Method for providing an irradiation plan, device for determining and device for applying the irradiation plan

A device for determining an irradiation plan for irradiation of a target volume, the device comprising:

• a first acquisition unit configured to acquire a time-resolved 3D image dataset, wherein the time-resolved 3D image dataset is time-resolved over at least one respiratory cycle of a patient, wherein the time-resolved 3D image dataset is based on time resolved computed tomography (CT) scans of an examination region of the patient and based on an imaging respiration profile, wherein the examination region includes the target volume, wherein the imaging respiration profile is based on a respiration-correlated first surrogate variable determined during the time-resolved CT scans;
• a second acquisition unit configured to measure a respiration-correlated second surrogate variable of the patient during execution of the irradiation plan, wherein the respiration-correlated second surrogate variable describes a respiration of the patient during irradiation;
• a first determination unit configured to determine an irradiation respiration profile based on the respiration-correlated second surrogate variable;
• a second determination unit configured to adjust the irradiation plan based on the time-resolved 3D image dataset and the irradiation respiration profile;
• and
• a provisioning unit configured to provide the irradiation plan for irradiation of the target volume.

A device for determining an irradiation plan for irradiation of a target volume, the device comprising:

• a memory storing computer-readable instructions;
• and
• at least one processor configured to execute the computer-readable instructions to cause the device to
• acquire a time-resolved 3D image dataset, wherein the time-resolved 3D image dataset is time-resolved over at least one respiratory cycle of a patient, wherein the time-resolved 3D image dataset is based on time-resolved computed tomography (CT) scans of an examination region of the patient and based on an imaging respiration profile, wherein the examination region includes the target volume, and wherein the imaging respiration profile is based on a respiration-correlated first surrogate variable determined during the time-resolved CT scans,
• measure a respiration-correlated second surrogate variable of the patient during execution of the irradiation plan, wherein the respiration-correlated second surrogate variable describes a respiration of the patient during irradiation,
• determine an irradiation respiration profile based on the respiration-correlated second surrogate variable,
• adjust the irradiation plan based on the time-resolved 3D image dataset and the irradiation respiration profile, and
• provide the irradiation plan for irradiation of the target volume.