2c5e8c1d66defce90b469
https://doi.org/10.1109/dd46733.2019.9016418
https://doi.org/10.1109/dd46733.2019.9016418
Publikováno v:
Communications in Computer and Information Science ISBN: 9783030281625
The inverse problem of medical ultrasound tomography consists in finding small inclusions in the breast tissue by boundary measurements of acoustic waves generated by sources located on the boundary. In this work, we describe some results of simulati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85b41946cfbc3e8ee8b047792422ac15
https://doi.org/10.1007/978-3-030-28163-2_21
https://doi.org/10.1007/978-3-030-28163-2_21
Publikováno v:
2018 Days on Diffraction (DD).
The work is devoted to the problem of determining small sound speed fluctuations in glandular tissue for specific breast model [1], [2]. Our approach, proposed in [3],[4], is based on visualization of inclusions and unknown inner boundary between fat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::338ac5c9fd64c3cfa98af8acccf74b39
https://doi.org/10.1109/dd.2018.8553531
https://doi.org/10.1109/dd.2018.8553531
Autor:
Dmytro Strelnikov, Leonid Pestov
We consider initial boundary-value problem for acoustic equation in the time space cylinder Ω × (0; 2T) with unknown variable speed of sound, zero initial data, and mixed boundary conditions. We assume that (Neumann) controls are located at some pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aabc4d1116b45be62c9ea6031ea1534a
http://dspace.nbuv.gov.ua/handle/123456789/169401
http://dspace.nbuv.gov.ua/handle/123456789/169401
Publikováno v:
SEG Technical Program Expanded Abstracts 2017.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42b0d921cfcff09a1f6b5656595144ab
https://doi.org/10.1190/segam2017-17587902.1
https://doi.org/10.1190/segam2017-17587902.1
Autor:
Leonid Pestov, Alexander N. Danilin
Publikováno v:
AIP Conference Proceedings.
One of the most effective methods for detecting weak scattering objects (diffractors) associated with cracked-cavernous hydrocarbon reservoirs is the CSP (Common Scattering Point) method [1]. This method is the most effective for weakly inhomogeneous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9185dab24520f7a426318b78ecf30eda
https://doi.org/10.1063/1.5012639
https://doi.org/10.1063/1.5012639
Autor:
Leonid Pestov
Publikováno v:
Journal of Inverse and Ill-posed Problems. 23:551-553
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f1c3ce0c913f4fc31f25860891c277c
https://doi.org/10.1515/jiip-2015-0032
https://doi.org/10.1515/jiip-2015-0032
Autor:
Valeria A. Sedaikina, Leonid Pestov
Publikováno v:
2016 Days on Diffraction (DD).
This work is devoted to acoustical imaging in semi-geodesic coordinates (or ray coordinates) for 2D Marmousi model. Unlike well-known migration methods (Reverse Time Migration, Kirchhoff migration, etc.), we do not assume the knowledge of the velocit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a7482bec29e66349fb303a0abc3e3c5
https://doi.org/10.1109/dd.2016.7756876
https://doi.org/10.1109/dd.2016.7756876