title: [Stereotactic irradiation using a linear accelerator with helmet-type shell].
abstract: A new method is proposed for external stereotactic and three-dimensional irradiation for a small target in the skull. In this method, we use a special long tube collimator, helmet-type shell (guiding rods are attached to the shell using the CT-stereotactic apparatus) and 10 MV linear accelerator. The patient's head is fixed conservatively by the helmet-type shell. In the phantom experiment, the 90% isodose area was 10 mm in diameter, and the error between the geometrical center of the target and the irradiated center was 2 mm.
authors.affiliation: Department of Radiology, Nagoya University, School of Medicine.
authors.forename: Y
authors.initials: Y
authors.lastname: Horikawa
authors.forename: T
authors.initials: T
authors.lastname: Ishigaki
authors.forename: S
authors.initials: S
authors.lastname: Sakuma
mesh_terms: D001932:Brain Neoplasms / Q000601:surgery*; D006801:Humans; D008961:Models, Structural; D016634:Radiosurgery / Q000295:instrumentation*