Radiosurgery of cerebral arteriovenous malformations: target definition strategy

Background and purpose. Description and critical review of our procedure of definition of the target of irradiation of a cerebral arteriovenous malfor mations. Patients and method: Fixation of the stereotactic fame, performing of stere otactic angiography and CT scanner were described, and the target including nidus and venous collectors of the a cerebral arteriovenous malformations defined. Conclusion. The use of several three-dimensional imaging techniques can imp rove and simplify the method of delineating target with a reduction of radi o-induced complications.