Where should the center of the IR be positioned for the "open mouth" AP projection of the atlas and axis?
A) To the "Adam's apple"
B) First cervical vertebra
C) Second cervical vertebra
D) Fourth cervical vertebra

Question

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The Answer of Where should the center of the IR be positioned for the "open mouth" AP projection of the atlas and axis?
A) To the "Adam's apple"
B) First cervical vertebra
C) Second cervical vertebra
D) Fourth cervical vertebra

Where Should the Center of the IR Be Positioned for the "Open