Measuring tongue motion from tagged cine-MRI using harmonic phase (HARP) processing

被引：70

作者：

Parthasarathy, Vijay ^{[1
]}

Prince, Jerry L.

Stone, Maureen

Murano, Erni Z.

机构：

[1] Johns Hopkins Univ, Dept Elect & Comp Engn, Baltimore, MD 21218 USA

[2] Univ Maryland, Sch Dent, Dept Biomed Sci & Orthodont, Baltimore, MD 21201 USA

[3] Univ Maryland, Sch Dent, Dept Radiol, Baltimore, MD 21201 USA

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2007年 / 121卷 / 01期

关键词：

D O I：

10.1121/1.2363926

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A cine series of tagged magnetic resonance (MR) images of the tongue is used to measure tongue motion and its internal deformation during speech. Tagged images are collected in three slice orientations (sagittal, coronal, and axial) during repetitions of the utterance "disouk" (/disuk/). A new technique called harmonic phase MRI (HARP-MRI) is used to process the tagged MR images to measure the internal deformation of the tongue. The measurements include displacement and velocity of tissue points, principal strains, and strain in the line-of-action of specific muscles. These measurements are not restricted to tag intersections, but can be calculated at every pixel in the image. The different motion measurements complement each other in understanding the tongue kinematics and in hypothesizing the internal muscle activity of the tongue. (c) 2007 Acoustical Society of America.

引用

页码：491 / 504

页数：14

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