视神经乳头周围巩膜加固对筛状板形变的影响

2017/02/15   下载量: 6

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应用领域 生物相关产业
检测样本 其他
检测项目
参考标准 暂无

采用LaVision公司的DaVis8.1.3软件的DVC模块,计算了格林-拉格朗日张量的6个独立分量,亚体积元为20x20x20体像素,75%重叠,所得结果的应变精度为20个微应变。

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An annular sponge, saturated with 1.25% glutaraldehyde, was applied to the
external surface of the peripapillary sclera for 5 minutes to stiffen the sclera. Tissue
deformation was quantified in two groups of porcine eyes, using digital image correlation
(DIC) or computed tomography imaging and digital volume correlation (DVC). In group A (n
¼ 14), eyes were subjected to inflation testing before and after scleral stiffening. Digital image
correlation was used to measure scleral deformation and quantify the magnitude of scleral
stiffening. In group B (n ¼ 5), the optic nerve head region was imaged using synchrotron
radiation phase-contrast microcomputed tomography (PC lCT) at an isotropic spatial
resolution of 3.2 lm. Digital volume correlation was used to compute the full-field threedimensional
deformation within the LC and evaluate the effects of peripapillary scleral crosslinking
on LC biomechanics.

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