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Questions and Answers
What is the recommended projection to show the dens when its upper half is not clearly visible in the open-mouth position?
What is the recommended projection to show the dens when its upper half is not clearly visible in the open-mouth position?
- PA projection with grid
- AP projection with grid (correct)
- AP projection without grid
- PA projection without grid
In what position should the patient be placed for the AP dens projection?
In what position should the patient be placed for the AP dens projection?
- Decubitus position
- Supine position (correct)
- Prone position
- Left lateral position
Where should the central ray enter for the AP dens projection?
Where should the central ray enter for the AP dens projection?
- Just distal to the tip of the chin (correct)
- At the level of the hyoid bone
- At the level of the thyroid cartilage
- At the level of earlobes
What should be adjusted to a radiation field of 5 × 5 inches (13 × 13 cm) for the AP dens projection?
What should be adjusted to a radiation field of 5 × 5 inches (13 × 13 cm) for the AP dens projection?
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Where should the IR be centered for the AP dens projection?
Where should the IR be centered for the AP dens projection?
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What is recommended to be placed under the patient’s knees for comfort during the AP dens projection?
What is recommended to be placed under the patient’s knees for comfort during the AP dens projection?
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