Huang H K, Suarez F R
J Biomech. 1983;16(10):821-32. doi: 10.1016/0021-9290(83)90006-4.
The purpose of this study was to determine the cross-sectional geometry and mass density distribution of a young porcine subject using the X-ray computerized tomographic (CT) method and to perform a comparative study of anatomical features of this subject and a 3 yr old female child specimen. The cross-sectional CT scans of the porcine subject were obtained at 1 cm intervals. 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 tensor for each cross section and for each anatomical structure in a section were computed based on the CT numbers. The porcine subject was then sacrificed, frozen, sectioned and photographed. These sectional photographs were then compared with those obtained from the CT method. Tabulated cross-sectional mass and inertia tensor obtained from CT scans of the porcine subject were also used to compare with similar results derived from previously completed CT scans of the 3 yr old female child specimen. In particular, the comparisons were made on the location of the center of gravity and the inertia tensor in the head, neck, head and neck and cervical spine regions. Some immediate applications of this data are inputs to finite element models, lumped parameter biodynamic models, computer simulation of vehicle crash victims, and dummy design.
本研究的目的是使用X射线计算机断层扫描（CT）方法确定一只幼年猪的横断面几何形状和质量密度分布，并对该猪与一名3岁女童标本的解剖特征进行对比研究。以1厘米的间隔获取该猪的横断面CT扫描图像。通过标准图像处理技术获取每个横断面的轮廓以及每个横断面内选定解剖结构的轮廓。基于CT数值计算每个横断面以及横断面内每个解剖结构的质量和惯性张量。然后处死该猪，冷冻、切片并拍照。将这些切片照片与通过CT方法获得的照片进行比较。从猪的CT扫描中获得的列表形式的横断面质量和惯性张量，也用于与先前完成的3岁女童标本的CT扫描得出的类似结果进行比较。特别是，对头部、颈部、头部和颈部以及颈椎区域的重心位置和惯性张量进行了比较。这些数据的一些直接应用包括作为有限元模型、集总参数生物动力学模型、车辆碰撞受害者计算机模拟以及假人设计的输入。
