Radiation therapy treatment plan improvement through use of knowledge base

摘要

A radiation therapy dose distribution method starts with selecting a treatment type. Then an organ at risk (OAR) distance to target map is determined. The OAR distance to target map comprises distances to a target organ for portions of an OAR. The OAR distances are determined from at least one segmented patient organ image. A cohort average dose distance to target histogram is selected. A dose value to the portions of the OAR are assigned to form a first 3D dose distribution map. The dose values are from the selected cohort average dose distance to target histogram. A second 3D dose distribution map is determined based on a field arrangement determined by the treatment type and the first 3D dose distribution map. A dose distance to target histogram is calculated using the second 3D dose distribution map and the distance to target map.

主权项

1. A method for determining a radiation therapy dose distribution, comprising:
selecting and downloading a treatment type for a patient from a database; determining an organ at risk (OAR) distance to target map, wherein the OAR distance to target map comprises distances to a target organ for respective portions of at least one OAR, and wherein the OAR distances are determined from at least one segmented patient organ image; selecting and downloading a cohort average dose distance to target histogram from the database; assigning a dose value to each of the portions of the at least one OAR to form a first 3D dose distribution map, wherein the assigned dose values are from the selected cohort average dose distance to target histogram; determining a second 3D dose distribution map based on a field arrangement determined by the selected treatment type and the first 3D dose distribution map; and calculating a dose distance to target histogram for the patient using the second 3D dose distribution map and the distance to target map.