Scoring Systems in Computer-Based Training for Digital Mammography

A computer-based training tool was developed through a collaborative design process. The tool allows trainee radiologists to access a large number of suspicious lesions. The tool employs a certainty-based scoring system in which trainees‟ responses are scored not just as right or wrong but according to their confidence. Different approaches to providing trainees with feedback were considered: one based on a histogram and one using a line graph of cumulative scores. Following an initial assessment by radiologists, a revised scheme was introduced in which disagreements between trainee and expert are rated according the clinical or pedagogical significance of the error.