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21 May 1999 Midsagittal surface measurement of the head: an assessment of craniofacial asymmetry
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Left/right craniofacial asymmetry is typically measured by comparing distances between standard anatomical landmarks. However, these measurements are of limited use for visualizing and quantifying the asymmetry at non-landmark locations. This work presents a method for calculating, measuring and visualizing the planar deviation of the midsagittal surface for the purpose of craniofacial dysmorphology assessment, pre-operative corrective surgery planning, and post-operative evaluation. A set of midsagittal landmarks are used to define a reference midsagittal plane and to define a non-planar surface that passes through the landmarks. The surface is modeled as a thin-plate spline that can be visualized in 3D using a virtual reality markup language browser and it can be fused with the original volume rendered CT data using VoxelViewTM.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gary E. Christensen, Hans J. Johnson, Tron Darvann, Nuno Hermann, and Jeffrey L. Marsh M.D. "Midsagittal surface measurement of the head: an assessment of craniofacial asymmetry", Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999);

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