The SSD in stationary fluoroscopy must be at least what distance?

• A. 25 cm (10 in)
• B. 38 cm (15 in)
• C. 50 cm (20 in)
• D. 70 cm (28 in)

Answer: (B)

In stationary fluoroscopy, the minimum source-to-skin distance (SSD) is essential for ensuring patient safety and minimizing radiation exposure. The correct answer indicates that the SSD must be at least 38 cm (15 inches). This distance is specified in radiological guidelines and standards to help reduce the intensity of radiation that reaches the patient, thereby lowering the risk of radiation burns and long-term effects.

Maintaining an SSD of at least 38 cm is critical because it creates a buffer that disperses the radiation exposure over a larger area, thus minimizing the dose to the skin. This distance is established based on research and regulation which aim to protect patients during fluoroscopic procedures. Adhering to these standards is a fundamental aspect of safe radiographic practice.

Knowing the minimum SSD is crucial for radiographers, as it directly impacts patient safety and the quality of the imaging procedure.