Author Question: A PA cranial projection with accurate positioning demonstrates 1. equal distances from the ... (Read 26 times)

joesmith1212 · **on:** Jul 17, 2018

A PA cranial projection with accurate positioning demonstrates

1. equal distances from the lateral orbital margin to the lateral cranial cortices on each side.
2. the anterior clinoids and dorsum sellae superior to the ethmoid sinuses.
3. the petrous ridges horizontally through the lowest third of the orbits.
4. the internal acoustic meatus horizontally through the orbital center.
a. 1 and 2 only
b. 3 only
c. 1, 2, and 4 only
d. 1, 2, 3, and 4

Question 2

A less than optimal lateral sternum projection that does not demonstrate the sternum in profile and visualizes the superior heart shadow extending anterior to the sternum

a. resulted because the central ray was centered too posteriorly.
b. resulted because of poor costal breathing technique.
c. could be improved by rotating the right thorax anteriorly.
d. also would demonstrate the left thorax rotated posteriorly.