Final answer:
Calibration of x-ray machines entails regular testing of the machine's functionality and proper radiation output for safe and effective medical imaging.
Step-by-step explanation:
Inspections and calibration of x-ray machines involve regular testing of the machine's functionality rather than only visual inspections. Calibration includes ensuring that the machines produce the correct amount of radiation for medical imaging and are operating safely. It is important to maintain proper shielding and limit exposure to prevent the risk of irradiation to the patient and the operator. This kind of preventative maintenance is vital in medical settings to ensure the safety and effectiveness of x-ray diagnostics for viewing fractures and in dentistry.