Assessment of Bone Fracture Healing Using Micro-Computed Tomography.

Assessment of Bone Fracture Healing Using Micro-Computed Tomography.
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DOI:
10.3791/64262
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发表时间:
2022-12-09
期刊:
Journal of visualized experiments : JoVE
影响因子:
--
通讯作者:
Elbarbary RA
Elbarbary RA
中科院分区:
其他
文献类型:
--
作者:
Wee H;Khajuria DK;Kamal F;Lewis GS;Elbarbary RA

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微计算机断层扫描(μCT)是在转化科学研究中表征骨折愈合过程中骨和新形成骨的三维(3D)形态最常用的成像方式。啮齿类动物长骨骨折愈合的研究通常涉及二次愈合和矿化骨痂的形成。形成的骨痂的形状和新形成的骨的密度在不同的时间点和治疗之间可能有很大的不同。尽管用于量化完整皮质骨和骨小梁参数的标准方法被广泛使用并嵌入到商业软件中,但对于分析愈合的骨痂的程序缺乏共识。这项工作的目的是描述一个标准化的方案,定量骨体积分数和愈伤组织矿物质密度。该方案描述了成像和分析过程中应考虑的不同参数,包括成像过程中的样品对准,感兴趣体积的大小,以及轮廓化以定义愈伤组织的切片数量。
Micro-computed tomography (μCT) is the most common imaging modality to characterize the three-dimensional (3D) morphology of bone and newly formed bone during fracture healing in translational science investigations. Studies of long bone fracture healing in rodents typically involve secondary healing and the formation of a mineralized callus. The shape of the callus formed and the density of the newly formed bone may vary substantially between timepoints and treatments. Whereas standard methodologies for quantifying parameters of intact cortical and trabecular bone are widely used and embedded in commercially available software, there is a lack of consensus on procedures for analyzing the healing callus. The purpose of this work is to describe a standardized protocol that quantitates bone volume fraction and callus mineral density in the healing callus. The protocol describes different parameters that should be considered during imaging and analysis, including sample alignment during imaging, the size of the volume of interest, and the number of slices that are contoured to define the callus.
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