Table 5.

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

	Number of monitored radiotherapy workers			Related parameters of occupational radiation exposure
	Male	Female	Total	A	B	C	D	E
2013	655	717	1372	76	5.54	40.62	0.03	0.53
2014	707	744	1451	80	5.51	25.33	0.02	0.32
2015	738	771	1509	89	5.90	30.91	0.02	0.35
2016	766	766	1532	37	2.42	29.08	0.02	0.79
2017	789	793	1582	67	4.24	62.19	0.04	0.93
2018	802	811	1613	72	4.46	42.87	0.03	0.60
2019	833	865	1698	59	3.47	31.67	0.02	0.54
2020	851	901	1752	75	4.28	37.32	0.02	0.50
Total increased number	196	184	380	−1	−1.26	−3.30	–	–
Mean annual increased number	28	26.29	54.29	−0.14	−0.18	−0.47	–	–
Total increase rate (%)	29.92	25.66	27.70	−1.32	−22.74	−8.12	–	–

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).