First Black South African Woman in Nuclear Medicine PhD Advancing Cancer Care in Africa
Keamogetswe Ramonaheng is driving major progress in medical physics across Africa. She is the first Black South African woman to earn a PhD in nuclear medicine. Today, she leads advanced cancer research and treatment work.
She serves as head of medical physics and radiobiology at the Nuclear Medicine Research Infrastructure in Pretoria. This is Africa’s first dedicated nuclear medicine research facility. The center focuses on improving cancer diagnosis and treatment using radiation science.
Her work connects research directly to patient care. It also strengthens how African countries use modern medical technology. This makes her a key figure in health innovation on the continent.
Journey of Keamogetswe Ramonaheng in Medical Physics Education and Training
Ramonaheng’s journey began at the University of the Free State. She studied physics because she wanted to understand how nature works. She later completed her honours and advanced training in the same field.
Her early hospital internship showed her the real power of physics in medicine. She saw how radiation science could help treat cancer patients. This experience shaped her career path in nuclear medicine.
She later received international training support from the International Atomic Energy Agency. This opportunity allowed her to gain clinical experience in Australia. It also strengthened her research and medical expertise.
Leadership at Africa’s Nuclear Medicine Research Facility in Pretoria
In 2024, Ramonaheng joined the Nuclear Medicine Research Infrastructure in Pretoria. The facility is a partnership between top institutions in South Africa. It is designed to advance nuclear medicine research across Africa.
She leads teams working on radiation safety, imaging systems, and cancer therapies. Her role combines clinical work, research, and training young scientists. She also ensures that all procedures follow strict safety standards.
“We integrate research with operations,” she explained. She added that safety must never be compromised. Her leadership ensures innovation and responsibility work together.
Advancing Cancer Treatment Through Theranostics and Precision Medicine
Ramonaheng focuses strongly on theranostics. This approach combines diagnosis and treatment in one system. It allows doctors to locate and treat cancer more precisely.
She works on advanced imaging methods like PET and SPECT scans. These tools help doctors see tumours clearly inside the body. She also studies how targeted radiation can destroy cancer cells safely.
Her work includes developing new radionuclide therapies. These therapies deliver treatment directly to cancer cells. This improves accuracy and reduces harm to healthy tissue.
Challenges, Innovation, and Future of Medical Physics in Africa
Her work is highly demanding and interdisciplinary. She collaborates with doctors, nurses, and scientists daily. She also manages complex systems and research projects.
However, challenges remain. Funding for training is limited. Skilled medical physicists are also difficult to find in the region. Despite this, she continues to push forward.
Looking ahead, she believes artificial intelligence will improve medical physics. She also aims to grow Africa’s scientific talent through mentorship. Her goal is to strengthen healthcare systems across the continent.
She believes leadership is about creating new opportunities for others. “Leadership is not only about the creation of paths,” she said, “but the creation of paths where there were no paths previously.”





