This Article Abstract Full Text Full Text (PDF) Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Manning, D Articles by Crawford, T Search for Related Content PubMed PubMed Citation Articles by Manning, D Articles by Crawford, T

Time-dependent observer errors in pulmonary nodule detection

¹ School of Medical Imaging Sciences, St Martin's College, Lancaster LA1 3JD, ² Department of Psychology, Lancaster University, Lancaster, UK

View larger version (17K): [in a new window]   Figure 1. Time-related decisions for radiologists. Compared with less experienced observers the radiologists made their decisions faster. The separation between the positive and negative decision pair curves is closer than for all other groups.

View larger version (18K): [in a new window]   Figure 2. Time-related decisions for radiographers post-training. After experience and training over 6 months and 500 cases the radiographers have speeded their decision making and markedly reduced the separation of their true and false negative curves. Compare with Figure 3.

View larger version (18K): [in a new window]   Figure 3. Time-related decisions for radiographers pre-training.

View larger version (18K): [in a new window]   Figure 4. Time–related decisions for novices. Novices show a similar trend to the experienced observers although their positive decision curves are reversed and more widely separated. All their decisions extend further along the time axis.