According to the National Council on Radiation Protection and Measurements (NCRP), what is the recommended amount of total filtration?

The recommended amount of total filtration according to the National Council on Radiation Protection and Measurements (NCRP) is 2.5 mm of aluminum equivalent (Al equiv). This level of filtration is essential for reducing patient exposure to low-energy X-rays that do not contribute to the image quality but increase the dose of radiation delivered. By filtering out these low-energy photons, the overall quality of the X-ray beam is improved, which enhances image contrast while minimizing unnecessary radiation exposure to the patient.

Total filtration is a critical aspect in radiographic practice as it helps ensure that the primary beam is more effective and safer. This standard is often implemented for both diagnostic and therapeutic radiography to promote patient safety and enhance the effectiveness of imaging, aligning with the principles of radiation protection.