2015.11.19～11.21：JASTRO 28 Annual meeting

News 2015年11月19日

The 28th Annual Meeting of the Japanese Society for Radiation Oncology (JASTRO) held in Maebashi, Gunma. Mr. Ito (Assistant), Mr. Saito (M2), Mr. Nakajima (M2), Mr. Miyasaka (M1), Mr. Takayama (M1) have attended it for oral presentation. Dr. Kadoya (Assistant profess.), Mr. Abe (D3) and Mr. Arai (D2) have attended it for poster presentation.

■Date：　2015.11.19～11.21
■Venue：　Maebashi, Gunma, Japan
■Conference name：JASTRO 28 Annual meeting

Masahide Saito (M2)

　I joined the 28th Annual Meeting of the Japanese Society for Radiation Oncology (JASTRO) held in Maebashi, Gunma Nov. 19 – Nov. 21, 2015. In this meeting, our medical physics group had eight participants for the oral or poster presentation. Gunma Prefecture of Japan is famous for the Tomioka Silk Mill which registered as a World Heritage Site in 2014, and the special lecture related to Tomioka Silk Mill seems to have been held during the meeting.

　JASTRO is the largest society for radiation oncology in japan. The main theme of this 28Th meeting was “Comprehensive Radiation Oncology in High-Precision Radiotherapy Era”, and many of the sessions and discussions had been waged. Personally, a presentation of automation of treatment planning check was very interesting. I think that the word “Automation” will be a keyword in this scientific region. At the luncheon seminar, the presentation on the use experience of some DIR software was held by Medical Doctor. This lecture was different from the point of view of medical physicist, so its view was very useful for me to use or validate DIR algorithms.

　Then in this meeting, I had oral presentation with title of “Predictive power of machine log file-based patient specific QA for prostate VMAT: Correlation between measurement and log file-based dose reconstruction”. This QA method provides several advantages that a series of procedure in patient-specific QA can be performed with “device-free”. In this study, we evaluated the accuracy of this QA procedure which uses Varian Dynamic log (“Dynalog”) file-based dose reconstruction method (DBDR), comparing the ArcCHECK and chamber measurement. Our results demonstrated that a DBDR method may be a useful tool for VMAT patient specific QA. Our group will continue the research of patient-specific QA using log-files.