Researchers at St Martins College (soon to become University of Cumbria) are planning a project that could help to save lives through a reduction in the number of inaccurate x-ray diagnoses and quicker warnings of the early signs of bowel cancer.
In certain examinations, radiographers and radiologists currently use Computer Aided Diagnosis (CAD) software to perform an initial scan of the x-rays and highlight any areas of concern. Based on these results, the observer then studies the x-ray visually and makes a final diagnosis. However, Professor Manning and colleagues will consider whether this is the most effective technique and suggests the current system could be improved with the help of eye tracking technology.
This technology can analyse the strategies used by experienced radiologists and radiographers to pin-point which part of the x-ray the eye is focused on and measure it to the accuracy of half of one degree. This information could then be used to re-programme CAD software to identify disease more efficiently, mimicking that of human experts – but in a more consistent way. This could substantially reduce misdiagnoses. The study could also have implications for the future training of radiographers. The eye tracking technology will allow trainee radiographers to keep a record of how accurate an analysis of x-rays they provide in order to further refine their skills.
The team is about to apply for funding for the study, which if successful, will begin during summer 2008 for a 3-year trial. The trial will take place at three centres: University of Cumbria, Loughborough University and University College Dublin.
