Table 1.

Main information on the subjects and the results obtained during the study.

Subject			Body part being scanned	STAI			Respiratory rate			Comments
ID	Sex	Age		X11	X12	ΔX121	meanRR1 (rpm*)	meanRR2 (rpm*)	ΔRR21 (rpm*)
1	M	74	head	32	38	6	12.76	10.57	−2.19
2	M	30	LS	34	34	0	17.06	14.20	−2.86
3	F	46	CS	34	26	−8	17.86	17.43	−0.43
4	M	19	knee	38	39	1	17.32	14.87	−2.45
5	F	36	LS	34	34	0	21.51	22.20	0.69
6	M	51	LS	31	28	−3	14.44	15.15	0.71
7	F	57	CS	42	37	−5	18.41	12.73	−5.68	Anxiety during MRI examination
8	F	56	CS	32	33	1	20.35	20.85	0.5
9	F	64	CS	39	31	−8	16.43	16.36	−0.07
10	F	62	CS	38	37	−1	22.36	19.51	−2.85
11	F	58	LS	69	45	−24	22.43	16.85	−5.58
12	F	24	LS	36	52†	16	26‡	17§	−9	Strong anxiety, subject withdrew from MRI examination
13	F	74	LS	42	27	−15	12.84	12.42	−0.42
14	F	34	LS	35	51	16	20.38	19.28	−1.1	Anxiety, subject was thinking of stopping MRI examination
15	M	81	head	38	39	1	23.13	16.62	−6.51
16	M	50	LS	46	26	−20	27.54	27.69	0.15	Anxiety, subject took sedatives the day before MRI examination
17	F	26	CS	20	25	5	19.69	16.92	−2.77
18	F	81	LS	62	65	3	19.69	19.79	0.1	Anxiety during MRI examination
19	M	43	CS	33	39	6	19.86	18.84	−1.02
20	M	57	CS	37	31	−6	17.32	17.18	−0.14
21	F	39	head**	30	23	−7	28.31	22.08	−6.23
22	F	42	CS	26	23	−3	20.51	19.66	−0.85
23	F	16	shoulder	32	29	−3	14.76	15.97	1.21
24	F	67	LS	42	36	−6	21.63	18.69	−2.94	Anxiety during MRI examination
25	F	28	head**	36	33	−3	21.10	14.98	−6.12
26	F	48	CS	34	32	−2	17.11	17.17	0.06
27	F	43	head**	38	37	−1	16.03	16.23	0.2
28	F	31	head	40	44	4	18.57	14.78	−3.79
29	F	47	CS	33	53	20	18.06	20.29	2.23	Anxiety, subject was thinking of stopping MRI examination
30	F	59	knee	32	22	−10	16.05	19.32	3.27
31	M	23	knee	35	30	−5	18.60	17.59	−1.01
32	M	53	knee	41	41	0	22.19	22.23	0.04
33	F	50	foot	22	27	5	20.23	21.55	1.32	Anxiety during MRI examination
34	F	41	head**	37	35	−2	19.39	15.66	−3.73
35	F	38	LS	37	20	−17	19.05	17.00	−2.05
36	M	60	LS	29	75†	46	30.18††	19§	−11,18	Panic, subject interrupted MRI examination
37	M	57	LS	30	34	4	14.44	14.77	0.33
38	M	32	LS	35	40	5	12.85	13.28	0.43
39	M	65	LS	21	22	1	16.55	16.59	0.04
40	F	68	LS	39	21	−18	25.44	22.28	−3.16
41	F	78	LS	33	30	10	15.01	15.17	0.16
42	F	77	LS	42	44	2	15.27	16.81	1.54
43	F	52	LS	63	48	−15	13.19	13.33	0.14
44	F	54	LS	37	52†	15	28‡	18§	−10	Strong anxiety, subject withdrew from MRI examination

*Respiration per minute.

^†Value obtained with the STAI questionnaire just after resignation or interruption of the MRI examination.

^‡Value measured with the capnograph just after resignation from the MRI examination.

^§Value measured with the capnograph after the subject calmed down and RR stabilised.

**Administration of contrast agents.

^††Mean value measured with the fibre-optic sensor system within 1 minute after the MRI examination beginning.