Ellipsoid analysis of calvarial shape

The Cleft Palate-craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association
Petra A JacobsenAlex A Kane

Abstract

The purpose of this research was to develop a novel quantitative method of describing calvarial shape by using ellipsoid geometry. The pilot application of Ellipsoid Analysis was to compare calvarial form among individuals with untreated unilateral coronal synostosis, metopic synostosis, and sagittal synostosis and normal subjects. The frontal, parietal, and occipital bones of 10 preoperative patients for each of the four study groups were bilaterally segmented into six regions using three-dimensional skull reconstructions generated by ANALYZE imaging software from high-resolution computed tomography scans. Points along each segment were extracted and manipulated using a MATLAB-based program. The points were fit to the least-squares nearest ellipsoid. Relationships between the six resultant right and left frontal, parietal, and occipital ellipsoidal centroids (FR, FL, PR, PL, OR, and OL, respectively) were tested for association with a synostotic group. Results from the pilot study showed meaningful differences between length ratio, angular, and centroid distance relationships among synostotic groups. The most substantial difference was exhibited in the centroid distance PL-PR between patients with sagittal synostosis and metop...Continue Reading

References

Jun 1, 1996·Medical Image Analysis·T McInerney, D Terzopoulos
Mar 26, 2003·American Journal of Physical Anthropology·Joan T RichtsmeierSubhash R Lele
Jul 29, 2003·Proceedings of the National Academy of Sciences of the United States of America·John D Storey, Robert Tibshirani

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Citations

Jan 19, 2012·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Defeng WangChristopher M Riggs

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