- 2018/04 - 現在 International University of Helth and Welfare School of Health Sciences at Fukuoka Dean, Professor
- 2016/04 - 2018/03 Kouhoukai Takagi Hospital Director
- 2011/09 - 2016/03 Ion Beam Therapy Center, SAGA HIMAT Foundation Director
- 1994/07 - 2011/08 Saga University, Medical School Radiology Professor snd Chairman
- 1985/04 - 1994/06 Saga Medical School Radiology Lecturer, Associate Professor
- 1986 - 1994 Saga Medical School, Associate Professor
- 1985 - 1986 Saga Medical School, Lecturer
- 1983/07 - 1985/03 Kyushu University Radiology assistant profrssor
- 1983 - 1985 Kyuushu University, Research Associate
- 1982/07 - 1983/06 Texas university MD Amderson Hospital Radiology Clinical Fellow
- 1982 - 1983 Texas University, Clinical fellow
- 1979/07 - 1982/06 Yale Univedrsity St.Raphaek Hospital Radiology Resident
- 1977/07 - 1979/06 Radisation Effects Research Faoundation Radiology Research Associate
- 1977 - 1979 Radiation Effects Research Foundation, Research Associate
- 1976/05 - 1977/06 Kyushuu University Hospital Radiology Intern
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American Roentgen Ray Society
, 日本肺癌学会
, 日本癌治療学会
, 日本医学放射線学会
, 北米放射線学会(Radiological Society of North America)
, JAPANESE SOCIETY OF NUCLEAR MEDICINE