Abstract
The 4th JASTRO Future Planning Seminar was held in Tokyo on March 8, 2008. In the meeting, the approved plans for the Professional Training Plan for Cancer by the Ministry of Education, Culture, Sports, Science, and Technology, Japan, were introduced and discussed. Questionnaires on the contents of each plan, such as numbers/positions of students/ instructors, difficulty, problems, and opinions, were introduced and widely assessed. From the investigation, the small number of instructors who are medical physicists was identified as the most important problem for the future in the field of radiation oncology in Japan.