Methodology: 2/5
Usefulness: 2.5/5
Question and Methods: This 160-patient pilot study prospectively compared ultra-low dose CT chest and CXR to routine CT chest in minor blunt thoracic trauma patients.
Findings: ULD-CT chest was 100% sensitive and specific, with a similar degree of radiation exposure to CXR (0.203 vs. 0.175mSv; p=.14), and reasonable interobserver diagnostic reliability (kappa 0.88-1.00).
Limitations: The clinical importance of occult injuries was not evaluated and test characteristics of ULD-CT were calculated based on the interpretations of a single radiologist experienced in this modality.
Interpretation: More research is required to ascertain its benefit to patients, cost-effectiveness and external validity prior to incorporation into practice.