Table 2 Compared the IVIM parameter derived from multiple b-value DWI among groups with different low b-value distribution and NEX in brain

0.714 ± 0.028

5.050 ± 0.887^a

6.558 ± 0.900^a

0.718 ± 0.034

4.934 ± 0.777^a

6.505 ± 0.991^a

0.716 ± 0.034

6.105 ± 0.996^b

7.484 ± 0.766^b

0.718 ± 0.031

5.841 ± 0.645^b

7.643 ± 0.813^b

0.718 ± 0.033

5.817 ± 0.780^b

7.550 ± 1.007^b

0.718 ± 0.031

6.241 ± 0.734^b

7.533 ± 1.112^b

0.806 ± 0.039

8.180 ± 0.895^a

9.394 ± 1.569^a

0.807 ± 0.037

8.376 ± 0.874^a

9.259 ± 1.233^a

0.840 ± 0.041

9.487 ± 1.317^b

11.066 ± 1.517^b

0.841 ± 0.054

9.794 ± 1.305^b

11.025 ± 1.926^b

0.833 ± 0.029

9.854 ± 1.291^b

11.303 ± 1.602^b

0.836 ± 0.051

9.496 ± 1.045^b

11.308 ± 1.285^b