Clinical Evaluation of the Treatment of Intellectual Metastases by Radiosurgery Gamma Knife by Means of a Support System by Mask.

Clinical Evaluation of the Treatment of Intellectual Metastases by Radiosurgery Gamma Knife by Means of a Support System by Mask.

the Mask fixation isn't a new solution for the immobilization of the patient's head and has been used in current practice for long years.

This trial is attempting to compare these two technical possibilities of head fixation by mask or by stereotaxic frame. The primary goal is to evaluate the comfort for the patient and specifically for each step of the procedure. It will also evaluate other parameters such as the effectiveness of these two strategies and tolerance.The expected benefit is an improvement of the comfort for the patients.

Inclusion Criteria:

• Subject bearing of one to five intellectual metastases of lung origin at the time of the indication of the radiosurgery
• Subject requiring a radiosurgical treatment with LGK

Exclusion Criteria:

• Subject having hurts of the brainstem or para-optics
• Pregnant women or in feeding period
• Subject having received previously a whole brain radiotherapy