Anatomy of CBCT

Objectives:

1. Identify the normal anatomical landmarks of the osseous structures of the maxillofacial region and the base of the skull on different Multi-Planar Reformatted (MPR) sections.
2. Correlate the radiographic appearance of any anatomical landmark both on the three-dimensional (3D) model and in the corresponding two-dimensional Multi-Planar Reformatted section.
3. Identify the normal anatomical landmarks of the base of the skull on the conventional cross-sectional axial slices and correlate the level of the slices with a three-dimensional (3D) model as a standard reference.
4. Interact with a three-dimensional model to identify topological landmarks and surface structures.

Significance:

Cone Beam CT images are typically visualized in the standardized MPR (Multi-Planar Reformatted) mode which is a post processing technique that reconstructs orthogonal slices (Axial, Coronal & Sagittal) from a 3D volume. In many cases it is the fastest and most standardized way for visualization or traversing of a 3D data set to identify a specific structure or lesion in the area of interest. The basic idea is to extract slices orthogonal to the coordinate axes in the (X, Y & Z) directions or (Axial, Coronal & Sagittal) planes when adopting medical terminology. The images in this section illustrate different anatomical landmarks of the osseous structures of the maxillofacial region and on the base of the skull. The images are presented in the axial, coronal and sagittal orthogonal views respectively.

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