Abstract

Purpose
The aim of this work was to develop and evaluate an MRI‐based system for study of dynamic vocal tract shaping during speech production, which provides high spatial and temporal resolution.
Methods
The proposed system utilizes (a) custom eight‐channel upper airway coils that have high sensitivity to upper airway regions of interest, (b) two‐dimensional golden angle spiral gradient echo acquisition, (c) on‐the‐fly view‐sharing reconstruction, and (d) off‐line temporal finite difference constrained reconstruction. The system also provides simultaneous noise‐cancelled and temporally aligned audio. The system is evaluated in 3 healthy volunteers, and 1 tongue cancer patient, with a broad range of speech tasks.
Results
We report spatiotemporal resolutions of 2.4 × 2.4 mm2 every 12 ms for single‐slice imaging, and 2.4 × 2.4 mm2 every 36 ms for three‐slice imaging, which reflects roughly 7‐fold …

Date

2017

Authors

Sajan Goud Lingala, Yinghua Zhu, Yoon‐Chul Kim, Asterios Toutios, Shrikanth Narayanan, Krishna S Nayak

Journal

Magnetic resonance in medicine

Volume

77

Issue

1

Pages

112-125