A patient is unable to hyperextend the neck enough for an SMV cranial projection (Schueller method). How should the positioning setup be adjusted for an optimal projection to be obtained?
a. Align the central ray perpendicular to the IOML.
b. Extend the patient's neck as far as possible and use a perpendicular central ray.
c. Align the central ray perpendicular to the OML.
d. The projection cannot be obtained.
A
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