Stereotaxic radiotherapy technique for small intracranial lesions

Abstract

A stereotaxic radiotherapy technique that permits accurate delivery of highly localized dose to a small intracranial target has been developed. The technique facilitates precise integration of the diagnostic and therapeutic procedures including target localization, treatment planning, simulation, repetitive patient irradiation, and daily treatment verification. A conventional linear accelerator and computed tomography scanner as well as special diagnostic and therapeutic guides are used. A suitable dosimetric distribution is achieved using arc therapy with small radiation fields and 10-MV x rays.

Stereotactic Radiation Therapy of Intracranial Lesions Methodologic Aspects

“…(1 l), MAKOWSKI et coll. (22), and more fully by HOUDEK & FAYOS (12). Also single high dose stereotactic radiation techniques using the linear accelerator have been published by COLOMBO et coll.…”

Back to the future – radiotherapy in high grade gliomas

“…Small volume focal radiation was initially delivered with a dedicated 'gamma unit' containing over 200 focused cobalt-60 sources (for review see Leksell, 1987). More recently a number of centres have developed stereotactic external beam radiotherapy with multiple noncoplanar arcs of rotation or simultaneous gantry and couch movement ('dynamic radiotherapy') using a standard linear accelerator (Colombo et al, 1985;Hartmann et al, 1985;Houdek et al, 1985;Greitz et al, 1986;Podgorsak et al, 1988;Lutz et al, 1988). Single high-dose stereotactic irradiation (described as 'radiosurgery') has been used for the treatment of arterio-venous malformations, but the technique is also suitable for radiotherapy of brain tumours.…”

Stereotactic radiosurgery and the linear accelerator: accelerating electrons in neurosurgery

“…21 However, the system the authors described relied on the jaws of the treatment machine for beam collimation instead of the secondary collimation system described by Larsson and colleagues. 28 The Miami group's technique was regarded as fractionated, rather than single fraction.…”