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Identification of fractures on pediatric foot radiographs: do localization cues improve diagnostic accuracy and reduce interpretation time?

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Abstract

Objective

To investigate the diagnostic accuracy and time in the detection of fractures on pediatric foot radiographs marked without and with localization cues.

Method

One-hundred randomly selected foot radiographic examinations that were performed on children (<18 years old) after injury and with at least 4 weeks of follow-up were included. Blinded to history and diagnosis, 4 readers (one each: medical student, pediatrician, pediatric orthopedic surgeon, and pediatric musculoskeletal radiologist) retrospectively and independently reviewed each examination twice (without and with cue, at least 1 month apart, and after randomization). Each reader recorded the presence or absence of a fracture, fracture location, diagnostic confidence, and the total (interpretation) time spent on each study. Diagnostic accuracy, reader confidence, and interpretation time were compared between examinations without and with cues.

Results

Our study included 59 examinations without and 41 with fractures (21 phalangeal, 18 metatarsal, and 2 tarsal fractures). Localization cues improved inter-reader agreement (κ=0.36 to 0.64), overall sensitivity (68 to 72%), specificity (66 to 73%), and diagnostic accuracy (67 to 73%); thus, overcalled and missed rates also improved from 34 to 27% and 32 to 28%, respectively. Reader confidence improved with cue (49 to 61%, p<0.01) with higher incremental improvement with younger children (30% for 1–6 years; 14% for 7–11 years; and 10% for 12–17 years). Interpretation time decreased by 40% per examination (40±22 s without to 24±13 s with cues, p<0.001).

Conclusion

Localization cues improved diagnostic accuracy and reader confidence, reducing interpretation time in the detection of pediatric foot fractures.

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Authors and Affiliations

  1. Drexel University College of Medicine, Philadelphia, PA, USA

    Vandan Patel & Shahwar M. Tariq

  2. Department of Radiology, Children’s Hospital of Philadelphia, 3401 Civic Center Blvd, Philadelphia, PA, 19104, USA

    Vandan Patel, Shahwar M. Tariq, Shijie Hong, Andressa Guariento & Jie C. Nguyen

  3. Division of Orthopedic Surgery, Children’s Hospital of Philadelphia, Philadelphia, PA, USA

    Richard Davidson

  4. University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA

    Richard Davidson & Jie C. Nguyen

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  1. Vandan Patel
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  2. Shahwar M. Tariq
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Correspondence to Jie C. Nguyen.

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Patel, V., Tariq, S.M., Hong, S. et al. Identification of fractures on pediatric foot radiographs: do localization cues improve diagnostic accuracy and reduce interpretation time?. Skeletal Radiol 53, 345–352 (2024). https://doi.org/10.1007/s00256-023-04401-9

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  • DOI: https://doi.org/10.1007/s00256-023-04401-9

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