What is the minimum distance required between the x-ray source and the x-ray tabletop according to NCRP Report No. 102?

The minimum distance required between the x-ray source and the x-ray tabletop, as outlined in NCRP Report No. 102, is indeed 15 inches. This distance is established to ensure adequate protection for both patients and healthcare personnel by minimizing unnecessary radiation exposure. Maintaining this distance is critical for effective shielding and to achieve optimal imaging quality while adhering to safety standards. The guidelines set forth by the National Council on Radiation Protection and Measurements (NCRP) emphasize proper positioning to enhance the safety protocols in radiology practices.