What is the primary goal of using filtration in radiographic procedures?

The primary goal of using filtration in radiographic procedures is to decrease patient dose. Filtration involves the placement of materials that selectively absorb lower-energy x-rays from the radiation beam. These lower-energy photons contribute to dose but do not enhance image quality, as they are more likely to be absorbed by the patient's body rather than penetrate it effectively. By removing these low-energy photons, filtration helps ensure that the x-ray beam consists predominantly of higher-energy photons that are more likely to produce a useful image while minimizing the amount of radiation exposure to the patient. This is critical for patient safety and forms an essential part of the principle of ALARA (As Low As Reasonably Achievable) in radiation protection.