Method and apparatus for the treatment of lesions by high-energy radiation.

摘要

The process for the treatment of cerebral lesions consists in controlling the irradiation dose by focusing divergent, a settling and convergent focussing of an annular beam of the gamma radiation. The control of the beam makes it possible to irradiation by volume of a target of a given size. & br / the apparatus carries - source (4), - collimator (5) receives, in at least one channel (11), an absorbent element having a diverging profile -.