Anisotropy of light propagation in human skin
Anisotropy of light propagation in human skin
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DOI：
10.1088/0031-9155/45/10/310
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发表时间：
2000-10-01
影响因子：
3.5
通讯作者：
Patterson, MS
中科院分区：
文献类型：
--
作者：
Nickell, S;Hermann, M;Patterson, MS
利用空间分辨的稳态漫反射技术，在人体皮肤中发现可见光和近红外光的传播具有方向性。皮肤的折合散射系数m(S)‘在同一位置的不同传播方向之间变化高达两倍。这种各向异性被认为是由于真皮中胶原纤维的优先取向造成的，正如朗格的皮肤张力线所描述的那样。考察部分胶原纤维取向影响的蒙特卡罗模拟支持这一假说。这种观察结果对依赖皮肤光学特性的非侵入性诊断方法有影响，它可以非侵入性地用于确定劈裂线的方向，以最大限度地减少手术切口造成的疤痕。
Using spatially resolved, steady state diffuse reflectometry, a directional dependence was found in the propagation of visible and near infrared light through human skin in vivo. The skin's reduced scattering coefficient mu(s)' varies by up to a factor of two between different directions of propagation at the same position. This anisotropy is believed to be caused by the preferential orientation of collagen fibres in the dermis, as described by Langer's skin tension lines. Monte Carlo simulations that examine the effect of partial collagen fibre orientation support this hypothesis. The observation has consequences for non-invasive diagnostic methods relying on skin optical properties, and it could be used non-invasively to determine the direction of lines of cleavage in order to minimize scars due to surgical incisions.