Fig. 1

Student knowledge of the association between certain imaging modalities and an increased cancer risk. As observed previously, the more senior the student, the more likely he/she was to be correct. For example, 5th years were more likely to know that ultrasound and MRI were not associated with an increase in cancer risk compared with 4th years. A greater number of 5th year students also knew that CT was associated with an increased risk of cancer compared with 4th years.