Radiology General c03c5c4d

In cephalometric radiography, the distance between the subject and the source of X-ray is

2 feet

48 inches

4.8 metres

5 feet

High-Yield Explanation

By convention, the distance from the X-ray source to the subject's midsagittal plane is 5 feet. Contemporary Orthodontics, William Proffit, 6th ed, pg-174

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