A simple fixation and monitoring method for treating choroidal and orbital tumors using the CyberKnife^® system

METHODS

We adapted and simplified a technique in our clinic to treat
orbital tumor in two patients using the CyberKnife^® robotic
radiosurgery system. This system used computerized tomography
and magnetic resonance scanning during the treatment.
The system is based on the principle that the affected eye of
the patient watches a fixed point. During the treatment, lens
movement of the patient was monitored via a closed circuit
television camera from the control room.

RESULTS

We treated two patients with right eye orbital tumors using this
system. Treatment took 38 minutes per fraction. Both treatments
were finished successfully without any problem.

CONCLUSION

This simple fixation and monitoring system in the treatment of
choroidal and orbital tumors has shown that treatment is possible
without an invasive application.

Keywords: CyberKnife^® radiosurgery; orbital tumors; fixation and monitoring system