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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