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Imaging from multiply scattered waves

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dc.contributor.author Gaburro, Romina
dc.contributor.author Nolan, Clifford J.
dc.contributor.author Dowling, Thomas
dc.contributor.author Cheney, Margaret
dc.date.accessioned 2013-08-13T13:26:16Z
dc.date.available 2013-08-13T13:26:16Z
dc.date.issued 2007
dc.identifier.uri http://hdl.handle.net/10344/3314
dc.description peer-reviewed en_US
dc.description.abstract We consider the problem of imaging in a region where ultrasonic waves are multiply scattered. A transducer emits ultrasonic pulses in tissue where they scatter from a heterogeneity (e.g. a tumor) in the region of interest (ROI). The reflected signals are recorded and used to produce an image of tissue. Many of the conventional imaging methods assume the wave has scattered just once (Born-approximation) from the heterogeneity before returning to the sensor to be recorded. In reality, waves can scatter several times before returning to the detector. The purpose of this paper is to show how this restriction (the Born approximation or weak, single-scattering approximation) can be partially removed by incorporating a-priori known environmental scatterers, such as a cavity wall or bones into the background velocity model in the context of acoustic medical imaging. We also show how the partial removal of the Born approximation assumption leads to an enhanced angular resolution of heterogeneities that are present. We will illustrate our method using a locally planar scatterer, which is one of the simplest possible environments for the scatterer. en_US
dc.language.iso eng en_US
dc.publisher Society of Photo-Optical Instrumentation Engineers en_US
dc.relation.ispartofseries SPIE Conference on Medical Imaging;6513, article id 651304
dc.relation.uri http://dx.doi.org/10.1117/12.712569
dc.rights Copyright © 2007 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. en_US
dc.subject ultrasonic en_US
dc.subject imaging en_US
dc.subject backprojection en_US
dc.title Imaging from multiply scattered waves en_US
dc.type info:eu-repo/semantics/conferenceObject en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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