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178181 Radiology

A 50 year old male patient complains of reduced mouth opening. Patient gives h/o RTA 1 week back. Submentovertex view x-ray was taken which revealed zygomatic arch fracture. Which of the following is true regarding the central beam in this x-ray-

AIt is parallel to the image receptor
BIt is directed from skull to the mandible
CIt is centered about 2 cm anterior to a line connecting the right and left condyles (Correct Answer)
DIt is posterior to a line connecting the right and left coronoid process