6 Questions
What is the recommended projection to show the dens when its upper half is not clearly visible in the open-mouth position?
AP projection with grid
In what position should the patient be placed for the AP dens projection?
Supine position
Where should the central ray enter for the AP dens projection?
Just distal to the tip of the chin
What should be adjusted to a radiation field of 5 × 5 inches (13 × 13 cm) for the AP dens projection?
Collimation
Where should the IR be centered for the AP dens projection?
To the level of the tips of mastoid processes
What is recommended to be placed under the patient’s knees for comfort during the AP dens projection?
Support
Test your knowledge on the radiographic positioning of the Atlas and Axis using the Fuchs method. Learn about the recommended AP projection to visualize the dens when its upper half is not clearly shown in the open-mouth position.
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