Dr Stephen Kengyelics

Dr Stephen Kengyelics


Stephen is the Programme Leader for Medical Imaging and lectures on digital X-ray imaging and computed tomography. As a  member of a multi-disciplinary team he has developed a novel and innovative range of X-ray simulation software tools to support delivery of radiological science education for a range of learning environments and audiences including individual study, lectures and tutorials within the institute.  

Stephen's PhD research contributed to a European Union funded project comprising several academic and industrial partners collaborating on context aware imaging. The project, called PANORAMA, aimed to deliver solutions for applications in medical imaging, broadcasting systems, and security and surveillance. During the three years of his project he contributed to consortium meetings in Sicily, The Netherlands, France and the United Kingdom. During this time he was awarded first prize at the British Machine Vision Summer School Poster Competition. Swansea, 2014.

Stephen has participated in a number of national and international collaborations in the field of X-ray imaging.

In 2005-8 he was a member of a multi-disciplinary team evaluating the potential of a high speed flat-panel X-ray detector system in clinical practice in Leeds General Infirmary and working in partnership with Phillips Medical Systems, Best, Netherlands.

In 2002-4 he was part of a muli-national team of scientists assessing the performance of  a new generation of X-ray detectors (P4800 Indirect CsI:Tl X-ray detector, Trixell) and worked with members of Philips Medical Systems and Trixell, both in the Netherlands and France.

In 1998-99 he was a member of an international team that evaluated the first selenium-based flat-panel X-ray imaging system to be used clinically in the UK called DirectRay (Sterling, USA) in the Royal Victoria Infirmary, Newcastle. Contributions from the team's work led to sighnificant improvements in the correction algorithms used in the final product. Also during 1998, Stephen collaborated with Fuji Japan and Fuji UK while completing a comprehensive analysis of the performance of three generation of computed radiography imaging plates. In addition, he was awarded the FW Spiers Prize (University of Leeds, 1998) for his Master's thesis: Detective quantum efficiency spectral analysis studies of computed radiography imaging. The Leeds' team were also awarded the Barclay Prize in the same year by the British Institute of Radiology,.

During 1997 Stephen collaborated with Polaroid, Boston, United States to help improve the performance of a unique laser printing system, the Helios 1417 Laser Printer, with specific application to mammography.

Early in his career, in 1996, Stephen participated in the testing and commission of the first selenium-based chest X-ray system in the United Kingdom, based in Leeds General Infirmary.


  • Programme Leader for Medical Imaging

Research interests

His research interests include the application of computers in medical imaging and the characterization of the performance of digital X-ray imaging systems.


  • PhD, Leeds, 2017.
  • MSc (By research. Distinction), Leeds 1997
  • BEng (First Class), Electrical & Electronic Engineering, Plymouth, 1991.

Professional memberships

  • Fellowship of the Higher Education Academy (FHEA)

Student education

Stephen leads a number of modules associated with medical X-ray imaging and computed tomography for undergraduate and postgraduate students. He also contributes to a wide range of teaching activities including radiography, cardivascular medical imaging, neurosensory physics and measurement, and the science and technology of mammography.

Research groups and institutes

  • Leeds Institute of Cardiovascular and Metabolic Medicine