title: [Three-dimensional conformal radiotherapy for extracranial tumors using a stereotactic body frame]
abstract: This paper was reviewed to evaluate the feasibility of three-dimensional (3-D) conformal radiotherapy for extracranial tumors, especially for solitary lung tumors using a stereotactic body frame. To extend the technique of stereotactic irradiation for intracranial tumors, accurate body fixation and regulation of internal target motion are essential. In our study, a stereotactic body frame was used, and daily setup accuracy was verified. As a result, its setup accuracy was maintained within 0-8.5 mm (Ave=2.5mm). In our initial clinical experiences for thirty-two patients with 6-10 non-coplanar static beams, forty or 48 Gy was irradiated. During the follow-up of 4-27 (Average=11) months, twenty-nine (94%) tumors were locally controlled without any symptomatic complications. Recently, respiratory-gated irradiation systems, CT-linac systems, a real-time tumor tracking system, Cyber-knife, and C-arm linac were developed. With all these techniques, stereotactic irradiation for extracranial tumors are future direction of three-dimensional conformal radiotherapy.
authors.affiliation: Dept. of Therapeutic Radiology, Kyoto University, Graduate School of Medicine.
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Nagata
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Negoro
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Aoki
authors.forename: Takashi
authors.initials: T
authors.lastname: Mizowaki
authors.forename: Kenji
authors.initials: K
authors.lastname: Takayama
authors.forename: Masaki
authors.initials: M
authors.lastname: Kokubo
authors.forename: Norio
authors.initials: N
authors.lastname: Araki
authors.forename: Michihide
authors.initials: M
authors.lastname: Mitsumori
authors.forename: Sinsuke
authors.initials: S
authors.lastname: Yano
authors.forename: Yuko
authors.initials: Y
authors.lastname: Koga
authors.forename: Masahiro
authors.initials: M
authors.lastname: Hiraoka