Question

what is the recommended source - to - image distance (sid) for a routine supine anteroposterior (ap) abdomen radiograph?
40 inches (102 cm)
48 inches (122 cm)
60 inches (152 cm)
72 inches (183 cm)

Explanation:

In radiography, for a routine supine anteroposterior (AP) abdomen radiograph, the standard - recommended source - to - image distance (SID) is 40 inches (102 cm). This distance helps in obtaining an appropriate image quality with minimal magnification and distortion for abdominal imaging.

Answer:

A. 40 inches (102 cm)