Skull radiography routinely includes a posterior-anterior (PA) projection.
a. reduce dose to the lens of the eye.
b. reduce dose to the cerebellum.
c. reduce dose to the paranasal sinuses.
d. reduce dose to the thyroid.
a. reduce dose to the lens of the eye.
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PA oblique finger projection
a. Phalanges demonstrate equal concavity. b. Phalanges demonstrate more concavity on one side than on the other. c. Phalanges demonstrate concavity on one side and convexity on the other.
While testing vision with a Snellen chart, 20/20 vision means that ____
A) the patient can read the entire chart at 20 feet B) the patient can read the 20-inch line while standing 20 feet from the chart C) the patient can read 20 different letters while standing 20 feet from the chart D) the patient can see characters 20 millimeters high while standing 20 feet from the chart