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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

Teacher professionalism and status under Commonwealth radar
2010-03-26

 
From the left are: Ms Simone De Cormarmond, Chairperson: Commonwealth Foundation; Prof. Jonathan Jansen, Rector and Vice-Chancellor, University of the Free State (UFS); Mr Samuel Isaacs, CEO: SAQA; and Dr Carol Anne Spreen, Lecturer at the University of Maryland, USA).
Photo: Ian van Straaten


International delegates attending the 5th Annual Commonwealth Teacher Research Symposium held at the University of the Free State (UFS) in Bloemfontein this week unanimously agreed that more research still had to be done on issues of recognition, registration and standards affecting teachers and teaching across Commonwealth countries.

This two-day gathering of researchers, officials and representatives of regional international organisations and higher education institutions agreed that issues of teacher migration, the professionalism of teachers, teacher preparation and the use of teaching standards, as well as the comparability and recognition of teacher qualifications should be further researched.

The delegates agreed on the following based on the research and data that were presented and shared with all the participants:

Teacher migration is recognised as an increasing global phenomenon that requires ongoing research in the Commonwealth.
Recognising that inequalities and differences within and across Commonwealth countries exist, and considering that fair and ethical treatment in the international recruitment of teachers is an important cornerstone of the Commonwealth Teacher Recruitment Protocol.

Teacher training, the recognition of teacher qualifications, the professional registration of teachers and the development of professional teacher standards should be actively encouraged through ongoing pan-Commonwealth research.

An increased acknowledgement of the role of the professionalisation of teachers through an improved understanding of teacher qualifications and standards.
There should be a specific research focus on teacher preparation and the use of teaching standards.

An increased comparability and recognition of teacher qualifications across Commonwealth countries should be actively encouraged.
Advocacy of teachers’ rights, effective protection of the vulnerable teacher, and appropriate strategies should be promoted to uplift the status of teachers and teaching as a profession.

The Commonwealth Teacher Recruitment Protocol, amongst other things, aims to balance the rights of teachers to migrate internationally against the need to protect the integrity of national education systems, and to prevent the exploitation of the scarce human resources of poor countries.

Delivering his keynote address at the symposium, the Rector and Vice-Chancellor of the UFS, Prof. Jonathan Jansen, decried the quality of professional qualifications in South Africa.

“We have become very good at manufacturing outcomes. We actually have become very good at giving an impression of having achieved particular outcomes without having achieved them at all,” he said.
“So what does it mean to talk about outcomes in an unequal country with unequal resources? What does it mean to talk about qualifications when we do not trust the outcomes?”

He suggested that the teaching profession should be subjected to a peer review mechanism and that the practice of setting minimum standards should be dealt away with because it results in minimum outcomes.

Dr Carol Anne Spreen, lecturer at the University of Maryland in the USA, proposed that countries should improve the quality of their own teachers instead of importing teachers from other countries.

The research symposium was organised by the Commonwealth Secretariat and hosted by the South African Qualifications Authority (SAQA) and the UFS.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za  
26 March 2010

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