A fast and flexible MRI system for the study of dynamic vocal tract shaping.

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

SUBMITTER: Lingala SG 

PROVIDER: S-EPMC4947574 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature