Patent ID: 9700737
Date: 2017-07-11
CPC Classifications: A61N

Claim:
1. A brachytherapy apparatus for applying a brachytherapy to a living object, the brachytherapy apparatus comprising: a radiation source emitting radiation, a placing unit for being inserted into the living object and for placing the radiation source close to a target region of the living object for directing the emitted radiation to the target region, wherein the living object swells when the placing unit is inserted into the living object, an imaging unit for generating images of the living object over time, a spatial parameter determination unit for determining a spatial parameter of the living object, which changes over time with the swelling of the living object, from the generated images of the living object, a treatment time window determination unit for determining a treatment time window, in which a change of the spatial parameter of the living object is minimal, a planning unit for determining a placing plan defining placing positions within the living object at which the radiation source is to be placed and placing times defining when and how long the radiation source is to be placed at the respective placing position based on the generated images and the determined treatment time window, wherein the planning unit is adapted to determine the placing plan such that the placing times are within the treatment time window.