J Acoust Soc Am. 2007 Jan;121(1):491-504.

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

Parthasarathy V, Prince JL, Stone M, Murano EZ, Nessaiver M.

Source

Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA.

Abstract

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.

PMID:: 17297803; [PubMed - indexed for MEDLINE]

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Research Support, N.I.H., Extramural

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Grant Support

R01 DC01758/DC/NIDCD NIH HHS/United States

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Cited by 3 PubMed Central articles

Quantification of Three Dimensional Tongue Motion During Speech Using zHARP. [Proc Soc Photo Opt Instrum Eng...]
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