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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

UFS sets trend for higher education institutions
2005-09-21

The University of the Free State (UFS) offers more service-learning courses than any other higher education institution in the country and has the highest number of students enrolled for these service-learning courses.

This was the research findings on higher education institutions conducted between 2001 and 2004 by the Joint Education Trust (JET) into service-learning courses. These are courses which seek to integrate service to the community into the academic core of higher education institutions.

The results of this research indicated that the UFS is one of the few higher education institutions in South Africa that have made progress in integrating community engagement into the mainstream academy.

According to the findings 2 233 students at the UFS participated in service-learning courses supported by JET, while 858 students at the University of Transkei (UNITRA), 636 students at the University of the Western Cape (UWC) and only 600 students at the University of the Witwatersrand (WITS) participated in service-learning courses.

In total there were 6 930 students participating in service learning courses supported by the JET at 10 institutions throughout the country.

The research also found that out of a total of 182 service-learning courses supported by JET countrywide, the UFS had the highest number of such courses at 42, followed by WITS with 28, the University of Kwazulu Natal with 26, UWC 24 and UNITRA with 22.

Nationally, most of the service-learning courses at higher education institutions are offered in the human sciences (62), followed by health sciences (37), education (26), agriculture (14), and economic sciences (11).

According to leading academics, service-learning is a credit-bearing, educational exercise in which students participate in an organised service activity that meets identified community needs and helps the student to gain a deeper understanding of course content and a sense of civic responsibility.

Reacting to the research findings, the Rector and Vice-chancellor of the UFS, Prof Frederick Fourie, said the university feels strongly that there should be integration of service-learning into the academic core of the institution.

“Through service-learning modules the UFS can give expression to its role of service to the community as an institution of higher learning, producing quality graduates who understand the communities in which they will have to function for the rest of their lives,” Prof Fourie said.

According to Mr Jo Lazarus, the project manager of the Community-Higher Education – Service Partnership (CHESP), which falls under the JET, a number of institutions have identified community engagement as a strategic priority and have allocated significant resources from their central budget towards its implementation.

Mr Lazarus said most students have an overwhelmingly positive attitude towards service learning.

“A large percentage of students surveyed indicated that their service-learning course helped to improve their relationship skills, leadership skills and project planning abilities. As significant is the fact that these courses also benefited them in terms of their awareness of cultural differences and opened their eyes about their own cultural stereotypes,” said Mr Lazarus.

“The key challenge still hampering the integration of service-learning as a core function of academic activity is that some institutions still see service-learning as an add-on, and nice-to-have activity,” he said.

According to Mr Lazarus higher education must demonstrate social responsibility and commitment to the common good by making available expertise and infrastructure for service-learning as a form of community engagement.

Media release
Issued by:  Lacea Loader
   Media Representative
   Tel:  (051) 401-2584
   Cell:  083 645 2454
   E-mail:  loaderl.stg@mail.uovs.ac.za
   20 September 2005

 

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