title: The DePICTORS Study: discrepancies in preliminary interpretation of CT scans between on-call residents and staff.
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.
authors.affiliation: University of British Columbia Radiology Residency Training Program, 3350-950 West 10th Avenue, Vancouver, BC, Canada.
authors.forename: Jessica
authors.initials: J
authors.lastname: Walls
authors.forename: Natalie
authors.initials: N
authors.lastname: Hunter
authors.forename: Penelope M A
authors.initials: PM
authors.lastname: Brasher
authors.forename: Stephen G F
authors.initials: SG
authors.lastname: Ho
mesh_terms: D002983:Clinical Competence; D003951:Diagnostic Errors; D006257:Head / Q000000981:diagnostic imaging; D006801:Humans; D007396:Internship and Residency; D011446:Prospective Studies; D011871:Radiology / Q000193:education; D014057:Tomography, X-Ray Computed