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23 September 2020 | Story Prof Theodore Petrus | Photo Supplied
Prof Theodore Petrus is Associate Professor of Anthropology at the University of the Free State.

As we as a South African nation prepare to celebrate Heritage Day on 24 September, and as we reflect on our heritage during Heritage Month, what stands out clearly is that this year’s heritage celebrations will be somewhat … different. It will not be like previous celebrations because as a country, we – along with our fellow continental and global citizens – have experienced what can be described as one of the greatest health, social, and economic challenges that we as a species have ever faced. The repercussions and impact of the COVID-19 pandemic will be felt for some time to come. And it is this realisation that may cast a little damper on our celebrations during this #Heritage Month.

But what can our shared heritage as South Africans teach us about who we are as a people, and how can this knowledge help us to adapt to and overcome the long-term challenges wrought not only by the pandemic, but also by the many other challenges facing us? 

Heritage Day is a celebration of our cultural heritage and diversity as a nation. It presents us with an opportunity to reflect on our individual and collective heritage. It is also an opportunity for us to take stock of the cultural and other resources that enable and empower us to take ownership of what we want to be as a nation, as a country, as a people. 
So, in view of the questions raised earlier, here are some ideas on what I think our shared heritage can teach us:

1. The heritage of where we come from

Inasmuch as our past is a painful one – a past that still has lingering effects decades after the transition to a democratic dispensation – it still plays a fundamental role in shaping who we are now, and who we want to become.
Colonialism and apartheid sought to suppress our indigenous cultures and traditions, and had a negative impact on our psyche, self-confidence, and dignity as indigenous and African people. But one positive that came from this, is that if it was not for our shared heritage of colonialism and apartheid, we probably would not have become the nation we needed to become to bring it to an end.  

Instead of destroying symbols of that painful past, we need to shift our perspective to re-interpret those symbols in a new way. The power of cultural symbols lies in their meanings. Symbolic anthropologist Victor Turner spoke about the ‘multivocality of symbols’, meaning that we can ascribe whatever meanings to our cultural symbols we choose. Let us reflect on how we can change the current meanings we ascribe to our cultural symbols that reflect an awareness of how the heritage of where we come from does not keep us trapped in negative and painful meanings of these symbols, but instead inspire us to create new positive meanings.

2. The heritage of where we are now

After 1994, we began the process of creating a new contemporary heritage as a nation struggling to free itself of the burden of a painful past. And while it was difficult, we have made significant strides. Yes, we do still face challenges rooted in the past: institutional and structural violence; race and diversity-related issues; intercultural and intergroup conflicts; crime and violence against men, women, and children; corruption at various levels of governance; and others. We are also faced with ‘newer’ challenges as a country that is part of the globalised world. Poverty, inequality, unemployment, slow economic growth, and ailing infrastructure are all contemporary problems, some of them rooted in the past, others the product of the contemporary context. 

What can we learn from our shared heritage of where we are now that can help us to overcome these contemporary challenges? We need to remind ourselves of what we are capable of as a nation. We have ended an oppressive regime, not once but twice. And, with all of the challenges, problems, and obstacles, we are still here.

3. The heritage of where we are going

This might sound strange, because heritage usually refers to the past and present. Rarely do we speak of heritage in a future-oriented context. However, as a nation, given our past and given our present, where we come from and where we are now determines where we are going. 

As South Africans, we need to ask the question: where do we want to go? Are we heading in that direction? If not, how do we change course so that we do go in the right direction? I have no simple answer. But what I can suggest is that it should start with critical self-reflection, both individually and collectively. We also need to ask ourselves what legacy we want to leave for future generations. Do we want them to still be struggling with the same problems and challenges that we are dealing with right now? Or do we want to leave them a legacy of a nation that stood up to its challenges, took ownership of them, and found a way to overcome them?

A globally devastating pandemic. A painful past. A present wrought with seemingly insurmountable obstacles. As a South African, as a child of the soil, I know that as a nation we can overcome, and we can emerge better and stronger. That is our heritage. The heritage of hope.

 

Opinion article by Prof Theodore Petrus, Department of Anthropology, University of the Free State 

News Archive

Mathematical methods used to detect and classify breast cancer masses
2016-08-10

Description: Breast lesions Tags: Breast lesions

Examples of Acho’s breast mass
segmentation identification

Breast cancer is the leading cause of female mortality in developing countries. According to the World Health Organization (WHO), the low survival rates in developing countries are mainly due to the lack of early detection and adequate diagnosis programs.

Seeing the picture more clearly

Susan Acho from the University of the Free State’s Department of Medical Physics, breast cancer research focuses on using mathematical methods to delineate and classify breast masses. Advancements in medical research have led to remarkable progress in breast cancer detection, however, according to Acho, the methods of diagnosis currently available commercially, lack a detailed finesse in accurately identifying the boundaries of breast mass lesions.

Inspiration drawn from pioneer

Drawing inspiration from the Mammography Computer Aided Diagnosis Development and Implementation (CAADI) project, which was the brainchild Prof William Rae, Head of the department of Medical Physics, Acho’s MMedSc thesis titled ‘Segmentation and Quantitative Characterisation of Breast Masses Imaged using Digital Mammography’ investigates classical segmentation algorithms, texture features and classification of breast masses in mammography. It is a rare research topic in South Africa.

 Characterisation of breast masses, involves delineating and analysing the breast mass region on a mammogram in order to determine its shape, margin and texture composition. Computer-aided diagnosis (CAD) program detects the outline of the mass lesion, and uses this information together with its texture features to determine the clinical traits of the mass. CAD programs mark suspicious areas for second look or areas on a mammogram that the radiologist might have overlooked. It can act as an independent double reader of a mammogram in institutions where there is a shortage of trained mammogram readers. 

Light at the end of the tunnel

Breast cancer is one of the most common malignancies among females in South Africa. “The challenge is being able to apply these mathematical methods in the medical field to help find solutions to specific medical problems, and that’s what I hope my research will do,” she says.

By using mathematics, physics and digital imaging to understand breast masses on mammograms, her research bridges the gap between these fields to provide algorithms which are applicable in medical image interpretation.

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