[Medical devices needed for stereotactic radiosurgery and intracranial stereotactic radiotherapy].

Since the previous special issue of Cancer Radiothérapie dedicated to radiosurgery in 1998, many important technological and computer developments have improved external beam radiotherapy treatment device performances. Whereas the Gamma Knife(®) was the gold standard for intracranial radiosurgery, new linear accelerator developments have led to new possibilities for the clinicians. This article describes quickly the different devices available for cranial radiosurgery or fractionated stereotactic radiotherapy.