The DePICTORS Study: discrepancies in preliminary interpretation of CT scans between on-call residents and staff |
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Authors: | Jessica Walls Natalie Hunter Penelope M A Brasher Stephen G F Ho |
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Institution: | (1) University of British Columbia Radiology Residency Training Program, 3350-950 West 10th Avenue, Vancouver, BC, Canada, V5Z 4E3;(2) Centre for Clinical Epidemiology and Evaluation, 828 West 10th Avenue, Vancouver, BC, Canada, V5Z 1L8;(3) Department of Radiology, Vancouver General Hospital, 899 West 12th Avenue, Vancouver, BC, Canada, V5Z 1M9 |
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Abstract: | At many academic hospitals, radiology residents provide preliminary interpretations of CT studies performed outside of regular
working hours. We examined the rate of discrepancies between resident interpretations and final reports issued by staff. We
prospectively obtained 1,756 preliminary reports and corresponding final reports for computed tomography (CT) scans performed
on call between November 2006 and March 2007. The overall rate of clinically significant discrepancies (those that would potentially
alter the patient’s clinical course prior to issue of the final report) was 2.0%. Major discrepancy rates for abdominal/pelvic,
chest, cervical spine and head CT were 4.1%, 2.5%, 1.0% and 0.7%, respectively. Senior residents had fewer major discrepancies
compared to their junior colleagues. Time of interpretation was also evaluated, but a statistically significant relationship
was not observed. In summary, this study demonstrates a low discrepancy rate between residents and staff radiologists and
identifies areas where after-hours service may be further improved. |
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Keywords: | Computed tomography Emergency radiology Interpretation Discrepancy Resident reporting |
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