Radiation dose:

No. (%) of correct answers

Background radiation dose (mSv)

48 (60.0%)

Chest X-ray radiation dose (mSv)

51 (63.8%)

Equivalent number of chest x rays in radiological investigations:

X ray

24 (30.0%)

CT

14 (17.5%)

MRI

28 (35.0%)

Ultrasound

58 (72.5%)