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[Stereotactic radiosurgery with linear accelerator (LINAC). Report of the technical experience in 100 cases treated at the Mexico General Hospital].

UNLABELLED
Stereotactic radiosurgery consists of the release and high dose radiation inside the intracraneal, small, well defined and stereotactic localized injury.


OBJECTIVE
In this study we describe the technical aspects, clinical results and dose radiation levels used in 100 patients treated with LINAC.


METHODS
One hundred patients received treatment with LINAC stereotactic radiosurgery, 34 AVM, 22 meningiomas, 18 astrocytomas, 11 pituitary adenomas, 5 cavernous malformations, 3 acoustic neuromas, 3 craniopharyngiomas, 2 cases of epilepsy, one brain metastasis and one ependymoma. The radiation dose changed in each case. Studied variables: response of the injury, toxicity, in target dose, number of isocenters, number of treatment arcs, number o fcollimators, dose of risk organ, homogeneity of target, margin of error, target, diameter of collimator and location of target. We applied the chi2 test with statistical significance of p < 0.05.


RESULTS
The median follow-up was 17.7 months. We had 3 cases of minor toxicity. We confirmed that for a greater target volume, greater number of treatment arcs were necessary, with greater margins of errors and greater number of isocenters.


CONCLUSIONS
Radiosurgery is a safe and reliable technique to treat benign and malignant intracraneal lesions.