Author Question: For a lateral cervical projection, 1. the midcoronal plane is positioned parallel with the IR. ... (Read 34 times)

itsmyluck · **on:** Jul 17, 2018

For a lateral cervical projection,

1. the midcoronal plane is positioned parallel with the IR.
2. the IPL is aligned perpendicular to the IR.
3. the long axis of the cervical vertebral column is aligned with the short axis of the collimated field.
4. a 72-inch (183-cm) SID is used.
a. 1 and 3 only
b. 2 and 4 only
c. 1, 2, and 3 only
d. 2 and 3 only

Question 2

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