Thomas, Evan M In reply: volumetric arc therapy (RapidArc) vs Gamma Knife radiosurgery for multiple brain metastases. [electronic resource] - Neurosurgery Mar 2015 - E353-4 p. digital Publication Type: Letter; Comment ISSN: 1524-4040 Standard No.: 10.1227/NEU.0000000000000662 doi Subjects--Topical Terms: Brain Neoplasms--radiotherapyHumansRadiosurgeryRadiotherapy Planning, Computer-Assisted--methodsRadiotherapy, Intensity-Modulated