An AP atlas and axis projection with poor positioning demonstrates the dens superimposed over the posterior occiput
The upper incisors are demonstrated about 3 inches (7.5 cm) superior to the posterior occiput's inferior edge. How could the positioning setup be adjusted for an optimal projection to be ob-tained?
1. Adjust the central ray 15 degrees caudally.
2. Tuck the patient's chin 1.5 inches (3.75 cm).
3. Align the acanthiomeatal line perpendicular to the imaging table.
4. Move the central ray and IR 3 inches (7.5 cm) inferiorly.
a. 1 and 2 only
b. 2 and 3 only
c. 1, 2, and 3 only
d. 3 and 4 only
C
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A) Is set by the FDA. B) Is set by the APhA. C) Varies. D) Has been reduced to zero because of online resources.
Because elevation, slope, and orientation are fairly stable, __________ tends to be the most predictable environmental element of a strategic plan
Fill in the blank(s) with correct word