The impact of a short course of study on the performance of radiographers when highlighting fractures on trauma radiographs ('the red dot system')

This study was set up to determine the effect of a short course of study on radiographers' ability to identify fractures in a trauma context (Red Dot system). The performance of 133 radiographers attending Red Dot courses delivered from April 1999 to September 2003 was evaluated prospectively using a selected sample of radiographs. Assessment of fracture identification occurred before, immediately after and 6 months after the course. The same film set was used and consisted of 30 axial and appendicular cases, 18 with fractures and 12 normal or normal variants. Following a test for normality of the data, a Wilcoxon Signed-Rank Test was selected and paired tests were done between each assessment for sensitivity and specificity. There were significant differences in sensitivity between all three assessments (p0.05), the pre-course/post-course and the post-course/6 month comparison being highly significant (p0.01). Specificity showed significant differences between the pre-course/post-course (p0.01) and the post-course/6 month follow-up scores (p0.05), but no difference was found between the 6 months/pre-course scores. The participants improved their ability to identify fractures and this appears to be as a result of the course. This improvement was not demonstrable after 6 months, although only 30% of participants took part in this follow-up. Radiographers can improve their image interpretation skills from a short course of study, but probably need continuing professional development to maintain these skills