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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-

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Correct Answer:
It is centered about 2 cm anterior to a line connecting the right and left condyles
Description:
Submentovertex view- The central beam is perpendicular to the image receptor, directed from below the mandible toward the vertex of the skull (hence the name submentovertex), and centered about 2 cm anterior to a line  connecting the right and left condyles. White and Pharoah, Oral radiology, ed 7th, pg-161
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