Final answer:
In radiographic imaging, the x-ray beam and light beam must coincide to within 2 inches of the SID for precise and safe imaging.
Step-by-step explanation:
The question is related to the alignment accuracy required for an x-ray system. In radiographic imaging, the x-ray beam and the light beam used for positioning should coincide closely to ensure that the image accurately represents the targeted area of the patient's body. According to radiography standards, the x-ray beam and light beam must coincide to within 2 inches of the Source-to-Image Distance (SID). This ensures precision and safety in radiographic procedures.
The x-ray beam and light beam must coincide to within 2 inches of the SID (Source-to-Image Distance).