Monitor Unit Calculation for Passive Beam Delivery System in Proton Therapy

2017 Fiscal Year Final Research Report

• Project/Area Number: 26460739
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Medical Physics and Radiological Technology
• Research Institution: National Cancer Center Japan
• Principal Investigator: HOTTA KENJI 国立研究開発法人国立がん研究センター, 先端医療開発センター, 医学物理士 (60616134)
• Co-Investigator(Kenkyū-buntansha): 河野 良介 国立研究開発法人国立がん研究センター, 臨床開発センター, 研究員 (20392227) ; 馬場 大海 国立研究開発法人国立がん研究センター, 東病院, 医学物理士 (70763572)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 陽子線治療 / 放射線治療 / 線量シミュレーション / モニターユニット / 医学物理

Outline of Final Research Achievements

In proton therapy, the patient calibration factor is an important value for controlling the irradiation dose to the patient. We developed a patient calibration value calculation system for proton beam therapy and evaluated the accuracy for 1215 clinical conditions. As a result, in 1205 cases excluding 10 cases, the tolerance value within 3% of the error from actual measurement. The 10 cases not meeting the tolerance were small field size below 4 cm in diameter. We result that the calculation method has sufficient performance only in cases with a diameter of 4 cm or more.

Free Research Field

陽子線治療