@inproceedings{b9fee63b20be4f94bd5ea19851d9e3e6,
title = "Spatiotemporal-atlas-based dynamic speech imaging",
abstract = "Dynamic magnetic resonance imaging (DS-MRI) has been recognized as a promising method for visualizing articulatory motion of speech in scientific research and clinical applications. However, characterization of the gestural and acoustical properties of the vocal tract remains a challenging task for DS-MRI because it requires: 1) reconstructing high-quality spatiotemporal images by incorporating stronger prior knowledge; and 2) quantitatively interpreting the reconstructed images that contain great motion variability. This work presents a novel imaging method that simultaneously meets both requirements by integrating a spatiotemporal atlas into a Partial Separability (PS) model-based imaging framework. Through the use of an atlas-driven sparsity constraint, this method is capable of capturing high-quality articulatory dynamics at an imaging speed of 102 frames per second and a spatial resolution of 2.2 × 2.2 mm2. Moreover, the proposed method enables quantitative characterization of variability of speech motion, compared to the generic motion pattern across all subjects, through the spatial residual components.",
keywords = "Dynamic MRI, Partial separability, Sparsity constraint, Spatiotemporal atlas, Speech imaging",
author = "Maojing Fu and Jonghye Woo and Liang, {Zhi Pei} and Sutton, {Bradley P.}",
note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; Medical Imaging 2016: Biomedical Applications in Molecular, Structural, and Functional Imaging ; Conference date: 01-03-2016 Through 03-03-2016",
year = "2016",
doi = "10.1117/12.2216528",
language = "English (US)",
series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",
publisher = "SPIE",
editor = "Barjor Gimi and Andrzej Krol",
booktitle = "Medical Imaging 2016",
}