What is the quality factor (Q) for diagnostic x-rays used in CT?

The quality factor (Q) for diagnostic x-rays used in computed tomography (CT) is defined based on its use in radiation protection and the particular energy range typical of diagnostic imaging.

In the context of diagnostic x-rays, a Q value of 1 reflects the assumption that the biological effectiveness of x-rays is equivalent to that of a reference radiation, such as gamma rays, at similar energy levels. This indicates that the potential for biological damage caused by diagnostic x-rays is comparable to the reference level, allowing for standardized assessments of risk and exposure in radiation protection.

In areas like radiation safety and dosimetry, this standardization is vital because it helps formulate guidelines and protocols for safe practices in clinical settings. Thus, a quality factor of 1 is utilized to calculate doses and assess exposure risks effectively within the medical imaging field. The other options represent values that do not accurately reflect the established Q factor for x-rays in diagnostic contexts.