Patent ID: 7657302

Claim:
A control system for use in connection with a radiation delivery system having a radiation source that produces a radiation beam, a patient support, and a drive system that moves the patient support, the control system comprising: a wireless marker configured to be implanted in the patient at a site relative to a treatment target wherein the marker is energized or excited by an excitation source positioned exterior of the patient; sensors that obtains position information about the location and/or orientation of the marker; and a computer operatively coupled to the sensor, the computer having a computer operable medium containing instructions that cause the computer to (a) receive the position information from the sensors, (b) determine an actual location of the treatment target, (c) compute a displacement between the treatment target and a beam isocenter of the radiation beam, and (d) automatically control the radiation beam and/or move the patient support based on the computed displacement between the treatment target and the beam isocenter.