Therapeutic apparatus, computer-implemented method, and computer program product for controlling the focus of radiation into a moving target zone

A computer-implemented method of operating a therapeutic apparatus, wherein the therapeutic apparatus comprises a therapeutic system for treating a target zone of a subject, wherein the therapeutic system has an adjustable focus for directing radiation into the target zone, wherein the therapeutic apparatus further comprises a respiration sensor for measuring a respiratory phase of the subject, wherein the method comprises the steps of:

• sending control signals to the therapeutic system that cause treatment of the target zone,
• receiving time-dependent-respiratory-phase-data from the respiration sensor,
• generating focus-adjustment-control-signals in accordance with the time-dependent-respiratory-phase-data, and
• sending the focus-adjustment-control-signals to the therapeutic system.

A computer program product comprising machine executable instructions for execution by a processor of a therapeutic apparatus, wherein the therapeutic apparatus comprises a therapeutic system for treating a target zone of a subject, wherein the therapeutic system has an adjustable focus for directing radiation into the target zone, wherein the apparatus further comprises a respiration sensor for measuring a respiratory phase of the subject, wherein execution of the instructions cause the processor to:

• send control signals to the therapeutic system that cause treatment of the target zone,
• receive time-dependent-respiratory-phase-data from the respiration sensor,
• generate focus-adjustment-control-signals in accordance with the time dependent respiratory data, and
• send the focus-adjustment-control-signals to the therapeutic system.