Use of several different indicators to determine the position change of a radiation therapy target

摘要

The present invention is a method for determining data, referred to as target change data, that can be used to perform radiation therapy, the target change data comprising information about a change in position of a target contained in a patient's body. Described and said method includes a step executed by a computer to obtain decision rule data describing mapping rules for mapping an indicator change set to target change data, the indicator change set comprising one or more elements Each of the plurality of elements of the indicator change set indicates a respective change in the position of the plurality of indicators, and each of the at least two indicators is a change in the position of a plurality of different body structures called a marker structure This is a step for obtaining set data describing the obtained indicator change set. And determining the target change data based on the decision rule data and the set data by applying the mapping rules to the obtained indicator change set. And how to.