At Which Level Should the Central Ray Enter the Base $3 / 4$

question 183

Multiple Choice

At which level should the central ray enter the base of the skull for the SMV projection of the sinuses?

• A) \(3 / 4\) inch posterior to the level of the EAM
• B) \(3 / 4\) inch anterior to the level of the EAM
• C) \(3 / 4\) inch below the mental protuberance
• D) 1 inch below the mental protuberance

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