title: Stereotactic body radiotherapy for small lung tumors in the University of Tokyo Hospital.
abstract: Our work on stereotactic body radiation therapy (SBRT) for primary and metastatic lung tumors will be described. The eligibility criteria for SBRT, our previous SBRT method, the definition of target volume, heterogeneity correction, the position adjustment using four-dimensional cone-beam computed tomography (4D CBCT) immediately before SBRT, volumetric modulated arc therapy (VMAT) method for SBRT, verifying of tumor position within internal target volume (ITV) using in-treatment 4D-CBCT during VMAT-SBRT, shortening of treatment time using flattening-filter-free (FFF) techniques, delivery of 4D dose calculation for lung-VMAT patients using in-treatment CBCT and LINAC log data with agility multileaf collimator, and SBRT method for centrally located lung tumors in our institution will be shown. In our institution, these efforts have been made with the goal of raising the local control rate and decreasing adverse effects after SBRT.
authors.affiliation: Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
authors.forename: Hideomi
authors.identifier: 0000-0001-9394-9490
authors.initials: H
authors.lastname: Yamashita
authors.affiliation: Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
authors.forename: Wataru
authors.identifier: 0000-0002-4520-9006
authors.initials: W
authors.lastname: Takahashi
authors.affiliation: Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Haga
authors.affiliation: Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kida
authors.affiliation: Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
authors.forename: Naoya
authors.identifier: 0000-0001-8610-7842
authors.initials: N
authors.lastname: Saotome
authors.affiliation: Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Nakagawa
mesh_terms: D054893:Cone-Beam Computed Tomography; D004307:Dose-Response Relationship, Radiation; D006785:Hospitals, University; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007564:Japan; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000473:pathology* / Q000532:radiotherapy*; D019047:Phantoms, Imaging; D011312:Pressure; D016634:Radiosurgery; D011879:Radiotherapy Dosage; D050397:Radiotherapy, Intensity-Modulated
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