How is beam pitch defined?

Beam pitch is defined as the ratio of the table movement per rotation to the width of the beam. This measurement is crucial in computed tomography (CT) because it affects the quality and speed of the scan. A higher beam pitch indicates that the table moves further during each rotation, which can lead to faster scans. However, if the beam pitch is too high, it may result in gaps between adjacent slices or decreased image quality due to decreased tissue sampling.

Understanding the concept of beam pitch is essential for CT technologists, as it helps determine scan parameters that ensure optimal imaging while minimizing radiation exposure. As for the other choices, they either describe unrelated aspects of CT imaging such as the radiation dose per scan sequence, the distance between slices, or the frequency of radiation rather than the movement and width relationship specific to beam pitch.