Question

Why is a PA projection of the patella preferred to an AP projection?

a. Less OID
b. Less distortion of patella
c. Less magnification of patella
d. All of the above

Answer 1

A PA projection of the patella is preferred because it results in less object-to-image distance (OID), less distortion, and less magnification of the patella, providing a more accurate representation.

Step-by-step explanation:

The question is asking why a PA projection of the patella is preferred over an AP projection. The PA projection (posteroanterior) is preferred because it results in less object-to-image distance (OID), which contributes to less distortion of the image of the patella. Furthermore, there is less magnification of the patella due to the reduced OID, which results in a more accurate representation of the patella's size and shape. So, the answer is d. All of the above.