. 2013 Dec 31;8(12):e83427. doi: 10.1371/journal.pone.0083427

Table 2. Characteristics of the MR Examinations.

	Short-Bore MR Group	Open MR	P Value
Number of MR examinations^a	48	55	.9
Cervicothoracic spine	18 (37.5)	21 (38.2)
Thoracolumbar spine	30 (62.5)	34 (61.8)
Number of MR sequences
T1w/T2w sagittal	48	55	.9
Cervicothoracic spine	18 (37.5)	21 (38.2)
Thoracolumbar spine	30 (62.5)	34 (61.8)
T2w axial^b	68	76	.9
Cervicothoracic spine	19 (28)	22 (28.9)
Thoracolumbar spine	49 (72)	54 (71.1)
Scan duration (min)	19.8 (SD, 8.5)	31.7 (SD, 21.6)	.001
Cervicothoracic spine	19 (SD, 5.3)	30.1 (SD, 7.8)	.001
Thoracolumbar spine	17.5 (SD, 7.1)	25.8 (SD, 10.2)	.001
Whole spine	37 (SD, 6.8)	70 (SD, 42)	.2
Anxiety^c	58.1 (SD, 33.9)	50.3 (SD, 30.6)	.3
Cervicothoracic spine	58.6 (SD, 34.9)	48.1 (SD, 30.1)	.4
Thoracolumbar spine	55.8 (SD, 32.8)	51.8 (SD, 31.9)	.7
Whole spine	71 (SD, 44.8)	49 (SD, 30.5)	.4
Noise^c	57.5 (SD, 21.3)	65.9 (SD, 23.1)	.08
Cervicothoracic spine	52.2 (SD, 24)	62.5 (SD, 25)	.3
Thoracolumbar spine	58.5 (SD, 18.3)	71.6 (SD, 21.1)	.02
Whole spine	69.8 (SD, 29.2)	47.7 (SD, 18.6)	.2
Pain^c	19.8 (SD, 27.5)	31 (SD, 32.5)	.08
Cervicothoracic spine	20 (SD, 29.7)	27.6 (SD, 28.7)	.5
Thoracolumbar spine	21.2 (SD, 28.3)	28.6 (SD, 33.8)	.4
Whole spine	10.5 (SD, 15.8)	51.2 (SD, 33.7)	.06

Data are number (%) or arithmetic mean (SD). Percentages may not total 100% because of rounding.

^a For the analysis, MR imaging of the whole spine was categorized as imaging of the cervicothoracic and the thoracolumbar spine.

^b The number of axial sequences and the segment of the vertebral column that was imaged with axial sequences were chosen according to the medical indication.

^c The pain, noise, and anxiety levels patients experienced during MR imaging were assessed directly after the scan using horizontal and nonmarked (0–100 mm) visual analogue scales.