Dose distribution during stereotactic body radiotherapy using volumetric modulated arc therapy

2014 Fiscal Year Final Research Report

• Project/Area Number: 24601005
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: 医学物理学・放射線技術学
• Research Institution: The University of Tokyo
• Principal Investigator: IMAE Toshikazu 東京大学, 医学部附属病院, 診療放射線技師 (80420222)
• Co-Investigator(Renkei-kenkyūsha): NAKAGAWA Keiichi 東京大学, 医学部附属病院, 准教授 (80188896) ; YAMASHITA Hideomi 東京大学, 医学部附属病院, 講師 (70447407) ; HAGA Akihiro 東京大学, 医学部附属病院, 助教 (30448021) ; TAKENAKA Shigeharu 東京大学, 医学部附属病院, 診療放射線技師 (10623564)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 強度変調回転照射法 / 体幹部定位放射線治療 / 治療中 / 対象内構造 / 実線量分布

Outline of Final Research Achievements

Volumetric modulated arc therapy (VMAT) is capable of acquiring respiratory signals derived from projection images and machine parameters based on logs during VMAT delivery. The purpose of this study was to reconstruct the dose distribution during stereotactic body radiotherapy (SBRT) using VMAT. The present method successfully reconstructed the dose distribution using the respiratory signals and machine parameters acquired during treatment. This is a feasible method for verifying the actual dose distribution for a moving target.

Free Research Field

医学物理学・放射線技術学