Analysis of skin movement with respect to flexional bone motion using MR images of a hand
Analysis of skin movement with respect to flexional bone motion using MR images of a hand
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DOI：
10.1016/j.jbiomech.2005.02.001
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发表时间：
2006-01-01
影响因子：
2.4
通讯作者：
Lee, KH
中科院分区：
文献类型：
--
作者：
Ryu, JH;Miyata, N;Lee, KH
这项研究描述了分析皮肤运动相对于预定义的屈曲运动的手的方法。通过磁共振（MR）扫描不同姿势的多只手获得三维体内几何数据。开发定制软件来分割MR图像并生成多边形等值面。定义了一个新的骨坐标系（BCS）来描述皮肤表面标记测量的皮肤运动。采用表面配准技术定义BCS，使不同体位下的三维多边形表面之间的距离最小化，采集6名受试者3种体位下的MR图像，并使用皮肤表面标记进行实验。第二掌骨，这是固定在屈曲运动过程中的皮肤运动，范围从1.169至10.885毫米。而皮肤运动的距离从一个主题到另一个，一个共同的皮肤运动方向之间观察到的六个主题。对于所提出的方法的重复性评价，同一受试者的MR图像由经过培训的操作员独立处理10次。食指第二掌骨上的皮肤运动相对于预定义的屈曲运动的标准差范围为0.45至0.74mm。(c)2005爱思唯尔有限公司保留所有权利。
This study describes the methodology for analyzing skin movement with respect to the predefined flexional motion of the hand. The 3D in vivo geometric data were acquired through magnetic resonance (MR) scanning of multiple hands in various postures. Custom software was developed to segment MR images and to generate polygonal isosurfaces. A new bone coordinate system (BCS) was defined to describe the skin movement measured with the skin-surface markers. The BCS was defined by the surface registration technique, which could minimize the distance among the 3D polygonal surfaces of different postures.MR images of six subjects in the 3 postures were captured with skin-surface markers for the experiment. Skin movement on the second metacarpal bone, which was fixed during the flexional motion, ranged from 1.169 to 10.885 mm. While the distance of the skin movement varied from one subject to another, a common skin movement direction was observed among the six subjects. For the repeatability evaluation of the proposed method, the MR images of the same subject were independently processed 10 times by a trained operator. The standard deviation of the skin movement on the second metacarpal of the index finger with respect to the predefined flexional motion ranged from 0.45 to 0.74mm. (c) 2005 Elsevier Ltd. All rights reserved.