ANATOMICAL CROSS-SECTIONAL GEOMETRY AND MASS DISTRIBUTION FOR CHILDREN. VOLUME 2

Conventional methods for evaluating human body geometry are multi-plane x-ray images, segmented cadaveric trucks and biostereometrics. These approaches are crude estimated methods and do not reveal detailed tissue structures and mass density distribution of the body. With the recent developed x-ray computerized tomography (CT), it is possible to use this method to extract detailed body structures and their mass density distributions. 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. Some immediate applications of this data are inputs to finite elements and lumped parameter biodynamics models, computer simulation of vehicle crash victims and designing crash dummies. Moreover, the CT approach provides an excellent potential for in vivo injury recovery study. Vol. I of this report contains the methodology and Vol. II contains derived anatomical geometry and mass distribution.

• Corporate Authors:

  Georgetown University

  School of Business Administration
  Washington, DC  United States  20007

  University of Iowa, Iowa City

  Biomedical Engineering Program
  Iowa City, IA  United States  52242

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Huang, H K
• Publication Date: 1981-3-31

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 290 p.

Subject/Index Terms

• TRT Terms: Anatomy; Biodynamics; Cadavers; Children; Crash victims; Cross sectional studies; Cross sections; Databases; Dummies; Finite element method; Geometry; Information processing; Mass; Mathematical models; Simulation; Tomography; X ray analysis
• Uncontrolled Terms: Models
• Subject Areas: Highways; Safety and Human Factors; I84: Personal Injuries;

Filing Info

• Accession Number: 00396128
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: Final Rpt., HS-806 325
• Contract Numbers: DOT-HS-7-01661
• Files: HSL, TRIS, USDOT
• Created Date: Aug 31 1985 12:00AM