A patient got an injury and complains about limited mouth opening, nasal hemorrhage, skin numbness in the infraorbital and inferior eyelid area. Objectively: there is face deformity due to retraction of soft tissues in the zygomatic area on the left, a "step"symptom in the median part of the left inferior edge of eyesocket as well as in the area of zygomaticoalveolar crest. What examination method should be applied for diagnostics of this disease?