| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | sibgrapi.sid.inpe.br |
| Holder Code | ibi 8JMKD3MGPEW34M/46T9EHH |
| Identifier | 6qtX3pFwXQZeBBx/Db8RA |
| Repository | sid.inpe.br/banon/2004/08.16.10.24 |
| Last Update | 2004:08.16.03.00.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/banon/2004/08.16.10.24.37 |
| Metadata Last Update | 2022:06.14.00.12.47 (UTC) administrator |
| DOI | 10.1109/SIBGRA.2004.1352939 |
| Citation Key | SilvaCheFreEliGre:2004:ImFoVi |
| Title | Image Formation in Vibro-acoustography with Sector Array Transducers  |
| Format | On-line |
| Year | 2004 |
| Access Date | 2024, Apr. 28 |
| Number of Files | 1 |
| Size | 1348 KiB |
| 2. Context | |
| Author | 1 Silva, Glauber T. 2 Chen, Shigao 3 Frery, Alejandro C. 4 Eliana Almeida, Mostafa Fatemi 5 Greenleaf, James F. |
| Affiliation | 1 Universidade Federal de Alagoas, Dep. de Tecnologia da Informacao, 57072-970 Maceio, AL -- Brasil |
| Editor | Araújo, Arnaldo de Albuquerque Comba, João Luiz Dihl Navazo, Isabel Sousa, Antônio Augusto de |
| e-Mail Address | glauber@tci.ufal.br |
| Conference Name | Brazilian Symposium on Computer Graphics and Image Processing, 17 (SIBGRAPI) - Ibero-American Symposium on Computer Graphics, 2 (SIACG) |
| Conference Location | Curitiba, PR, Brazil |
| Date | 17-20 Oct. 2004 |
| Publisher | IEEE Computer Society |
| Publisher City | Los Alamitos |
| Book Title | Proceedings |
| Tertiary Type | Full Paper |
| History (UTC) | 2008-07-17 14:10:57 :: glauber -> banon :: 2008-08-26 15:15:44 :: banon -> administrator :: 2009-08-13 20:37:35 :: administrator -> banon :: 2010-08-28 20:01:15 :: banon -> administrator :: 2022-06-14 00:12:47 :: administrator -> :: 2004 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Version Type | finaldraft |
| Keywords | Vibro-acoustography image formation acoustic beamforming |
| Abstract | This paper presents the image formation process in vibro-acoustography for systems based on sector array transducers. These transducers are an alternative to annular concave transducers. They represent an innovative technique deserving detailed assessment in vibro-acoustography applications. The system point-spread function (PSF) is defined in terms of the acoustic emission of a point-target in response to the dynamic ultrasound radiation force. This force is produced by two overlapping ultrasound beams. We calculate the radiation force on the target in a nonviscous fluid using the plane wave approximation for the ultrasound beams. The beamforming of sector array transducers is analyzed through linear acoustics. An expression for the velocity potential produced by sector arrays is derived, and the vibro-acoustography PSF is evaluated numerically. An experimental setup is design to validate the theory; the comparison is made using location and amplitude of sidelobes and spatial resolution defined by the PSF. Results show that the computed PSF is in full agreement with the PSF obtained experimentally. |
| Arrangement 1 | urlib.net > SDLA > Fonds > SIBGRAPI 2004 > Image Formation in... |
| Arrangement 2 | urlib.net > SDLA > Fonds > Full Index > Image Formation in... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/6qtX3pFwXQZeBBx/Db8RA |
| zipped data URL | http://urlib.net/zip/6qtX3pFwXQZeBBx/Db8RA |
| Language | en |
| Target File | 4496_Silva_G.ps |
| User Group | glauber administrator |
| Visibility | shown |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPEW34M/46QM2BE 8JMKD3MGPEW34M/4742MCS |
| Citing Item List | sid.inpe.br/sibgrapi/2022/05.03.00.29 8 |
| Host Collection | sid.inpe.br/banon/2001/03.30.15.38 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist area callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage edition electronicmailaddress group isbn issn label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark secondarytype serieseditor session shorttitle sponsor subject tertiarymark type url volume |