Rationale and Objectives
To examine the effect of fatigue on diagnostic performance and interpretation of complex
CT trauma studies by radiology residents.
Materials and Methods
Ten 2nd, 3rd, and 4th year radiology residents were given 1 hour to review as many
complex CT cases as they could, once when they were fresh and once when they were
fatigued (after a full day or night of diagnostic reading activity). Number of cases
completed, interpretation accuracy and time per case were analyzed.
Results
On average readers completed 7.5 cases when fresh and 7.3 when fatigued, with 4th
and 3rd year residents spending more time per case when fresh than fatigued and 2nd
year residents spending more time when fatigued. The total number of true positives
for major (fresh mean = 29.4 vs fatigued mean = 24.1) and minor (fresh mean = 23.30
vs fatigued mean = 18.90) findings decreased for fresh vs fatigued; and there was
a significant difference as a function of year of residency (F = 4.72, p = 0.027). The 4th year residents had the most TPS in both conditions, followed by
3rd then 2nd year residents. There were more false positives when fatigued than fresh.
Conclusion
Fatigue significantly impacts radiologic diagnostic efficiency and efficacy, and differs
as a function of year of residency.
Key Words
Abbreviations:
AIS (Abbreviated Injury Scale), ANOVA (Analysis of Variance), CT (Computed Tomography), FP (False Positive), ISS (Injury Severity Score), MAIS (Maximum Abbreviated Injury Scale), NISS (New Injury Severity Score), ROC (Receiver Operating Characteristic), SD (Standard Deviation), SOFI (Swedish Occupational Fatigue Inventory), SSQ (Simulator Sickness Questionnaire), TP (True Positive)To read this article in full you will need to make a payment
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Article Info
Publication History
Published online: July 01, 2020
Accepted:
June 3,
2020
Received in revised form:
June 2,
2020
Received:
March 3,
2020
Identification
Copyright
© 2020 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.
