Dose-optimised patient positioning for radiotherapy

摘要

The present invention relates to a method for positioning an arrangement of at least one beam position relative to a patient's body when the patient is placed for treatment by means of a treatment device which can emit treatment radiation, wherein the at least one beam position describes at least one position of at least one treatment beam, wherein the arrangement is referred to as the treatment arrangement and the treatment beam comprises the treatment radiation, wherein the method is executed by a computer and comprises the following steps:
providing treatment beam absorption data which describe the absorption properties of the at least part of the body with respect to absorbing the treatment radiation, and the relative position between the at least part of the body and the treatment arrangement;providing treatment beam data which describe radiation properties of the at least one treatment beam;providing condition data which describe a condition for treating the at least part of the body;determining an optimum relative position between the treatment arrangement and the at least part of the body on the basis of the condition data, the treatment beam data and the treatment beam absorption data.

主权项

1. A method for positioning a treatment arrangement of at least one beam position relative to a part of a body of an associated patient when the associated patient is placed for treatment by a treatment device which selectively emits treatment radiation, wherein the at least one beam position describes at least one position of at least one treatment beam, wherein the treatment beam comprises the treatment radiation, wherein the method is executed by a computer and comprises:
a) providing treatment beam absorption data which describe one or more absorption properties of the part of the body with respect to absorbing the treatment radiation, and the relative position between the part of the body and the treatment arrangement; b) providing treatment beam data which describe one or more radiation properties of the at least one treatment beam; c) providing condition data which describe a condition for treating the part of the body; d) determining an optimum relative position between the treatment arrangement and the part of the body based on the condition data, the treatment beam data, and the treatment beam absorption data; wherein the treatment beam absorption data are provided by determining the one or more absorption properties of the part of the body with respect to absorbing the treatment radiation based on a computed tomography (CT) image and by determining the relative position between the part of the body and the treatment arrangement based on a cone beam computed tomography (CBCT) image.