A poorly positioned SMV cranial projection (Schueller method) demonstrates the mandibular mentum too far anterior to the ethmoid sinuses. How was the positioning setup mispositioned for such a projection to be obtained?
1. The patient's neck was overextended.
2. The IOML was not aligned parallel with the IR.
3. The central ray was angled too caudally.
4. The patient's head was tilted toward the right side.
a. 1 and 2 only
b. 2 and 4 only
c. 3 and 4 only
d. 1, 2, and 4 only
A
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