FIG 1. A, Panoramic reconstruction from an axial CT scan (effective section thickness of 1 mm) of a severely atrophic mandible. The cut line for this reconstruction was centered on the mandibular canal (arrowheads), which is clearly depicted in terms of well-distinguished bony delineations.

B, Panoramic reconstruction from an axial T1-weighted (6.2/20) MR image (31° flip angle and an effective section thickness of 0.5 mm) of the same mandible as in A also directly shows the course of the neurovascular bundle (arrowheads), which is characterized by moderate signal intensity. Differentiation of nerves and vessels is not possible.