{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,3,14]],"date-time":"2024-03-14T12:44:03Z","timestamp":1710420243589},"reference-count":0,"publisher":"Acoustical Society of America (ASA)","issue":"5_Supplement","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2007,11,1]]},"abstract":"<jats:p>To provide fast and potentially more accurate three-dimensional anatomic information on European Portuguese (EP) sounds, a direct acquisition of volumetric MRI information was attempted, through a 3-D spoiled fast gradient echo sequence. The viability of the used MRI acquisition protocol relies on the possibility of obtaining consistent information. For that, two different image processing approaches were attempted: First, a so-called 2.5-D method consisting in a first segmentation on the sagittal plane, multiplanar reslicing perpendicularly to the sound propagation in the vocal tract, and new segmentation in the 45 planes obtained; second, a direct 3-D level set segmentation. A method was applied to a comprehensive single speaker corpus contemplating: Oral and nasal vowels, nasal consonants, unvoiced fricatives, and laterals. Method advantages are: Reconstruction of slices with good detail in any direction, useful to obtain slices perfectly orthogonal to the vocal tract centerline; higher SNR when compared with 2-D imaging; easier 3-D visualization; and acquisition two times faster, with positive impact in the amount of material acquired in one session with less subject effort. 3-D information was especially important for the study of nasal [P. Martins et al., InterSpeech 2007, accepted] and lateral sounds, some of them with specific characteristics for EP. [Work supported by FCT, Portuguese Research Agency, by Project HERON POSC\/PLP\/57680\/2004.]<\/jats:p>","DOI":"10.1121\/1.2942841","type":"journal-article","created":{"date-parts":[[2008,9,9]],"date-time":"2008-09-09T15:33:53Z","timestamp":1220974433000},"page":"3030-3031","update-policy":"http:\/\/dx.doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["Volumetric MRI acquisition and processing"],"prefix":"10.1121","volume":"122","author":[{"given":"In\u00eas","family":"Carbone","sequence":"first","affiliation":[{"name":"Dept. Electrons, Telecommunications and Informatics\/IEETA, Univ. of Aveiro, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}]},{"given":"Paula","family":"Martins","sequence":"additional","affiliation":[{"name":"Univ. of Aveiro, 3810-193 Aveiro, Portugal"}]},{"given":"Augusto","family":"Silva","sequence":"additional","affiliation":[{"name":"Univ. of Aveiro, 3810-193 Aveiro, Portugal"}]},{"given":"Ant\u00f3nio","family":"Teixeira","sequence":"additional","affiliation":[{"name":"Univ. of Aveiro, 3810-193 Aveiro, Portugal"}]}],"member":"231","container-title":["The Journal of the Acoustical Society of America"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.aip.org\/jasa\/article\/122\/5_Supplement\/3030\/536966\/Volumetric-MRI-acquisition-and-processing","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.aip.org\/jasa\/article\/122\/5_Supplement\/3030\/536966\/Volumetric-MRI-acquisition-and-processing","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,7,13]],"date-time":"2023-07-13T08:27:08Z","timestamp":1689236828000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.aip.org\/jasa\/article\/122\/5_Supplement\/3030\/536966\/Volumetric-MRI-acquisition-and-processing"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,11,1]]},"references-count":0,"journal-issue":{"issue":"5_Supplement","published-print":{"date-parts":[[2007,11,1]]}},"URL":"https:\/\/doi.org\/10.1121\/1.2942841","relation":{},"ISSN":["0001-4966","1520-8524"],"issn-type":[{"value":"0001-4966","type":"print"},{"value":"1520-8524","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2007,11]]},"published":{"date-parts":[[2007,11,1]]}}}