Multisession stereotactic radiosurgery for large vestibular schwannomas.

Object: Microsurgery is not the only option for larger vestibular schwannomas (VSs); recent reviews have confirmed the feasibility and efficacy of radiosurgery for larger VSs. This study illustrates the outcomes of a series of large VSs after multisession stereotactic radiosurgery (SRS).

Methods: A series of 33 VSs larger than 8 cm(3) (range 8-24 cm(3), mean 11 cm(3), median 9.

Early results of CyberKnife radiosurgery for arteriovenous malformations.

Object: The authors describe a method that utilizes an image-guided robotic radiosurgical apparatus (the CyberKnife) for treatment of cerebral arteriovenous malformations (AVMs). This procedure required the development of an original technique that allows a high degree of automation.

Methods: Angiographic images were imported into the treatment planning software by coregistering CT and 3D rotational angiography.

Cyberknife radiosurgery for benign meningiomas: short-term results in 199 patients.

Objective: To present initial, short-term results obtained with an image-guided radiosurgery apparatus (CyberKnife; Accuray, Inc., Sunnyvale, CA) in a series of 199 benign intracranial meningiomas.

Methods: Selection criteria included lesions unsuitable for surgery and/or remnants after partial surgical removal.

Three-dimensional angiography for radiosurgical treatment planning for arteriovenous malformations.

Object: Radiosurgical treatment of a cerebral arteriovenous malformation (AVM) requires the precise definition of the nidus of the lesion in stereotactic space. This cannot be accomplished using simple stereotactic angiography. but requires a combination of stereotactic biplanar angiographic images and stereotactic contrast-enhanced computerized tomography (CT) scans.