| Superquadric modeling of cranial and cerebral shape and asymmetry. | |
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MedLine Citation:
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PMID: 16323182 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A new method for quantifying cranial and cerebral shape and asymmetry fits symmetric superquadric geometric models to three-dimensional coordinate measurements. Asymmetry is quantified as radial residuals of the surface data points from their best-fit superquadric models. Twenty human crania, 10 magnetic resonance imaging (MRI) exocranial surfaces, and 10 corresponding MRI cerebral surfaces as well as two infant head casts were digitized and modeled using superquadrics. Superquadric parameters have simple geometric interpretation, are very reproducible, and demonstrated statistically significant differences between crania of Amerindian ancestry and MRI exocranial surfaces of European ancestry used in this study. Superquadric models demonstrated strong congruence between MRI exocranial and cerebral surfaces. Typical asymmetry was 1-5 mm. Lastly, polar contour plots of radial residuals for head casts before and after orthotic cranioplasty demonstrated the efficacy of using superquadrics to quantify positional plagiocephaly and synostosis of infant crania. |
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Authors:
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H J Sommer; R B Eckhardt; T Y Shiang |
Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: American journal of physical anthropology Volume: 129 ISSN: 0002-9483 ISO Abbreviation: Am. J. Phys. Anthropol. Publication Date: 2006 Feb |
Date Detail:
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Created Date: 2006-01-17 Completed Date: 2006-09-01 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0400654 Medline TA: Am J Phys Anthropol Country: United States |
Other Details:
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Languages: eng Pagination: 189-95 Citation Subset: IM |
Affiliation:
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Department of Mechanical and Nuclear Engineering, Pennsylvania State University, University Park, 16802, USA. hjs1@psu.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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American Native Continental Ancestry Group Anthropometry / methods* European Continental Ancestry Group Humans Magnetic Resonance Imaging Models, Theoretical* Skull / anatomy & histology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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