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(Castner, N., Kasneci, E., Kübler, T., Scheiter, K., Richter, J., Eder, T., Hüttig, F., & Keutel, C. (2018). Scanpath comparison in medical image reading skills of dental students: Distinguishing stages of expertise development. In Proceedings of the 2018 ACM symposium on eye tracking research and applications (pp. 39–48). New York: ACM.)
Castner, N., Kasneci, E., Kübler, T., Scheiter, K., Richter, J., Eder, T., Hüttig, F., & Keutel, C. (2018). Scanpath comparison in medical image reading skills of dental students: Distinguishing stages of expertise development. In Proceedings of the 2018 ACM symposium on eye tracking research and applications (pp. 39–48). New York: ACM.Castner, N., Kasneci, E., Kübler, T., Scheiter, K., Richter, J., Eder, T., Hüttig, F., & Keutel, C. (2018). Scanpath comparison in medical image reading skills of dental students: Distinguishing stages of expertise development. In Proceedings of the 2018 ACM symposium on eye tracking research and applications (pp. 39–48). New York: ACM., Castner, N., Kasneci, E., Kübler, T., Scheiter, K., Richter, J., Eder, T., Hüttig, F., & Keutel, C. (2018). Scanpath comparison in medical image reading skills of dental students: Distinguishing stages of expertise development. In Proceedings of the 2018 ACM symposium on eye tracking research and applications (pp. 39–48). New York: ACM.
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(Richter, J., Scheiter, K., Eder, T. F., Huettig, F., & Keutel, C. (2019). How massed practice improves visual expertise in reading panoramic radiographs in dental students: An eye tracking study. Manuscript submitted for publication.)
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In dental medicine, interpreting radiographs (i.e., orthopantomograms, OPTs) is an error-prone process, even in experts. Effective intervention methods are therefore needed to support students in improving their image reading skills for OPTs. To this end, we developed a compare-and-contrast intervention, which aimed at supporting students in achieving full coverage when visually inspecting OPTs and, consequently, obtaining a better diagnostic performance. The comparison entailed a static eye movement visualization (heat map) on an OPT showing full gaze coverage from a peer-model (other student) and another heat map showing a student’s own gaze behavior. The intervention group (N = 38) compared five such heat map combinations, whereas the control group (N = 23) diagnosed five OPTs. Prior to the experimental variation (pre-test) and after it (post-test), students in both conditions searched for anomalies in OPTs while their gaze was recorded. Results showed that students in the intervention group covered more areas of the OPTs and looked less often and for a shorter amount of time at anomalies after the intervention. Furthermore, they fixated on low-prevalence anomalies earlier and high-prevalence anomalies later during the inspection. However, the students in the intervention group did not show any meaningful improvement in detection rate and made more false positive errors compared to the control group. Thus, the intervention guided visual attention but did not improve diagnostic performance substantially. Exploratory analyses indicated that further interventions should teach knowledge about anomalies rather than focusing on full coverage of radiographs.
Advances in Health Sciences Education – Springer Journals
Published: Jun 2, 2020
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