Biochemical and structural magnetic resonance imaging in chronic stroke and the relationship with upper extremity motor function

Table 1 Comparison between ipsilesional and contralesional cortical thickness and metabolite ratios in the improved, not improved, and all stroke groups

Improved N = 20	Ipsilesional		Contralesional		Paired t test
Improved N = 20	Mean	SD	Mean	SD	p value	sig.
Cortical thickness	2.87	0.45	2.89	0.48	0.854	NS
NAA/Cr ratio	1.83	0.28	1.86	0.37	0.750	NS
GLX/Cr ratio	0.25	0.15	0.25	0.16	0.980	NS
Not improved,N= 30
Cortical thickness	2.48	0.50	2.77	0.46	0.002	HS
NAA/Cr ratio	1.54	0.29	1.86	0.24	0.000	HS
GLX/Cr ratio	0.21	0.17	0.34	0.20	0.000	HS
All stroke group,N= 50
Cortical thickness	2.63	0.50	2.81	0.47	0.011	S
NAA/Cr ratio	1.65	0.31	1.86	0.30	0.001	HS
GLX/Cr ratio	0.23	0.16	0.31	0.19	0.009	HS

Paired t test, S significant, HS highly significant, NS non-significant, NAA/Crn-acetylaspartate/creatine ratio, GLX/Cr glutamate/creatine ratio