A computer-implemented medical method for radiation treatment (rt) planning for treating multiple brain metastases of a patient

A program logic stored in a memory device of a computer that when running on the computer or when loaded onto the computer, causes the computer to perform a method comprising:

• acquiring a first arc setup comprising a plurality of arcs, each arc being defined by a combination of a patient table angle, a gantry start angle and a gantry stop angle,
• distributing a plurality of target volumes, which describe a brain metastases, to the arcs of the first arc setup thereby providing a packed first arc setup,
• comparing said first packed arc setup with one or more predefined arc setup constraints,
• wherein the one or more predefined arc setup constraints are selected from:
• the number of patient table angles per target volume, the number of passes, the sum of gantry span per metastasis over all arcs, the minimum table span, and the total number of patient table angles,
• and the method comprising the step of
• automatically suggesting at least a second arc setup based on a result of the comparison.

A medical system, comprising:

• a) at least one computer configured to perform a method including:
• acquiring a first arc setup comprising a plurality of arcs, each arc being defined by a combination of a patient table angle, a gantry start angle and a gantry stop angle,
• distributing a plurality of target volumes, which describe the brain metastases, to the arcs of the first arc setup thereby providing a packed first arc setup,
• comparing said first packed arc setup with one or more predefined arc setup constraints, and
• automatically suggesting at least a second arc setup based on a result of the comparison,
• wherein the one or more predefined arc setup constraints are selected from:
• the number of patient table angles per target volume, the number of passes, the sum of gantry span per metastasis over all arcs, the minimum table span, and the total number of patient table angles;
• b) at least one electronic data storage device storing at least patient data describing a multiple brain metastases of a patient;
• and
• c) a medical device for carrying out a medical procedure on the patient,
• wherein the at least one computer is operably coupled with:
• the at least one electronic data storage device for acquiring, from the at least one data storage device, the patient data describing the multiple brain metastases of the patient, and
• the medical device for issuing a control signal to the medical device for controlling the operation of the medical device on the basis of an arc setup.