期刊
JOURNAL OF ANATOMY
卷 240, 期 2, 页码 268-278出版社
WILEY
DOI: 10.1111/joa.13556
关键词
cartilaginous end plate; facet joint cartilage; intervertebral disc; synchrotron radiation micro-CT; vascular network
资金
- National Natural Science Foundation of China [82030071, 81874004]
- Natural Science Foundation of Hunan Province [2020JJ4874]
- Science and Technology Commission of Hunan Province of China [2017SK2061]
- Fundamental Research Funds for the Central Universities of Central South University [2020zzts270]
This study utilized synchrotron radiation micro-CT to investigate the thoracic spine in mice, revealing that this imaging technique is an ideal method for high-resolution visualization and 3D morphometric analysis of the entire spinal motion segments and spinal vascular network.
The structure of spinal motion segments and spinal vasculature is complicated. Visualizing the three-dimensional (3D) structure of the spine may provide guidance for spine surgery. However, conventional imaging techniques fail to simultaneously obtain 3D images of soft and hard tissues, and achieving such coimaging states of the spine and its vascular networks remains a challenge. Synchrotron radiation micro-CT (SR mu CT) provides a relatively effective and novel method of acquiring detailed 3D information. In this study, specimens of the thoracic spine were obtained from six mice. SR mu CT was employed to acquire 3D images of the structure, and histologic staining was performed for comparisons with the SR mu CT images. The whole spinal motion segments and the spinal vascular network were simultaneously explored at high resolution. The mean thickness of the cartilaginous end plates (CEPs) and the volume of the intervertebral discs (IVDs) were calculated. The surface of the CEPs and the facet joint cartilage (FJC) were presented as heat maps, which allowed for direct visualization of the thickness distribution. Regional division revealed heterogeneity among the ventral, central, and dorsal parts of the CEPs and between the superior and inferior parts of the facet processes. Moreover, the connections and spatial morphology of the spinal vascular network were visualized. Our study indicates that SR mu CT imaging is an ideal method for high-resolution visualization and 3D morphometric analysis of the whole spinal motion segments and spinal vascular network.
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