Table 6: Third staff (trainee) mean radiation doses ( Gy) for group B per ERCP procedure. The range is in parenthesis.

Third examiner Mean

Chest2472 (12.8–429)
Thyroid2463 (16.1–382.1)
Forehead2465 (13.4–317.8)
Hand24162 (32.1–739.5)

: sample size.