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相关概念视频

Parametric Surfaces01:30

Parametric Surfaces

A parametric surface in three-dimensional space is defined through a vector-valued function\begin{equation*}\mathbf{r}(u, v) = x(u, v)\mathbf{i} + y(u, v)\mathbf{j} + z(u, v)\mathbf{k}\end{equation*}where u and v are parameters within a specified domain D in the uv-plane. The functions x(u, v), y(u, v), and z(u, v) define the coordinates of points on the surface. As u and v vary over D, the position vector r(u, v) traces a continuous surface in space. This parametric representation is essential...

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脚部表面形状的三维差异通过用于定制适应性内设计的方法捕捉到.

Kimberly A Nickerson1,2, Christina Carranza1, Scott Telfer1,2,3

  • 1VA RR&D Center for Limb Loss and MoBility (CLiMB), VA Puget Sound Health Care System, Seattle, WA, USA.

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概括

不同的捕捉脚形状的方法,用于定制的糖尿病内,产生了不同的结果. 脚形状数据中的这些差异可能会影响最终的内设计和减少发作的风险的有效性.

关键词:
通过3D扫描进行3D扫描.定制的适应性内底糖尿病 糖尿病患者 糖尿病患者脚部表面形状 脚部表面形状

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科学领域:

  • 生物力学 生物力学
  • 医疗器械设计 医疗器械设计
  • 糖尿病人的足部护理

背景情况:

  • 针对糖尿病患者的定制适应性内可改善脚部接触,并通过卸载高压区域来降低的风险.
  • 足部表面形状对于内设计至关重要,传统上通过泡粉碎盒或3D扫描捕获.

研究的目的:

  • 为了比较由泡粉碎盒印象与3D扫描方法捕获的足部表面形状.
  • 评估捕捉到的脚形状的变化如何影响内设计和性能.

主要方法:

  • 使用泡粉碎盒,平板3D扫描仪和手持3D扫描仪捕捉了12名糖尿病患者的足部形状.
  • 关键脚的测量 (长度,宽度,门高度/体积) 在各种方法中进行了比较.
  • 在不同的捕获方法之间计算了网格对网格的距离.

主要成果:

  • 与两种3D扫描仪相比,泡粉碎盒产生了更大的脚长度和宽度测量.
  • 平板扫描仪产生较小的门高度和体积测量比泡粉碎盒和手持式扫描仪.
  • 与泡粉碎盒相比,3D扫描方法在捕捉特定的脚部区域方面显示出不同程度的准确性.

结论:

  • 临床方法用于捕捉适应性内的脚形状,产生不同的脚部表面输出.
  • 这些差异可能会影响糖尿病患者定制的适应性内的设计和有效性.