title: A rod matrix compensator for small-field intensity modulated radiation therapy: a preliminary phantom study.
abstract: A compensator made of a tungsten-based rod matrix has been proposed for small-field intensity modulated radiation therapy. The compensator was attached to a 6 MV linac gantry head. The proposed compensator could modulate the X-ray intensity with a step of 10% and a minimum transmission of 2.5%.
authors.affiliation: Department of Radiology, Faculty of Medicine, University of Tokyo Hospital, Tokyo 113-8655, Japan. nakagawa-rad@umin.ac.jp
authors.forename: Keiichi
authors.initials: K
authors.lastname: Nakagawa
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Yoda
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Masutani
authors.forename: Katsutake
authors.initials: K
authors.lastname: Sasaki
authors.forename: Kuni
authors.initials: K
authors.lastname: Ohtomo
mesh_terms: D003252:Construction Materials; D004867:Equipment Design; D005373:Film Dosimetry; D010315:Particle Accelerators; D019047:Phantoms, Imaging; D011879:Radiotherapy Dosage; D020266:Radiotherapy, Conformal / Q000295:instrumentation* / Q000379:methods; D014414:Tungsten / Q000737:chemistry; D014965:X-Rays
chemical_list: D014414:Tungsten