Table 2.

Radiation exposure

	1–3 months	4–6 months	7–9 months
Number of ERCP procedure	43	47	38
Cumulative fluoroscopy time	10 949	9160	5966
Cumulative number of digital radiographs	165	153	158
Radiation dose (TLD1) (mSv)—barrier surface, patient’s side	30.69	25.89	23.96
Radiation dose (TLD2) (mSv)—barrier surface, medical staff’s side	1.50	0.25	0.22
Radiation dose (TLD3) (mSv)—on the thyroid shield	0.34	0.16	0.15
Radiation dose (TLD4) (mSv)—inside the lead apron, endoscopist	0.33	0.12	0.09
Radiation dose (TLD5) (mSv)—inside the lead apron, nurse	0.14	0.10	0.08

ERCP, endoscopic retrograde cholangiopancreatography; TLD, thermoluminescence dosimetry.