Question

what is the recommended source - to - image distance (sid) for a lordotic chest radiograph?
30 inches (76 cm)
40 inches (102 cm)
60 inches (152 cm)
72 inches (183 cm)

Explanation:

In radiography, for a lordotic chest radiograph, a 72 - inch (183 cm) source - to - image distance (SID) is recommended to reduce magnification and distortion and provide a more accurate representation of the anatomical structures.

Answer:

D. 72 inches (183 cm)