Prof Lee is a Nuclear Medicine Physician at the Department of Molecular Imaging and Therapy at Austin Health, Melbourne.

She is the Deputy Director and Director of Training, the PET Lead in Lymphoma Imaging and Theranostics Trials in the department. Her clinical and research interests lie in the novel tracers and applications of Molecular Imaging and Therapy in Oncological diseases, from phase 1 antibody trials through to participating in multicentre phase 3 clinical trials in this space.

Prof Lee is the Immediate Past President of the Australasian Association of Nuclear Medicine Specialists (AANMS), which is the representative body for education, training, advocacy and governmental relations of medical practitioners in nuclear medicine. She also chairs the AANMS Theranostics Committee, which also developed the first Guidelines in Theranostics Practice in Australasia. She is a member of the Committee for Joint College Training (CJCT) in Nuclear Medicine, AANMS Theranostics Course and Case Library Committee, and Australasian Training Site Accreditation Committee (TSAC). She has been a past Secretary-General of the World Federation of Nuclear Medicine and Biology (2014-2018).