Speech Cine SSFP with optical microphone synchronization and motion compensated reconstructionReport as inadecuate




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1 IADI - Imagerie Adaptative Diagnostique et Interventionnelle 2 PAROLE - Analysis, perception and recognition of speech Inria Nancy - Grand Est, LORIA - NLPKD - Department of Natural Language Processing & Knowledge Discovery 3 CIC-IT801 - Dispositif, Méthodologie et Technique pour l-IRM

Abstract : Dynamic imaging of the vocal tact is important for modeling speechthrough the acoustic-articulatory relation. The average duration of each sound isabout 80ms. Movements of each articulator, in particular the tongue, should becaptured with sufficient precision. Current clinical techniques use X-ray videofluoroscopy which involves ionizing radiation. Real-time MRI allows direct recordingof speech motion 1 but is intrinsically limited in terms of resolution and SNR.Synchronization of MRI with an acoustic device is possible 2 but requires motion ofvocal system to be highly reproducible. In this work we propose an optimized setupfor achieving dynamic MRI of speech with high spatial and temporal resolution basedon a combination of: an MR-compatible acoustic device allowing simultaneousrecording of speech during MRI; and a retrospectively gated, motion-compensatedimage reconstruction that can deal with the variability of the subject repeating thesame sentence over the acquisition.





Author: Pierre-André Vuissoz - Freddy Odille - Yves Laprie - Emmanuel Vincent - Gabriela Hossu - Jacques Felblinger -

Source: https://hal.archives-ouvertes.fr/



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