A high-resolution atlas and statistical model of the vocal tract from structural MRI

被引:24
|
作者
Woo, Jonghye [1 ,2 ]
Lee, Junghoon [3 ]
Murano, Emi Z. [4 ]
Xing, Fangxu [2 ]
Al-Talib, Meena [1 ]
Stone, Maureen [1 ,5 ]
Prince, Jerry L. [2 ]
机构
[1] Univ Maryland, Dept Neural & Pain Sci, Baltimore, MD 21201 USA
[2] Johns Hopkins Univ, Dept Elect & Comp Engn, Baltimore, MD 21218 USA
[3] Johns Hopkins Univ, Dept Radiat Oncol & Mol Radiat Sci, Baltimore, MD 21231 USA
[4] Johns Hopkins Univ, Dept Radiol & Radiol Sci, Baltimore, MD 21287 USA
[5] Univ Maryland, Dept Orthodont, Baltimore, MD 21201 USA
来源
COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING-IMAGING AND VISUALIZATION | 2015年 / 3卷 / 01期
关键词
vocal tract atlas; statistical model; MRI; tongue;
D O I
10.1080/21681163.2014.933679
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Magnetic resonance imaging (MRI) is an essential tool in the study of muscle anatomy and functional activity in the tongue. Objective assessment of similarities and differences in tongue structure and function has been performed using unnormalised data, but this is biased by the differences in size, shape and orientation of the structures. To remedy this, we propose a methodology to build a 3D vocal tract atlas based on structural MRI volumes from 20 normal subjects. We first constructed high- resolution volumes from three orthogonal stacks. We then removed extraneous data so that all 3D volumes contained the same anatomy. We used an unbiased diffeomorphic groupwise registration using a cross- correlation similarity metric. Principal component analysis was applied to the deformation fields to create a statistical model from the atlas. Various evaluations and applications were carried out to show the behaviour and utility of the atlas.
引用
收藏
页码:47 / 60
页数:14
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