An optimal PA cranium projection demonstrates all the following except
a. equal distance from the lateral orbital margins to the lateral cranial cortices on both sides are equal.
b. anterior clinoids and dorsum sellae seen inferior to the ethmoid sinuses.
c. petrous ridges superimposing the supraorbital margins.
d. internal acoustic meatus visualized through the center of the orbits.
B
Health Professions
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What is derived from the following equation? X = [PB -PH20] FIO2 - PaCO2 (1.25)
a. PACO2 c. PAO2 b. PN2 d. PaO2
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For the AP projection of the chest taken at an SID of 72 inches, always angle the CR perpendicular to the IR.
Answer the following statement true (T) or false (F)
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