Interventional radiology at the meetings of the German Radiological Society from 1998 to 2008: evaluation of structural changes and radiation issues

Insights into Imaging

Table 2 Numbers and percentages of CT/ionising non-CT contributions in IR relating to dose

Years	IR			CT							IO non-CT
	All	With IO/CT		All	Dose contributions						All	Dose contributions
	n	n	%	n	Ment	Ment %	Topic	Topic %	Reduct	Reduct %	n	Ment	Ment %	Topic	Topic %	Reduct	Reduct %
1998	136	39	28.7	23	2	8.7	2	8.7	0	0.0	16	1	6.3	1	6.3	1	6.3
1999	134	19	14.2	15	2	13.3	0	0.0	0	0.0	4	1	25.0	1	25.0	1	25.0
2000	123	34	27.6	17	0	0.0	0	0.0	0	0.0	17	0	0.0	0	0.0	0	0.0
2001	143	26	18.2	22	2	9.1	0	0.0	0	0.0	4	0	0.0	0	0.0	0	0.0
2002	180	34	18.9	24	2	8.3	1	4.2	1	4.2	10	1	10.0	1	10.0	1	10.0
2003	160	63	39.4	20	0	0.0	0	0.0	0	0.0	43	8	18.6	4	9.3	1	2.3
2004	153	82	53.6	40	5	12.5	3	7.5	3	7.5	42	4	9.5	3	7.1	3	7.1
2005	200	120	60.0	55	2	3.6	1	1.8	1	1.8	65	2	3.1	2	3.1	2	3.1
2006	185	40	21.6	36	2	5.6	1	2.8	1	2.8	4	0	0.0	0	0.0	0	0.0
2007	148	38	25.7	29	3	10.3	2	6.9	1	3.4	9	2	22.2	2	22.2	2	22.2
2008	166	48	28.9	39	0	0.0	0	0.0	0	0.0	9	1	11.1	1	11.1	1	11.1
SUM	1728	543		320	20		10		7		223	20		15		12
MEAN	157	49	30.6	29	2	6.5	1	2.9	1	1.8	20	2	9.6	1	8.6	1	7.9

IR with IO/CT IR contributions with ionising imaging modalities, Ment dose mentioned, Topic dose the main topic, Reduct dose reduction, IO non-CT ionising, non-CT imaging modalities