26 Chapter 5 Acquiring Images using the Cephalometric Modality
6. Gently push in at the top part of a head clamp bar to retract both head clamp bars and to fit the
ear cones into the ear auditory canals.
7. Lower the nasion support to a vertical position.
8. Use the Frankfort positioning indicator as a visual aid to adjust the up or down inclination of the
patient head for a Frankfort plane horizontal alignment.
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