Which factors can be directly influenced by x-ray personnel during day-to-day use of x-ray equipment?

• A. 1 and 2
• B. 1 and 3
• C. 2 and 3
• D. 1, 2, and 3

Answer: (D)

In radiography, the person operating the x-ray unit directly shapes the result by controlling several practical elements during a daily exam. They set exposure factors (like kVp, mA, and exposure time) to obtain sufficient image quality while minimizing dose. They also manage beam geometry through proper collimation and alignment to restrict the field and target the right anatomy. Finally, they position the patient so the area of interest is accurately centered and oriented on the image receptor. Since all three of these aspects can be adjusted in routine practice, the choice that includes all of them best reflects what x-ray personnel can directly influence.