Table 7.

The mean radiation doses for the first examiner during ERCP procedure (μGy).

First examiner	Hand	Thyroid	Eye lens	Chest	No. of Film	Exposure time (min)	X-ray tube location
Present study	27.0	5.0	3.0	6.0	2.5	2.4	Overcouch
Buls et al [14]	0.64	0.45	0.55	nd	4	6.0	Overcouch
Naidu et al. [9]*	NR	0.2	0.04	NR	4.6	5.9	Overcouch
Sulieman et al. [3]	27.2	5.4	3.8	6.2	2.6	2.9	Overcouch
Oztas et al. [10]	20.0	2.0	82.0	NR	1.7	5.7	undercouch

*Extrapolated from annual effective dose (mSv) for 400 procedures per year.

NR: not reported.