JaLCDOI 10.18926/AMO/56868
フルテキストURL 73_3_247.pdf
著者 Yoshio, Kotaro| Wakita, Akihisa| Mitsuhashi, Toshiharu| Kitayama, Takahiro| Hisazumi, Kento| Inoue, Daisaku| Tajiri, Nobuhisa| Shiode, Tsuyoki| Akaki, Shiro| Kanazawa, Susumu|
抄録 We investigated the feasibility of simultaneous integrated boost (SIB) volumetric modulated arc therapy (VMAT) using elective nodal irradiation (ENI) for middle or lower esophageal cancer and compared it with three-dimensional conformal radiotherapy (3D-CRT). The study included 15 patients. The prescribed doses included a standard dose (50.4 Gy) and a high dose (60 Gy) for the planning target volume (PTV) of the involved lesions. The objective of the whole lung volume receiving ≥ 20 Gy (V20Gy) was < 30%, and the mean lung dose (MLD) was < 20 Gy. The volumes of the lung receiving 5 Gy (V5Gy) and the heart receiving 30-50 Gy (V30-50Gy) were kept as low as reasonably achievable. As a result, SIB-VMAT showed superior dose conformity for the PTV (p<0.001). Although the lung V5Gy was significantly increased (p<0.001), the V20Gy and MLD showed no significant increase. The heart V30-50Gy showed a > 20% reduction in the mean against 3D-CRTs. Our results demonstrate the feasibility of SIB-VMAT for the treatment of middle or lower esophageal cancer with ENI. Although attention should be paid to the low-dose area of the lungs, SIB-VMAT would be a promising treatment option with improved outcomes for esophageal cancer.
キーワード esophageal cancer middle and lower thoracic volumetric modulated arc therapy, 3D-CRT elective nodal irradiation
Amo Type Original Article
発行日 2019-06
出版物タイトル Acta Medica Okayama
73巻
3号
出版者 Okayama University Medical School
開始ページ 247
終了ページ 257
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2019 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 31235973