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Fig. 2A. —70-year-old female cadaver with fracture of medial wall and floor of left maxillary sinus (arrows) and fracture of frontal sinus (arrowhead). Coronal multiplanar reformations (slice thickness, 1 mm; overlap, 0.5 mm) obtained from 4 x 1 mm collimation in ultra-high-resolution mode show clear evidence of fractures with 120 mAs (A), fractures not reliably visible with 90 mAs (B), and all fractures insufficiently detectable with 60 mAs.

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