The reported sensitivity of CT in the detection of facial fractures ranges from 45 to 97%, with specificity of near 100%. The wide range of reported sensitivity is likely due to the difficulty of visualizing some fractures in a single plane, such as identifying an orbital floor fracture using only axial images. Coronal reformats in addition to axial source images are particularly helpful in facilitating fracture detection, thus improving sensitivity. In fact, one study found that using a combination of axial images, multiplanar reconstructions, and 3D volume-rendered reformats was more accurate than using either axial images alone or axial images with multiplanar reconstructions. Evaluation of all three sets of images yielded a sensitivity of 95.8% and specificity of 99% for maxillofacial fractures.
Source: https://radiologykey.com/maxillofacial-trauma/