Development of 4D Monte Carlo dose calculation system for intensity modulated dynamic tumor-tracking radiotherapy

2014 Fiscal Year Final Research Report

• Project/Area Number: 25893110
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Radiation science
• Research Institution: Kyoto University
• Principal Investigator: ISHIHARA Yoshitomo 京都大学, 医学(系)研究科(研究院), 特定職員(医学物理) (60709351)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: モンテカルロ法 / 動体追尾照射 / 強度変調照射

Outline of Final Research Achievements

The purpose of this study was to develop a new 4D dose calculation system for intensity modulated dynamic tumor-tracking radiotherapy (IM-DTRT).
Dose calculation was performed using ten phase CT with the x-ray head rotated by the corresponding angle for pancreas IM-DTRT.
The mean dose differences between the IM-DTRT and the conventional plans for stomach and duodenum were approximately 40% and 20%. The dynamic tumor-tracking plan can reduce organs at risk dose with high dose prescription for the target.

Free Research Field

医学物理学