Browsing by Author "Smith, Kevin L."

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    Multireader evaluation of radiologist performance for COVID-19 detection on emergency department chest radiographs
    (Elsevier, 2022-02) Gichoya, Judy W.; Sinha, Priyanshu; Davis, Melissa; Dunkle, Jeffrey W.; Hamlin, Scott A.; Herr, Keith D.; Hoff, Carrie N.; Letter, Haley P.; McAdams, Christopher R.; Puthoff, Gregory D.; Smith, Kevin L.; Steenburg, Scott D.; Banerjee, Imon; Trivedi, Hari; Radiology and Imaging Sciences, School of Medicine
    BACKGROUND: Chest radiographs (CXR) are frequently used as a screening tool for patients with suspected COVID-19 infection pending reverse transcriptase polymerase chain reaction (RT-PCR) results, despite recommendations against this. We evaluated radiologist performance for COVID-19 diagnosis on CXR at the time of patient presentation in the Emergency Department (ED). MATERIALS AND METHODS: We extracted RT-PCR results, clinical history, and CXRs of all patients from a single institution between March and June 2020. 984 RT-PCR positive and 1043 RT-PCR negative radiographs were reviewed by 10 emergency radiologists from 4 academic centers. 100 cases were read by all radiologists and 1927 cases by 2 radiologists. Each radiologist chose the single best label per case: Normal, COVID-19, Other - Infectious, Other - Noninfectious, Non-diagnostic, and Endotracheal Tube. Cases labeled with endotracheal tube (246) or non-diagnostic (54) were excluded. Remaining cases were analyzed for label distribution, clinical history, and inter-reader agreement. RESULTS: 1727 radiographs (732 RT-PCR positive, 995 RT-PCR negative) were included from 1594 patients (51.2% male, 48.8% female, age 59 ± 19 years). For 89 cases read by all readers, there was poor agreement for RT-PCR positive (Fleiss Score 0.36) and negative (Fleiss Score 0.46) exams. Agreement between two readers on 1638 cases was 54.2% (373/688) for RT-PCR positive cases and 71.4% (679/950) for negative cases. Agreement was highest for RT-PCR negative cases labeled as Normal (50.4%, n = 479). Reader performance did not improve with clinical history or time between CXR and RT-PCR result. CONCLUSION: At the time of presentation to the emergency department, emergency radiologist performance is non-specific for diagnosing COVID-19.
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    Transitioning to Independent Practice: A Successful Fourth-Year Radiology Resident Curriculum
    (Elsevier, 2017-12) Heitkamp, Darel E.; Ford, Jason M.; Madden, Colleen M.; Smith, Kevin L.; Nartker, Matthew J.; Ponting, John M.; Steenburg, Scott D.; Aaron, Vasantha D.; Kamer, Aaron P.; Radiology and Imaging Sciences, School of Medicine