Table 2.

Sites with the contamination rate of ≥1 CFU/cm², either on blood or on chocolate agar.

Sample number	Sample source	May experiment		June experiment
		Contamination rate chocolate agar	Contamination rate blood agar	Contamination rate chocolate agar	Contamination rate blood agar
2	MRI head support	0.6	2	0.4	0.2
4	Head pillow of CT CANON	0.6	0	2.2	0.4
6	Centre of patient table CT CANON	1.6	0.4	8.8	10
11	Keyboard of CT CANON	2	0.6	6	4
14	LT side gantry control panel CT CANON	0.4	1	0	0
15	Primax X-ray portable touch screen	0	0.6	1	6
25	Keyboard of US for general use	1.2	1.4	2.4	1.2
30	RT side of MRI patient table	4.8	1	0	0
33	Keyboard in CT CANON control room	3	0	0.6	1.6
34	CT Siemen's keyboard control room	4	8	6	6
44	Keyboard of interventional US	1	0.6	0.2	0
48	Patient leg support of CT semen's	0.2	0	0.6	1.2
51	Large touch screen for US for general use	0	0	12.8	0.4
52	Table of US for general use in control room	4.8	1.8	1.6	1.4
56	Hand of US for general use	1	0.2	0.8	0.4
58	Mouse of US for general use in control room	2.2	0.8	0.4	0.2
59	Keyboard in control room of US for general use	3.4	0.6	1	0.2
60	RT side of X-ray patient table	0.2	0	2.4	0.8
63	Hand of carestearm portable	8	0.2	0	0.8
64	Carestream touchscreen portable	0.2	0.2	5.2	5
66	LT side of patient table CT CANON	8	8	1.6	1.2
67	Touch screen of injecter in CT CANON control room	0.2	0	1.8	1.6
72	Knee coil	2.4	3	0.6	0.4
73	Centre of MRI patient Table 2	1.4	0	2.8	2.4
74	RT side of MRI patient Table 2	2.8	4.8	3	0.6
75	LT side of MRI patient Table 2	5.8	4.2	8.4	6
77	Keyboard of X-ray in control room	3.2	3.4	6	8
79	Patient leg support 1	2.2	2.4	0.4	0.4
80	Patient leg support 2	2	3.4	8	5.4