Single slice microwave imaging of breast cancer by reverse time migration.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.15917
Abstract: PURPOSE Microwave imaging of breast cancer is considered and a new microwave imaging prototype including the imaging algorithm, the antenna array, and the measurement configuration is presented. The prototype aims to project the geometrical features… read more here.
Keywords: reverse time; microwave imaging; breast; single slice ... See more keywords
First-Order Acoustic Wave Equation Reverse Time Migration Based on the Dual-Sensor Seismic Acquisition System
Sign Up to like & getrecommendations! Published in 2017 at "Pure and Applied Geophysics"
DOI: 10.1007/s00024-017-1468-3
Abstract: We analyze the mathematical requirements for conventional reverse time migration (RTM) and summarize their rationale. The known information provided by current acquisition system is inadequate for the second-order acoustic wave equations. Therefore, we introduce a… read more here.
Keywords: reverse time; dual sensor; time migration; sensor rtm ... See more keywords
An encoder-decoder deep surrogate for reverse time migration in seismic imaging under uncertainty
Sign Up to like & getrecommendations! Published in 2021 at "Computational Geosciences"
DOI: 10.1007/s10596-021-10052-3
Abstract: Seismic imaging faces challenges due to the presence of several uncertainty sources. Uncertainties exist in data measurements, source positioning, and subsurface geophysical properties. Reverse time migration (RTM) is a high-resolution depth migration approach useful for… read more here.
Keywords: uncertainty; reverse time; time migration; time ... See more keywords
Topography Least-Squares Reverse-Time Migration Based on Adaptive Unstructured Mesh
Sign Up to like & getrecommendations! Published in 2019 at "Surveys in Geophysics"
DOI: 10.1007/s10712-019-09578-0
Abstract: Least-squares reverse-time migration (LSRTM) attempts to invert the broadband-wavenumber reflectivity image by minimizing the residual between observed and predicted seismograms via linearized inversion. However, rugged topography poses a challenge in front of LSRTM. To tackle… read more here.
Keywords: topography; least squares; reverse time; squares reverse ... See more keywords
Conjugate gradient and cross-correlation based least-square reverse time migration and its application
Sign Up to like & getrecommendations! Published in 2017 at "Applied Geophysics"
DOI: 10.1007/s11770-017-0626-9
Abstract: Although conventional reverse time migration can be perfectly applied to structural imaging it lacks the capability of enabling detailed delineation of a lithological reservoir due to irregular illumination. To obtain reliable reflectivity of the subsurface… read more here.
Keywords: reverse time; time migration; least square; migration ... See more keywords
An efficient and accurate finite-difference operator using adaptively discretized grids and its application for 3D least-squares reverse-time migration
Sign Up to like & getrecommendations! Published in 2020 at "Arabian Journal of Geosciences"
DOI: 10.1007/s12517-020-05417-4
Abstract: Least-square reverse-time migration (LSRTM) is a powerful tool to image subsurface reflectivity with high resolution. It has the ability to reduce migration artifacts, balance amplitudes, and improve imaging resolution. However, the large amount of computation… read more here.
Keywords: reverse time; time; time migration; migration ... See more keywords
3D reverse time migration using a wavefield domain dynamic approach
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2021.104345
Abstract: Abstract 3D Reverse-time migration (RTM) is a powerful technique for imaging complex geologic structures. This approach requires a significant computational effort, demanding a high amount of memory for storing the source's wavefields, consequently leading to… read more here.
Keywords: approach; reverse time; rtm; domain ... See more keywords
Reverse time migration of acoustic waves for imaging based defects detection for concrete and CFST structures
Sign Up to like & getrecommendations! Published in 2019 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2018.07.011
Abstract: Abstract Ultrasonic non-destructive testing (NDT) technology has been widely used for defect inspection of concrete structures in civil engineering. However, most of the current data processing methods can only provide qualitative information regarding the existence… read more here.
Keywords: reverse time; time migration; cfst; concrete cfst ... See more keywords
A comparison of two reflectivity parametrizations in acoustic least-squares reverse time migration
Sign Up to like & getrecommendations! Published in 2019 at "Exploration Geophysics"
DOI: 10.1080/08123985.2019.1682459
Abstract: ABSTRACT In comparison with conventional reverse time migration (RTM), least-squares RTM (LSRTM) can improve imaging resolution and compensate irregular illumination caused by acquisition geometry and complex structures. Since proposed, as an advanced version of RTM,… read more here.
Keywords: reverse time; reflectivity; time migration; least squares ... See more keywords
Reproduction wavefield reverse time migration
Sign Up to like & getrecommendations! Published in 2021 at "Exploration Geophysics"
DOI: 10.1080/08123985.2021.1903810
Abstract: The reverse time migration (RTM) aims to image subsurface reflectors by incorporating with the two-way wave equation. RTM has advantages that it does not have dip limitations and can generate subsurface images clearly even in… read more here.
Keywords: reproduction wavefield; reverse time; time migration; wavefield reverse ... See more keywords
Auto-Tuning of Dynamic Scheduling Applied to 3D Reverse Time Migration on Multicore Systems
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3015045
Abstract: Reverse time migration (RTM) is an algorithm widely used in the oil and gas industry to process seismic data. It is a computationally intensive task that suits well in parallel computers. Methods such as RTM… read more here.
Keywords: time; reverse time; dynamic scheduling; multicore systems ... See more keywords