Which variable affects the amount of radiation reaching the receptor?

All of the choices listed—collimation, grid ratio, and filtration—play a significant role in determining the amount of radiation that reaches the receptor during imaging procedures.

Collimation refers to the technique of limiting the size of the X-ray beam to the area of interest. By reducing the field size, collimation minimizes unnecessary exposure to surrounding tissues and reduces the scatter radiation that can contribute to the exposure of the receptor. Thus, effective collimation helps optimize the amount of useful radiation that reaches the receptor.

Grid ratio pertains to the effectiveness of a grid used in radiographic imaging to absorb scatter radiation. A higher grid ratio indicates a greater ability to filter out scatter, allowing more primary radiation to pass through while reducing the amount of unwanted radiation reaching the receptor. This can enhance image quality and ensure that the receptor receives primarily the radiation that contributes to the diagnostic information.

Filtration involves the use of materials placed in the path of the X-ray beam to remove low-energy X-rays that do not contribute to the diagnostic image and are mostly absorbed by the patient's body, leading to unnecessary exposure. By filtering these low-energy X-rays, the amount of radiation that effectively reaches the receptor is enhanced, thereby improving image quality and patient safety.

Since each of these factors