A PA axial cranial projection (Caldwell method) with accurate positioning demonstrates
1. equal distance from the crista galli to the lateral cranial cortices on each side.
2. the petrous ridges aligned with the supraorbital margins.
3. the petrous pyramids superimposed over the infraorbital margins.
4. the superior orbital fissures demonstrated within the orbits.
a. 1 and 4 only
b. 2 only
c. 1, 3, and 4 only
d. 1, 2, 3, and 4
Question 2
A PA axial cranial projection (Caldwell method) with poor positioning demonstrates the petrous ridges inferior to the infraorbital margins. How was the patient positioned for such a projection to be obtained?
1. The patient's chin was not tucked enough.
2. The OML was not positioned perpendicular to the IR.
3. The patient's face was rotated toward the right side.
4. The patient's head was tilted.
a. 1 and 2 only
b. 2 only
c. 2 and 3 only
d. 4 only
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