| A comparison of human masseter muscle thickness measured by ultrasonography and magnetic resonance imaging. | |
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MedLine Citation:
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PMID: 7717890 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Non-invasive imaging techniques such as computerized tomography, magnetic resonance imaging (MRI), and ultrasonography enable measurements of the cross-section and thickness of human jaw muscles in vivo, providing an indication of the maximal force a muscle can exert. In 15 adult Caucasian men the thickness of the masseter muscle was registered bilaterally on three different levels by ultrasonography. Scans were made on the contracted and relaxed muscle. A comparison was then made with measurements from serial MRI scans, using univariate analysis of variance for repeated measurements and Pearson's correlation coefficients. Variances of the repeated measurements were calculated for the different scanning levels and the different muscle conditions and tested for homogeneity. For both the ultrasound and MRI measurements there was no difference in thickness between the left and right muscle. The registration level with highest reproducibility was halfway between the origin and insertion. Measurements from the contracted muscle were more reproducible than those from the relaxed muscle. The relaxed muscle thickness measured by ultrasonography was smaller than that measured by MRI. The correlation between ultrasound and MRI was significant for the upper and middle level of scanning (p < 0.001). The highest correlation was found between MRI (relaxed) and ultrasound (contracted) at the middle level (R = 0.83, p < 10(-6)). The conclusion is that ultrasonography is an accurate and reproducible method for measuring the thickness of the masseter in vivo. It allows for large-scale longitudinal study of changes in jaw-muscle thickness during growth in relation to change in biomechanical properties of masticatory muscles. |
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Authors:
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M C Raadsheer; T M Van Eijden; P H Van Spronsen; F C Van Ginkel; S Kiliaridis; B Prahl-Andersen |
Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Archives of oral biology Volume: 39 ISSN: 0003-9969 ISO Abbreviation: Arch. Oral Biol. Publication Date: 1994 Dec |
Date Detail:
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Created Date: 1995-05-17 Completed Date: 1995-05-17 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0116711 Medline TA: Arch Oral Biol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 1079-84 Citation Subset: D; IM |
Affiliation:
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Department of Orthodontics, Academic Center for Dentistry Amsterdam (ACTA), The Netherlands. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Analysis of Variance Humans Magnetic Resonance Imaging Male Masseter Muscle / anatomy & histology*, ultrasonography Middle Aged Muscle Contraction Muscle Relaxation Reproducibility of Results |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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