Relationship between the benefits of paraspinal mapping and diffusion tensor imaging and the increase of decompression levels determined by conventional magnetic resonance imaging in degenerative lumbar spinal stenosis

Table 3 Average decompression levels between two methods

Group (n)	Determination by MRI + NE	Determination by MRI + (PM or DTI)	p value
1 (30)	1.77 ± 0.430	1.400 ± 0.498	0.001
2 (30)	2.67 ± 0.547	2.000 ± 0.455	0.000
3 (20)	3.15 ± 0.813	2.300 ± 0.571	0.000
Total (80)	2.45 ± 0.810	1.850 ± 0.618	0.000

DTI diffuse tensor imaging, PM paraspinal mapping, 1 two levels, 2 three levels, 3 four levels

ISSN: 1749-799X