zarina lockhat

Prof. Dr. zarina lockhat

orcid

Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
6 March 2024 in Cancers
Verified
Journal Article
Open access
PDF file
Demetra Danielle DemetriouDemetra Danielle Demetriou
Demetra Danielle Demetriou
ZLzarina lockhat
zarina lockhat
LBLuke Brzozowski
Luke Brzozowski
KSKamal S. Saini
Kamal S. Saini
ZDZodwa Dlamini
Zodwa Dlamini
RHRodney Hull
Rodney Hull
Despite significant progress in the prevention, screening, diagnosis, prognosis, and therapy of breast cancer (BC), it remains a highly prevalent and life-threatening disease affecting millions worldwide. Molecular subtyping of BC is crucial for predictive and prognostic purposes due to the diverse clinical behaviors observed across various types. The molecular heterogeneity of BC poses uncertainties in its impact on diagnosis, prognosis, and treatment. Numerous studies have highlighted genetic and environmental differences between patients from different geographic regions, emphasizing the need for localized research. International studies have revealed that patients with African heritage are often diagnosed at a more advanced stage and exhibit poorer responses to treatment and lower survival rates. Despite these global findings, there is a dearth of in-depth studies focusing on communities in the African region. Early diagnosis and timely treatment are paramount to improving survival rates. In this context, radiogenomics emerges as a promising field within precision medicine. By associating genetic patterns with image attributes or features, radiogenomics has the potential to significantly improve early detection, prognosis, and diagnosis. It can provide valuable insights into potential treatment options and predict the likelihood of survival, progression, and relapse. Radiogenomics allows for visual features and genetic marker linkage that promises to eliminate the need for biopsy and sequencing. The application of radiogenomics not only contributes to advancing precision oncology and individualized patient treatment but also streamlines clinical workflows. This review aims to delve into the theoretical underpinnings of radiogenomics and explore its practical applications in the diagnosis, management, and treatment of BC and to put radiogenomics on a path towards fully integrated diagnostics.

1 May 2018 in Forensic Science International
Verified
Journal Article
Closed access
HDHeléne F. Dorfling
Heléne F. Dorfling
ZLzarina lockhat
zarina lockhat
SPSamantha Pretorius
Samantha Pretorius
MSMaryna Steyn
Maryna Steyn
AOAnna C. Oettlé
Anna C. Oettlé

2 November 2022 in International Journal of Speech-Language Pathology
Verified
Journal Article
Closed access
RMRoxanne Malan
Roxanne Malan
Jeannie Van der LindeJeannie Van der Linde
Jeannie Van der Linde
AKAlta Kritzinger
Alta Kritzinger
MGMarien Alet Graham
Marien Alet Graham
EKEsedra Krüger
Esedra Krüger
ZLzarina lockhat
zarina lockhat
To describe the evolution of swallowing and feeding abilities of neonates with hypoxic-ischaemic encephalopathy (HIE) during hospitalisation.A longitudinal cohort study was used. Twenty-nine partic...

21 January 2023
Verified
Book Chapter
Closed access
PDF file
Demetra Danielle DemetriouDemetra Danielle Demetriou
Demetra Danielle Demetriou
RHRodney Hull
Rodney Hull
MKMmamoletla Kgoebane-Maseko
Mmamoletla Kgoebane-Maseko
ZLzarina lockhat
zarina lockhat
ZDZodwa Dlamini
Zodwa Dlamini

10 July 2024 in International journal of legal medicine
Verified
Journal Article
Open access
PDF file
GKGabriele Christa Krüger
Gabriele Christa Krüger
RJRichard Jantz
Richard Jantz
EWElizabeth van der Walt
Elizabeth van der Walt
ZLzarina lockhat
zarina lockhat
Ericka Noelle L'AbbéEricka Noelle L'Abbé
Ericka Noelle L'Abbé
Continual re-evaluation of standards for forensic anthropological analyses are necessary, particularly as new methods are explored or as populations change. Indian South Africans are not a new addition to the South African population; however, a paucity of skeletal material is available for analysis from medical school collections, which has resulted in a lack of information on the sexual dimorphism in the crania. For comparable data, computed tomography scans of modern Black, Coloured and White South Africans were included in addition to Indian South Africans. Four cranial morphoscopic traits, were assessed on 408 modern South Africans (equal sex and population distribution). Frequencies, Chi-squared tests, binary logistic regression and random forest modelling were used to assess the data. Males were more robust than females for all populations, while White South African males were the most robust, and Black South African females were the most gracile. Population differences were noted among most groups for at least two variables, necessitating the creation of populations-specific binary logistic regression equations. Only White and Coloured South Africans were not significantly different. Indian South Africans obtained the highest correct classifications for binary logistic regression (94.1%) and random forest modelling (95.7%) and Coloured South Africans had the lowest correct classifications (88.8% and 88.0%, respectively). This study provides a description of the patterns of sexual dimorphism in four cranial morphoscopic traits in the current South African population, as well as binary logistic regression functions for sex estimation of Black, Coloured, Indian and White South Africans.

1 January 2025 in South African Journal of Radiology
Verified
Journal Article
Open access
PDF file
RMRadhiya Minty
Radhiya Minty
NMNasreen Mahomed
Nasreen Mahomed
NWNicole van Wyk
Nicole van Wyk
GMGopolang Mndebele
Gopolang Mndebele
ZLzarina lockhat
zarina lockhat
ARAshesh Ranchod
Ashesh Ranchod
Background: The Greulich and Pyle (GP) method is the most commonly used manual bone age assessment method but it is associated with interrater variability. The BoneXpert method is fully automated, eliminates interrater variability and has been validated for use in various populations. Objectives: To compare the manual GP method with the automated BoneXpert method in performing bone age assessment of children with various paediatric endocrinology diagnoses. Method: Three manual readers performed manual bone age assessment, and BoneXpert software performed automated bone age assessment on 260 left hand-wrist radiographs. Images where the average of three manual readers (Manual BA) deviated from BoneXpert BA by > 1.5 years, were re-read by an external reader, producing a Reference BA. Manual BA was compared to Carpal BA that was produced by the software. A composite bone age (Comp BA) for the software was defined to estimate the weighting on carpal and tubular bones to achieve the best agreement with Manual BA. Results: The interclass correlation (ICC) between each manual reader was > 0.9, indicating a high positive correlation. The ICC between Manual BA and BoneXpert BA was 0.982. The Comp BA for BoneXpert that would achieve the best fit with Manual BA, places a 50% weighting on Carpal BA and 50% weighting on Tubular BA. Conclusion: The BoneXpert method is efficient, well-validated and shows a positive correlation with the manual GP method. An estimated weightage of 50% to carpal bones and 50% to tubular bones resulted in an automated Comp BA with the best agreement with Manual BA. Contribution: This original research article compares manual and automated bone age assessment methods to evaluate the use of artificial intelligence tools in the South African context.