Predicting liver metastasis of gastrointestinal tract cancer by diffusion-weighted imaging of apparent diffusion coefficient values

Table 2 Changes in apparent diffusion coefficient values before and after chemotherapy treatment between the effective and ineffective groups

Groups	Before treatment	After 2 wk of treatment	After 12 wk of treatment	After 2 wk of treatment		After 12 wk of treatment
				t value	P value	t value	P value
Effective group	1.01 ± 0.06	1.26 ± 0.11	1.34 ± 0.18	17.047	0.000	14.86	0.000
Ineffective group	1.24 ± 0.08	1.26 ± 0.05	1.22 ± 0.17	1.931	0.055	0.97	0.334
t value	2.747	1.491	1.783	/	/	/	/
P value	0.007	0.138	0.077	/	/	/	/