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Abstract #4967

Flexible Retrospective Selection of Temporal Resolution in Real-Time Speech MRI Using a Golden-Ratio Spiral View Order

Yoon-Chul Kim1, Shrikanth S. Narayanan1, Krishna S. Nayak1

1Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA, United States

In speech research using real-time MRI, the analysis of vocal tract dynamics is performed retrospectively after acquiring data in real-time. A flexible selection of temporal resolution is desirable because of natural variations in speaking rate and variations in the speed of different articulators. In this work, a golden ratio temporal view order was applied. Compared to a traditional spiral acquisition, the proposed method can provide an improved aliasing artifact reduction for static postures (e.g. pause, vowel sound) and an improved temporal resolution for capturing the dynamics of rapid articulator movement (e.g. consonant to vowel transition).