Figure 1: Bone window axial skull computed tomography images at the level of the temporal window 1 inch (2.5 cm) anterior and superior to the external auditory canal. Homogeneous texture of the squamous temporal bone is shown in A (arrow) while heterogeneous texture with trilaminar appearance is indicated by the arrow in C. The squamous temporal bone in A, B, and C are examples of potentially good, fair, and poor acoustic windows, respectively