1988	The Wesley Radiation Oncology Pty Ltd commences trading at The Wesley Hospital, Auchenflower. The business is known as the “Wesley Cancer Care Centre”. The Wesley Cancer Care Centre is the first private Radiation Therapy centre in Queensland.
1989	Low dose rate brachytherapy is undertaken at the Wesley Cancer Care Centre. The first Australian meeting for brachytherapy is held at The Wesley Cancer Care Centre. This latter develops into the Australian Brachytherapy Group.
1991	High Dose Rate Brachytherapy is undertaken at the Wesley Cancer Care Centre.
1995	The Wesley Radiation Oncology Pty Ltd opens a second Radiation Therapy centre at John Flynn Private Hospital at Tugun on the Gold Coast. This business is known as “East Coast Cancer Centre (Gold Coast)”.
1997	Stereotactic Radiosurgery is undertaken at the Wesley Cancer Care Centre.
2001	The Wesley Radiation Oncology Pty Ltd opens a third Radiation Therapy centre at Nambour on the Sunshine Coast. This business is known as “East Coast Cancer Centre (Sunshine Coast)”.
2005	A block of land is purchased at Southport with a view to developing a Radiation Therapy centre at the northern end of the Gold Coast.
2006	A contract is entered into with a developer to construct a Radiation Therapy centre at Chermside.
2007	BrainLAB equipment (used for Stereotactic radiosurgery) is installed at the Wesley Cancer Care Centre, first such installation in Australia. High Dose Rate Brachytherapy undertaken at East Coast Cancer Centre (Gold Coast). The Wesley Radiation Oncology Pty Ltd adopts a new name “Premion” replacing “Wesley Cancer Care Centre” and “East Coast Cancer Centre”.
2008	Premion (Chermside) and Premion (Southport) commence trading.