title: Single-arc volumetric modulated arc therapy planning for left breast cancer and regional nodes.
abstract: We have successfully created a single arc volumetric modulated arc therapy (VMAT) plan for treating post-surgical left breast/chest wall and regional nodes using Elekta multileaf collimator (MLC). Dose volume histograms (DVHs) were compared between the VMAT plans and conventional tangential beam plans using a field-in-field technique, leading to significant DVH advantages in the VMAT plans. The difference between Elekta VMAT and Varian RapidArc due to different MLC designs was discussed in terms of the number of arcs required to cover a large target, highlighting a single arc capability of Elekta VMAT for a large target volume which may be less sensitive to unexpected organ motion during dose delivery.
authors.affiliation: Department of Radiology, University of Tokyo Hospital, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Sakumi
authors.forename: Kenshiro
authors.initials: K
authors.lastname: Shiraishi
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Onoe
authors.forename: Kentaro
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Akihiro
authors.initials: A
authors.lastname: Haga
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Yoda
authors.forename: Kuni
authors.initials: K
authors.lastname: Ohtomo
authors.forename: Keiichi
authors.initials: K
authors.lastname: Nakagawa
mesh_terms: D001943:Breast Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D003131:Combined Modality Therapy; D005260:Female; D006321:Heart / Q000528:radiation effects*; D006801:Humans; D008168:Lung / Q000528:radiation effects*; D015182:Lymphatic Irradiation / Q000379:methods*; D008207:Lymphatic Metastasis / Q000532:radiotherapy*; D008408:Mastectomy; D009929:Organ Size; D058958:Organs at Risk; D056888:Patient Positioning; D011832:Radiation Injuries / Q000517:prevention & control*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D018714:Radiotherapy, Adjuvant / Q000379:methods*; D035441:Thoracic Wall / Q000528:radiation effects