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15 September 2022 | Story André Damons | Photo André Damons
Dr Osayande Evbuomwan, Prof Willy Vangu and Dr Gerrit Engelbrecht
Dr Osayande Evbuomwan, nuclear medicine specialist and Senior Lecturer, left, and Dr Gerrit Engelbrecht, Clinical Head of the Department of Nuclear Medicine at the UFS, right, with Prof Willy Vangu, Chief Specialist and Head of Nuclear Medicine at the University of the Witwatersrand, after his lecture.

There is no doubt that an institution like the University of the Free State (UFS), with its calibre and pedigree, needs a PET/CT machine (medical-imaging device that simultaneously and clearly reveals both anatomical details and metabolic processes within the body), particular in oncology, in improving the management of patients. 

This is according to Prof Willy Vangu, Chief Specialist and Head of Nuclear Medicine at the University of the Witwatersrand, who was a guest lecturer on 8 September 2022 at the Department of Nuclear Medicine at the UFS.

Positron emission tomography (PET) is a type of nuclear medicine imaging modality that measures the metabolic activity of the cells of body tissues. PET imaging is useful in the evaluation of patients with neurological, cardiac, infection, inflammation, and most importantly oncological conditions. Through its ability to detect metabolic changes very early, it can detect disease conditions that might not be easily detected on other forms of anatomical imaging.

Role of PET/CT in different clinical scenarios

In his lecture, Prof Vangu talked about the role of PET/CT in different clinical scenarios. By giving practical examples, he explained the role of PET/CT in different aspects of clinical medicine, including brain imaging for dementia, movement disorder and cerebrovascular reserve. 

“Looking at dementia, we will focus on one of diseases that is today becoming a major source of health concern, Alzheimer's disease. The latest Alzheimer's report that was published in 2018 stated that there are 50 million individuals currently suffering from Alzheimer's. They forecast that in 30 years we are going to have more than 150 million people suffering from this disease. PET/CT imaging can identify very early the typical patterns associated with all the different types of dementias, including Alzheimer's disease…”

For cardiac application, Prof Vangu said there are so many indications for PET/CT in cardiac imaging. One of the most important is the assessment of myocardial viability, in patients who have suffered from cardiomyopathy due to ischemic heart disease. PET/CT offers a noninvasive method of identifying viable myocardium that would benefit from revascularisation, with a very high diagnostic accuracy. 

Prof Vangu, who is also the head of nuclear medicine at the Charlotte Maxeke Johannesburg Academic and Chris Hani Baragwanath hospitals as well as head of the department for radiation sciences at the University of the Witwatersrand, said PET has been around for many years and is not something new. However, in clinical practice, PET imaging became significant with a breakthrough that occurred with the production of the glucose analogue tracer, 18F-fluorodeoxyglucose (FDG). This tracer in PET/CT imaging has revolutionised the management of cancer patients for the oncologist. It offers the ability of more accurate cancer staging, assessment of treatment response, assessment of disease recurrence and in some situations, surveillance. It has the ability to predict early which cancer patients will benefit from a particular drug, thereby giving the oncologist an idea on either to de-escalate treatment or change to a second line regimen very early on in the management. 

PET-CT scan imaging machine

An internet example of an image taken by a PET/CT machine. Photo for illustration: A PET/CT Imaging machine.


PET/CT came onto the market only in the year 2001, when it was launched for the first time by David Townsend (a physicist) and Ronald Nutt (electrical engineer). As at today, almost every institution in the country has at least one PET/CT machine.


“Looking at clinical applications, which is really the crux of the lecture today, there are so many clinical applications to talk about. You need a full week of a PET/CT symposium to go through all of them (and) maybe that might not even be enough. We can at least from this talk have an idea on how PET/CT can be applied in clinical medicine,” said Prof Vangu.

No other road for the university but to get a PET/CT machine

He also showed the impact and results that PET/CT imaging had in the management of infection and inflammation including TB. He said the role of PET/CT in TB is for monitoring of treatment, identification of extrapulmonary TB and prognosis. 

In concluding his lecture, he said there is no other road for the university but to get a PET/CT machine. “There is no argument about it. The institution needs it to improve the management of patients, especially the oncology and cardiology patients. Confidently making the decision on which patients to treat, how to treat them, identifying and evaluating their true response to therapy requires a PET/CT machine.

“I am happy to hear that the policy- and decisions-makers in the province and the university are looking forward to having a PET/CT machine,” he said later. 

Dr Osayande Evbuomwan, nuclear medicine specialist and Senior Lecturer, and Dr Gerrit Engelbrecht, Clinical Head of the Department of Nuclear Medicine at the UFS, are both looking forward of having a PET/CT in the department because in addition to its use in clinical setting, it has a huge role to play in research and training postgraduate students, as PET/CT imaging makes up a huge chunk of the postgraduate training curriculum

News Archive

Doll parent project exposes learners to real-life issues of responsible reproductive health
2016-11-01

Description: Doll parent project  Tags: Doll parent project

Princess Gaboilelwe Motshabi,
Princess Gabo Foundation, Maki Lesia,
School of Nursing, Zenzele Mdletshe,
Internationalisation office, Masters of
Education students from Rutgers University
and study leader.


With the alarming rate of teenage pregnancies in secondary schools, a concerned teacher approached University of the Free State (UFS) School of Nursing in 2013, and in 2015, the Reproductive Health Education Project (RRHEP) was established in collaboration with fourth-year Midwifery students, the Princess Gabo Foundation and the UFS Community Engagement Directorate.

Empowering learners to make responsible reproductive health choices was the primary objective, which got final-year nursing students involved in the Doll-Parenting Project as part of their Service Learning Module. To simulate parenting, boys and girls in Grade Eight were given dolls to take care of as their “baby” for a given period of time. After an information session with parents and guardians, the project took off at Moroka High School in Thaba Nchu and Lekhulong High School in Mangaung. The Princess Gabo Foundation, an NGO operating in the Thaba Nchu community, which supports maternal health programmes, provided the dolls, kangaroo wraps, and diaries in which learners recorded their daily experiences of caring for a baby.

Teen parenting – a challenging experience

Learners were required to calculate how much it would cost to care for a baby, the cost of buying nappies, formula milk (if not breast feeding), doctor’s visits, and medicine. The project was supported by teachers in various subject classes, and learners were encouraged to express themselves through writing of poems or essays about how it feels to be a teen parent.

Dr Delene Botha, lecturer at the School of Nursing, said there was a need to establish a sustainable research project that would attract funding. By adding some of the missing components and drawing on other disciplines such as Sociology and Psychiatry, the project was expected to be extended to meet the needs of other stakeholders including teachers, parents and the community at large.

With cellphones and data provided by the Community Engagement office, the “parenting practice” involved receiving SMS messages from nursing students during odd times of the day to remind them about the needs of the baby; such as wet nappies, the “baby” not feeling well and to be soothed.

Sensitising learners yields success

In evaluating their performance, appointed “police learners” became the eyes and ears of the community to observe and report on how “parents” treated their “babies”. Statements from participants and feedback showed Incidences of negligence and the feeling of embarrassment from being a teen parent. The report indicated that learners felt that having a baby while still at school was not a good idea. The project concluded with a debate on the subject.

As part of the programme, a group of postgraduate Education students from Rutgers University in the US, visited Chief Moroka High School and received first-hand information from their interaction with the learners from which they created digital stories of their Community Engagement experience and took these back with them.

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