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Abstract #1433

Sound synchronization and motion compensated reconstruction for speech Cine MRI.

Pierre-Andr Vuissoz 1,2 , Freddy Odille 1,2 , Yves Laprie 3,4 , Emmanuel Vincent 3,5 , and Jacques Felblinger 6,7

1 Imagerie Adaptative Diagnostique et Interventionnelle, Universit de Lorraine, Nancy, France, 2 U947, INSERM, Nancy, France, 3 LORIA, Universit de Lorraine, Nancy, France, 4 LORIA, CNRS, Nancy, France, 5 LORIA, INRIA, Nancy, France, 6 University Hospital Nancy, Nancy, France, 7 CIC-IT 1433, INSERM, Nancy, France

To construct an articulatory model of the vocal tract 10 sentences were pronounced and recorded at 3T using balanced-SSFP multiphase sequences with a resolution of 256x256. An optical microphone was used to record the speech during an 80 second scan. A noise reduction algorithm is applied before aligning each acoustic sentence onto a median template sentence. A cine loop of 128 images for each sentence is reconstructed using a motion compensated sliding window algorithm (80 ms) producing a reconstructed frame rate above 100 Hz. Each cine loop enables the delineation of the vocal tract with sufficient spatial and temporal resolution.

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