Author Question: For a submentovertex (SMV) cranial projection (Schueller method), the 1. central ray is aligned ... (Read 58 times)

fnuegbu · **on:** Jul 17, 2018

For a submentovertex (SMV) cranial projection (Schueller method), the

1. central ray is aligned perpendicular to the IR.
2. central ray is centered to the midsagittal plane at a level 0.75 inch (2 cm) anterior to the level of the EAM.
3. IOML is parallel with the IR.
4. midsagittal plane is perpendicular to the IR.
a. 1 and 2 only
b. 3 and 4 only
c. 1, 3, and 4 only
d. 1, 2, 3, and 4

Question 2

An SMV cranial projection (Schueller method) with accurate positioning demonstrates

1. the nasal fossae just anterior to the ethmoid sinuses.
2. the mandibular mentum slightly posterior to the ethmoid sinuses.
3. an equal distance from the mandibular ramus to lateral cranial cortex on both sides.
4. the bony nasal septum aligned with the long axis of the exposure field.
a. 2 and 3 only
b. 1 and 3 only
c. 1, 3 and 4 only
d. 1, 2, 3, and 4