Aunt Minnie: Emergency radiology elective educates on imaging use

Emergency radiology elective educates on imaging use

By Kate Madden Yee, staff writer

August 13, 2013 — A short emergency radiology elective increases second-year medical students’ understanding of appropriate imaging use and the effects of radiation exposure — as well as their confidence in ordering imaging appropriately, according to a study published in the September issue of Academic Radiology.

Researchers from the University of Michigan Hospital System introduced second-year medical students to the American College of Radiology (ACR) Appropriateness Criteria in an interactive, case-based elective to illustrate use of the criteria for common emergency department complaints (Acad Radiol, September 2013, Vol. 20:9, pp. 1168-1176).

“Given recent advances in and wider availability of complex imaging, physicians are expected to understand imaging appropriateness,” wrote lead author Dr. Jessica Leschied and colleagues.

Twenty-four students participated in a three-day elective covering the ACR criteria, comparative effective imaging, and risks associated with radiation exposure. The researchers assessed the students’ knowledge of the criteria using case-based, multiple-choice questions, and the students’ perceived confidence in using the criteria was assessed on a five-point scale. Leschied’s group then compared the results for these students with a group of second-year students who took a different radiology elective during the same time period.

Before participating in the emergency radiology elective, the group of 24 students answered an average of 3.45 questions correctly out of eight (43.1%). After they completed the course, however, the students answered an average of 5.3 questions correctly (66.3%). In the comparison group, 12 students first answered an average of 3.08 questions correctly, followed by 3.09 correct answers.

Students’ confidence in ordering appropriate imaging improved nearly twofold after completing the elective course, from a range of 1.9 to 3.2 to a range of 3.7 to 4.5 on the five-point scale.

The short elective definitely had a positive result, according to Leschied’s group.


“[After the course], second-year medical students improved their knowledge of appropriate image utilization and perceived awareness of the indications, contraindications, and effects of radiation exposure related to medical imaging,” they wrote.


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