title: Narrow photon beam dosimetry for linear accelerator radiosurgery.
abstract: The dosimetric characteristics of linear accelerator radiosurgery for 10-MV X-ray were measured. Measurement of the relative output factor and tissue maximum ratio with a microchamber produced results equivalent to those of measurement with X-ray film. The 80% isodose level width measured with the microchamber was significantly smaller than that measured with the X-ray film. For the measurement of relative output factor and tissue maximum ratio, a microchamber seems to be the more appropriate choice. X-Ray film was found to be suitable for beam profile measurement.
authors.affiliation: Division of Radiological Technology, Nagasaki University School of Medicine, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Gotoh
authors.forename: M
authors.initials: M
authors.lastname: Ochi
authors.forename: N
authors.initials: N
authors.lastname: Hayashi
authors.forename: S
authors.initials: S
authors.lastname: Matsushima
authors.forename: T
authors.initials: T
authors.lastname: Uchida
authors.forename: S
authors.initials: S
authors.lastname: Obata
authors.forename: K
authors.initials: K
authors.lastname: Minami
authors.forename: K
authors.initials: K
authors.lastname: Hayashi
authors.forename: T
authors.initials: T
authors.lastname: Matsuo
authors.forename: M
authors.initials: M
authors.lastname: Iwanaga
authors.forename: A
authors.initials: A
authors.lastname: Yasunaga
authors.forename: S
authors.initials: S
authors.lastname: Shibata
mesh_terms: D019047:Phantoms, Imaging; D011829:Radiation Dosage; D016634:Radiosurgery / Q000295:instrumentation; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy