A<unk>  <unk>  is a<unk>  relating radiation<unk>  to tissue<unk>  in radiation therapy planning.<unk> s are most commonly used as a plan evaluation tool and to compare<unk> s from different plans or to structures.<unk> s were introduced by Michael Goitein (who introduced radiation therapy concepts such as the "beam's-eye-view," "digitally reconstructed radiograph," and uncertainty/error in planning and positioning, among others) and Verhey in 1979.<unk>  summarizes 3D<unk>  distributions in a graphical 2D format. In modern radiation therapy, 3D<unk>  distributions are typically created in a computerized treatment planning system (TPS) based on a 3D reconstruction of a CT scan. The<unk> " referred to in<unk>  analysis is a target of radiation treatment, a healthy organ nearby a target, or an arbitrary structure.
Dose-volume histogram
Mutational signatures
Dose profile
Lung allocation score
Time-activity curve
Microstaging
Toxicity class
Seroprevalence