Anatomical Cross-Sectional Geometry and Mass Distribution for Children. Volume 1

摘要

The purpose of this study was to generate anatomical cross-sectional geometry and mass density distribution of children using the CT method. Five cadaveric specimens, with age ranging from newborn to seven, were studied. Cross-sectional CT scans of these specimens were obtained at one centimeter interval from the head to the ankle joints. From these cross-sectional CT images, the outlines of each cross section and of selected anatomical components within each section were obtained by standard picture processing techniques. The mass and inertia tensors for each cross section were estimated based on a conversion from x-ray absorption coefficients of tissues appearing on a CT scan to their mass densities. In order to store and retrieve this mass of information, a data base structure had been designed. Also presented was a discretization procedure and the generation of an internal mesh which could be used for subsequent finite element analysis.