Final answer:
The ideal source-to-skin distance for stationary fluoroscopic equipment is 45 cm, while for mobile fluoroscopic equipment, it is 30 cm.
Step-by-step explanation:
The optimum source-to-skin distance for stationary fluoroscopy equipment is 45 cm, and for mobile fluoroscopy equipment, it is 30 cm. This is to ensure that there is enough distance to reduce radiation exposure to the patient's skin while still providing sufficient image quality for the medical practitioner's needs. The source-to-skin distance is crucial for patient safety and image clarity during diagnostic procedures using fluoroscopy.