Three-dimensional angiography for radiosurgical treatment planning for arteriovenous malformations

• DOI: 10.3171/jns.2003.98.3.0536
• Publication Date: 2009-05-13T17:54:51Z
• Authors: Federico Colombo; Carlo Cavedon; Paolo Francescon; Leopoldo Casentini; Umberto Fornezza; Lucio Castellan; Francesco Causin; Stefano Perini
• Keywords: Arteriovenous malformation; Rotational angiography

Object. Radiosurgical treatment of a cerebral arteriovenous malformation (AVM) requires the precise definition nidus lesion in stereotactic space. This cannot be accomplished using simple angiography, but combination biplanar angiographic images and contrast-enhanced computerized tomography (CT) scans. In present study authors describe method which three-dimensional (3D) rotational angiography is integrated into space to aid planning for radiosurgery. Methods. Twenty patients harboring AVMs underwent prior linear accelerator Planning involved acquisition two different data sets, one was obtained standard (a with CT scanning), other, procured new technique (nonstereotactic 3D combined scanning by procedure image fusion). The plan that developed compared one. For each patient number isocenters dimension selected collimators were same, based on information supplied both methods. Target coordinates modified only five cases limited amount (mean 0.7 mm, range 0.3–1 mm). Conclusions. imaging modality offers an easier more immediate interpretation data, while maintaining same accuracy target as provided technique. Moreover, has advantage nonstereotactic can performed at site time respect irradiation procedure.