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Charged particle radiosurgery of the pituitary gland. (A) Late follow-up effects 18 years after treatment showing serum levels of human growth factor as evidence of tumor eradication. (B). Photograph of patient treatment set-up for helium-ion radiosurgery. Republished with permission of Karger Publisher, Basel, Switzerland from Levy, et al.,Copyright©19914; permission conveyed through Copyright Clearance Center, Inc.
