Table 4.

Occupational radiation exposure of monitored nuclear medicine workers in Taiwan from 2013 to 2020.

	Number of monitored nuclear medicine workers			Related parameters of occupational radiation exposure
	Male	Female	Total	A	B	C	D	E
2013	422	610	1032	379	36.72	414.87	0.40	1.09
2014	417	613	1030	372	36.12	346.09	0.34	0.93
2015	442	620	1062	449	42.28	475.94	0.45	1.06
2016	449	627	1076	455	42.29	522.74	0.49	1.15
2017	464	647	1111	522	46.98	604.77	0.54	1.16
2018	470	653	1123	562	50.04	641.80	0.57	1.14
2019	462	651	1113	504	45.28	573.90	0.52	1.14
2020	484	633	1117	503	45.03	551.74	0.49	1.10
Total increased number	62	23	85	124	8.31	136.87	–	–
Mean annual increased number	8.86	3.29	12.14	17.71	1.19	19.55	–	–
Total increase rate (%)	14.69	3.77	8.24	32.72	22.63	32.99	–	–

A parameter: the number of the measurably exposed workers.

B parameter: the proportion of the measurably exposed workers to the total monitored workers (%).

C parameter: the annual collective exposure dose (man-Sv).

D parameter: the mean annual effective exposure dose of the total monitored workers (mSv).

E parameter: the mean annual effective exposure dose of the measurably exposed workers (mSv).