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VOLUME 3 , ISSUE 1 ( January-April, 2011 ) > List of Articles


Gamma Knife Radiosurgery for Vestibular Schwannomas

Roman Liscak

Keywords : Vestibular schwannoma,Radiosurgery,Gamma knife,Results,Complications

Citation Information : Liscak R. Gamma Knife Radiosurgery for Vestibular Schwannomas. Int J Otorhinolaryngol Clin 2011; 3 (1):57-64.

DOI: 10.5005/jp-journals-10003-1054

Published Online: 01-08-2011

Copyright Statement:  Copyright © 2011; The Author(s).


The current gamma knife radiosurgery technique involves the use of magnetic resonance imaging for targeting, the application of a low marginal dose (usually between 12 and 13 Gy) and highly conformal treatment planning using multiple small isocenters. This technique achieves an average tumor control rate of 95% and open surgery is needed in fewer than 2 to 3% of patients treated by gamma knife. Facial nerve function preservation is achieved in up to 99% of cases and chance of preserving serviceable hearing is usually between a 70 to 80%. The introduction of ventriculoperitoneal drainage after radiosurgery is required for 1 to 8% of patients. Gamma knife radiosurgery can be treatment of choice for the patients, where the diameter of the tumor is less than 3 cm.

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