全方位珈瑪雷射刀

全方位珈瑪雷射刀,“ The delivery of a single, high dose of irradiation to a small and critically located intracranial volume through the intact skull ”.,L. LEKSELL,DEFINITION OF RADIOSURGERY.,1949 :Lars,Leksell,Radiosurgery,.,Neurosurgical procedure where narrow ionizing beams,given,in a single,high,dose fraction, are,used either,to destroy a,predetermined target,volume or to,induce,a,desired biological effect,in,the target,volume,without opening the skull and with,a minimum,risk,of damage to,the surrounding,non,target,neural tissue,(,Steiner,1992).,Adler 2004,Development of image-guided frameless technology,that eliminates the necessity,to perform radiosurgery,in a single session.,Radiosurgery is a procedure that involves the active,participation of a surgeon,and in which spatially accurate,and highly conformal dose of radiation are targeted,at well-defined structures with an ablative intent.,Pollock & Lunsford 2004,Single session, precise delivery of a,therapeutically effective radiation dose,To an imaging defined target.,Adherence to accepted, descriptive terms in,defining stereotactic radiosurgery and radiation therapy,Permits a clear distinction among the results of,the different radiation delivery techniques for,The patients, physicians, and other interested parties,Leksells historical definition 1951,Steiner definition 1987,Adler definition 2004,Pollock definition 2004,Barnett definition 2007,Summary,Huge conflict of interest,Sattelite issues + 2 main,Is it still radiosurgery if,1 Frameless,2Fractionated,Leksell Gamma Knife PerfeXion,A technology driven definition ?,