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首页> 外文会议>Mediterranean Conference on Medical and Biological Engineering and Computing >The Influence of Slice Orientation in 3D CBCT Images on Measurements of Anatomical Structures
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The Influence of Slice Orientation in 3D CBCT Images on Measurements of Anatomical Structures

机译：切片取向在三维CBCT图像中对解剖结构测量的影响

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Longitudinal anatomical structures can be studied through slicing perpendicularly to their general orientation. The digital nature of 3D cone beam computed tomography (CBCT) images creates a need to define the general orientation of such structures. The aim is to investigate the influence of slice orientation on the measurements of thickness and overall width of a mandible. Most often the mandibular structure is explored by browsing through coronal views. A more sophisticated approach consists of the study of slices perpendicular to the general shape of the mandible obtained through tracing the mandibular arch in an occlusal view. Slicing perpendicularly to the mandibular canal containing the inferior alveolar nerve (IAN) is presented as a third slicing strategy. The latter mimics the slicing approach used in classical anatomic studies of the mandible. When comparing all three strategies, significant differences in measurements of the buccal, lingual and inferior thickness of the walls can be detected. In 69% of cases, the difference in overall width at the level of the IAN exceeds one mm between measurements on a slice constructed perpendiculary to the IAN and a coronal slice.
机译：纵向解剖结构可以通过垂直于它们的通用方向来研究。 3D锥梁计算机断层扫描（CBCT）图像的数字性质创造了确定这种结构的一般方向。目的是研究切片取向对薄下颌骨厚度和总宽度测量的影响。大多数情况下，通过浏览冠心视图探索下颌结构。一种更复杂的方法包括通过在咬合视图中追踪下颌弓来获得的颌骨垂直于颌骨的一般形状的研究。垂直于含有下牙槽神经（IAN）的下颌管垂直切片作为第三切片策略。后者模仿了颌骨典型解剖学研究的切片方法。当比较所有三种策略时，可以检测到墙壁的颊，舌和较差厚度的测量值的显着差异。在69％的病例中，IAN水平的总宽度的差异超过了在对IAN和冠状切片构成的切片上的测量之间的一个mm之间。

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