title: Study of dose perturbation parameters for eye shielding in megavoltage photon beam therapy.
abstract: Shielding blocks are frequently used to minimize dose and shield sensitive organs in radiation therapy. The blocks, which are made of high atomic number materials, produce significant dose perturbations in megavoltage photon beams. The effects of these perturbations are studied with special interest in the eye shielding in the treatment of head and neck malignancies. Optimum parameters for the treatment are suggested.
authors.affiliation: Department of Radiation Oncology, University of Massachusetts Medical Center, Worcester 01655.
authors.forename: I J
authors.initials: IJ
authors.lastname: Das
authors.forename: K R
authors.initials: KR
authors.lastname: Kase
authors.forename: T J
authors.initials: TJ
authors.lastname: Fitzgerald
authors.forename: D A
authors.initials: DA
authors.lastname: Ligon
mesh_terms: D005131:Eye Injuries / Q000517:prevention & control*; D006258:Head and Neck Neoplasms / Q000532:radiotherapy; D006801:Humans; D008961:Models, Structural; D011832:Radiation Injuries / Q000517:prevention & control*; D011835:Radiation Protection / Q000295:instrumentation*; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy