Dose Volume Histogram (DVH) vs. Overlap Volume Histogram (OVH)

A shape relationship descriptor, the overlap volume histogram (OVH), quantifies the spatial configuration between an organ at risk (OAR) and a primary tumor volume (PTV), or target. Here, the OVH is used to compare the spatial configurations of the OARs and targets of a new patient with those of previous patients in the Oncospace database.