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Abstract #0689

High spatio-temporal resolution multi-slice real time MRI of speech using golden angle spiral imaging with constrained reconstruction, parallel imaging, and a novel upper airway coil

Sajan Goud Lingala 1 , Yinghua Zhu 1 , Yoon-Chul Kim 2 , Asterios Toutios 1 , Shrikanth Narayanan 1 , and Krishna S Nayak 1

1 Electrical Engineering, University of Southern California, Los Angeles, California, United States, 2 Samsung Medical Center, Seoul, Korea

Real time MRI (RT-MRI) is a powerful tool to visualize the complex spatio-temporal coordination of upper airway structures during speech production. In this work, we propose to improve imaging trade-offs in RT-MRI by utilizing (a) a novel upper airway coil which has improved sensitivity in upper airway regions of interest, (b) a flexible slice selective spiral acquisition with golden angle time interleaving, and (c) a temporal constrained reconstruction scheme. With the proposed approach, we show improved depiction of fine articulatory movements (such as production of consonant clusters) by enabling time resolution of 12 msec for single slice imaging, and 36 msec for concurrent three slice imaging.

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