Fig. 13.

A 90-year-old male was referred for staging of a gingival tumor originating at the right mandible. An MRI was contraindicated, and a DECT of the oral cavity was performed. Mixed images in soft tissue kernel (a) and bone kernel (b); iodine fusion images (c), and BME reconstructions (d). An enhancing tumor was found at the right mandible (a, arrow) overlying an area of eroded or remodeled mandible (b) with sclerosis. Iodine fusion images additionally suggested invasion of the floor of the mouth, which was not seen on the mixed images (c, arrow). BME images did not show bone marrow edema. At histopathology, no osseous invasion was found