Prof. J.H. Amuasi joined the Ghana Atomic Energy Commission (GAEC) in December 1974.
After his professional training in Radiation Physics and Medical Physics at the Institute of Cancer Research, Royal Marsden Hospital, Sutton, Surrey, and at the Middlesex Hospital Medical School, University of London, UK, from 1976 to 1981, he returned to Ghana and worked as the Co-National Counterpart for the following International Atomic Energy Agency (IAEA) Technical Cooperation (TC) Projects:
- GHA/6/007 – (1982 – 1992) – Nuclear Medicine
- GHA/6/008 – (1991 – 1994) – Nuclear Medicine
- GHA/6/009 – (1994 –2003) – Radiotherapy/Nuclear Medicine
During the various phases of implementation of these projects, he attended various IAEA Training courses, workshops, seminars, symposia, conferences, and scientific visits, and worked with IAEA Technical Officers, Area Officers, and experts in Nuclear Medicine, Radiotherapy, and other fields.
He significantly contributed to the success of the IAEA assisted programmes for Ghana in Research Reactor Utilization, Gamma Irradiation Facility, Nuclear Medicine, Radiotherapy etc., with his organisational, managerial, technical knowledge and leadership skills. These programmes led to the establishments of Ghana Research Reactor-1 (GHARR-1) Centre, Radiation Technology Centre (RTC) both at GAEC in 1995, and the National Centre for Radiotherapy and Nuclear Medicine (NCRNM) at Korle Bu Teaching Hospital (KBTH), Accra in 1998 and Komfo Anokye Teaching Hospital (KATH), Kumasi in 2003.
Prof. Amuasi has also been serving as an IAEA Expert and Consultant in Nuclear Medicine since 1990 in Vienna and various African Countries including: Uganda (1990 and 1992), Tanzania (1991 and 2001), Tunisia (1992), Sierra Leone (1992), Senegal (1993 and 1995), Zambia (1993 and 1998), Vienna (2003 and 2013), Libya (2007).
He has also participated in IAEA Consultants meetings, Technical Working Group (TWG) Meetings and Task Force (TF) Meetings in Vienna, South Africa, Namibia, Pakistan, Madagascar, and served as rapporteur at several meetings.
Prof. Amuasi retired statutorily in 2006 after serving as Chief Executive (Secretary, Executive Secretary, Director-General) of the GAEC from 1993 to 2003, with the first year (1993) in an acting position. He was re-engaged on contract to serve as the 1st Dean / Director of the newly established Graduate School of Nuclear and Allied Sciences (SNAS) from 2006 to 2011. Prof. Amuasi was a full-time lecturer and supervisor of students’ theses (MPhil and PhD) as well as a mentor at the Medical Physics Department of the School from 2006 to 2016. Since 2016/2017 academic year, he has been playing the same role, but in his new capacity as a part-timer. He is also an internal/External Examiner of the University of Ghana as well as an External Examiner, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi.
Prof. Amuasi has been the President of the Ghana Society for Medical Physics (GSMP) from its inception in 2011 to Date.
Prof. Amuasi has also participated and contributed in many international conferences and symposia on various aspects of Medical Physics, Atomic Energy and related fields. He has over 50 publications to his credit. He wrote the History of GAEC. He has received awards including:
- Order of the Volta – Officer (2008) – Presidential Award “for contribution to Atomic Energy matters.”
- Meritorious Award (2013) – On the occasion of the 50th Anniversary Celebration of the Ghana Atomic Energy Commission – “For dedicated and selfless effort towards the advancement of Nuclear Knowledge and Applications in Ghana.”
- Meritorious Award (2015) – For serving effectively on the Governing Council of the Trinity Theological Seminary, Legon for several years.