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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

Number of PhD graduates a record for School of Accountancy
2017-06-27

Description: School of Accountancy PhDs Tags: School of Accountancy PhDs

From left to right: Dr Stiaan Lamprecht,
Dr Cornelie Crous, Prof Hentie van Wyk
(Programme Director: School of Accountancy),
Prof Francis Pietersen (Rector and Vice-Chancellor),
Prof Dave Lubbe (Research Fellow: School of Accountancy),
Dr Léandi Steenkamp and Dr Louis Smidt.
Photo: Charl Devenish

This year’s mid-year graduation ceremony for master’s and doctoral degrees saw the School of Accountancy honouring four alumni with PhDs in Accounting on 26 June 2017 at the Callie Human – a record for the School of Accountancy.

Professor Hentie van Wyk, Programme Director of the School of Accountancy and promoter of one of the doctoral degrees, says, “Over the past three to four decades before 2017, no more than five doctoral degrees were awarded by the School of Accountancy.”

Dr Cornelie Crous, Dr Léandi Steenkamp, and Dr Louis Smidt received their doctoral degrees with specialisation in Auditing, and Dr Stiaan Lamprecht with specialisation in Accounting.

PhD candidates’ thesis and personal profiles
Dr Crous, who was born in Bloemfontein on 30 June 1979, is currently working in the School of Accountancy as a Senior Lecturer in Auditing. Her thesis, which is titled ‘Corporate Governance in South African Higher Education Institutions’, influences the application of corporate governance principles in higher-education institutions. It provides a thorough breakdown of the application and disclosure of the application of corporate governance principles in terms of both South African and international best practices in publicly-funded universities in the country.

Dr Lamprecht’s thesis, ‘A Financial Reporting Framework for South African Listed Companies under Business Rescue’, contributes innovative knowledge and insights to the existing body of knowledge on financial reporting.  According to his study, with reference to a listed company under business rescue, there is a need for an underlying financial reporting assumption that varies from the recognised going concern and liquidation assumptions. Users of the financial statements of such a company also require an accounting measurement model based on current values, as opposed to the mixed-measurements accounting model employed at present.

Dr Smidt completed both his master’s and PhD degrees at the UFS. This father of two sons is currently a lecturer at the Tshwane University of Technology. His thesis, ‘A Maturity Level Assessment on the use of Generalised Audit Software by Internal Audit Functions in the South African Banking Industry’, has already started to contribute to the internal audit profession in South Africa and globally.  Due to its existing extension to internal audit functions in various industries in Canada, Columbia, Portugal, and Australia, the value has been enhanced, as it now provides an internationally correlated set of results.

Dr Steenkamp, who completed her Magister in Auditing with a distinction at the UFS in 2013, is a qualified Chartered Accountant (CA (SA)), Certified Internal Auditor (CIA), Certified Information Systems Auditor (CISA), Professional Accountant (SA), and member of all the professional bodies. Her thesis, ‘The Sectional Title Industry in South Africa: Enhancing Accounting and Auditing Practices’, makes a significant impact on the sectional title industry and the accounting profession in South Africa. The literature review gave an in-depth overview of risks associated with sectional title for various stakeholders (i.e. owners, trustees, managing agents, auditors and accountants, and EAAB-appointed inspectors).

“Indeed a special day for the School of Accountancy!” says an ecstatic Prof Van Wyk. Professor Dave Lubbe, Research Fellow in the School of Accountancy, was the promoter for three of the four doctoral degrees.

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