Abstract: A method and apparatus to track non-linear internal target movement based on movement of an external marker.

Abstract: A robotic treatment delivery system including a linear accelerator (LINAC), and a robotic manipulator coupled to the LINAC. The robotic manipulator is configured to move the LINAC along seven or more degrees of freedom, at least one of the seven degrees of freedom being a redundant degree of freedom.

Abstract: An image guided treatment is performed to treat a target. To perform the image guided treatment, measurement data indicative of target motion is acquired. A timing of one or more x-ray images is determined based on the measurement data. Treatment may be performed on the target using the position of the target.

Abstract: A method and apparatus to develop an advanced correlation model of movement of a target within a patient, which needs less data points and can adapt to the changes of respiration behavior automatically.

Abstract: A method and apparatus to automatically control the timing of an image acquisition by an imaging system in developing a correlation model of movement of a target within a patient.

Abstract: A method and apparatus for tracking a target by tracking the location of an imaging device while the imaging device is tracking the target is described.

Abstract: A robotic treatment delivery system including a linear accelerator (LINAC), and a robotic arm coupled to the LINAC. The robotic arm is configured to move the LINAC along at least four rotational degrees of freedom and one substantially linear degree of freedom.

Abstract: An apparatus and method for determining optimized path traversal in a radiation delivery system is described. In one embodiment, determining an optimized path traversal in a radiation delivery system involves providing a plurality of spatial nodes used in a treatment plan, where each of the plurality of spatial nodes represents a position of a radiation source made available to the treatment plan for delivering radiation to a target, identifying a number of unused spatial nodes, from among the plurality of spatial nodes, at which radiation is not delivered according to the treatment plan, and skipping travel to one or more of the unused nodes by the radiation source when administering the treatment plan. Other embodiments are also described.

Abstract: An automatic collimator changer of a radiation treatment system.

Abstract: A method for preventing an emission head or arm assembly from entering an exclusion zone. The method may include calculating a variable dimension exclusion zone of a radiosurgery system, and preventing at least one of the emission head or arm assembly from entering the variable dimension exclusion zone. The method may also include establishing a exclusion zone of a radiosurgery system, the radiosurgery system comprising an x-ray source having an emission head, moving the emission head during treatment of a patient, wherein the exclusion zone travels with the emission head, and detecting a presence and location of an object in the traveling exclusion zone.

Abstract: A method for preventing an emission head or arm assembly from entering an exclusion zone or for preventing a collision between an object and the emission head and/or arm assembly. The method may include modeling a treatment room using a computer-aided design (CAD) tool, and calculating an exclusion zone for a radiosurgery system in the treatment room using the modeled treatment room.

Abstract: A method for preventing an emission head or arm assembly from entering an exclusion zone or for preventing a collision between an object and the emission head and/or arm assembly. The method may include modeling a treatment room using a computer-aided design (CAD) tool, and calculating an exclusion zone for a radiosurgery system in the treatment room using the modeled treatment room.

Abstract: A method for preventing an emission head or arm assembly from entering an exclusion zone. The method may include calculating a variable dimension exclusion zone of a radiosurgery system, and preventing at least one of the emission head or arm assembly from entering the variable dimension exclusion zone. The method may also include establishing a exclusion zone of a radiosurgery system, the radiosurgery system comprising an x-ray source having an emission head, moving the emission head during treatment of a patient, wherein the exclusion zone travels with the emission head, and detecting a presence and location of an object in the traveling exclusion zone.

Abstract: A method and apparatus to select a correlation model from a plurality of correlation models to track target movement based on movement of an external marker.

Abstract: A method and apparatus to track non-linear internal target movement based on movement of an external marker.

Abstract: The present invention provides a radiosurgery and/or radiotherapy x-ray system including a collision avoidance subsystem for detecting and avoiding obstacles during treatment. The system includes an x-ray source having an emission head at a distal end of an articulated arm assembly extending from a base unit, with the head being adapted for selectively emitting an x-ray beam along a beam axis, and including an associated controller for selectively orienting the head whereby the beam extends along a succession of treatment axes. The system further includes a collision avoidance subsystem including means for preventing the head and arm assembly from effecting a collision with an object in one or more pre-computed exclusion zones.