Darrion Walker recently earned a PhD in Applied Physics from the Faculty of Science and Technology at The University of the West Indies, Mona (The UWI Mona). This accomplishment was achieved under the guidance of Professor Mitko Voutchkov (Department of Physics, Faculty of Science and Technology) and Professor William Aiken (Section of Surgery and Anaesthetics, Faculty of Medical Sciences). The study focused on investigating the relationship between the elements found in kidney stones using nuclear analytical techniques such as neutron activation and x-ray fluorescence, with the aim of developing a model based on bioindicators for predicting kidney stone disease.

Darrion’s interest in radiation science stemmed from early exposure to the field during career day talks at Cornwall College. This motivated him to pursue Diagnostic Imaging (Radiography) in the Faculty of Medical Sciences at The UWI Mona. As his interest expanded, Darrion pursued an MSc in Medical Physics within the Department of Physics immediately afterward. Through his relationship with Professor Mitko Voutchkov, who became a mentor, he began applying theories of radiation and nuclear physics to medicine. This led to his dissertation study in Applied Physics, where he analysed the elemental composition of kidney stones, identified relationships, and developed models to predict an increased risk of kidney stone development based on dietary intake of different elements. This study was novel and the first of its kind in the Caribbean.

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