Table 5.

The median number of voxels that have elevated CNI, the median CNI value and the maximum CNI value within the region having CNI >2

Grade	Voxels CNI >2	Voxels CNI >3	Median CNI for CNI >2 voxels	Max CNI value
ACII	20	7	2.9	5.7
N = 14	4–55	0–37	2.3–3.7	3.5–9.5
OAII	15	7	2.9	6.1
N = 13	5–47	0–32	2.4–4.2	3.5–9.2
ODII	22	10	2.7	6.4
N = 20	1–72	0–54	2.3–6.3	2.8–16.6
III	27	15	3.1	7.1
N = 25	2–69	0–58	2.2–5.6	3.5–18.7
IV	33	20	3.3	7.4
N = 40	5–84	0–79	2.3–9.4	3.0–27.3

Values are given as median and range to show their large variability. The median ratio of the number of voxels with CNI >2 to the number of voxels within the T2 lesion that were included in the PRESS volume were 0.55, 0.47, and 0.97 for the ACII, OAII, and ODII subtypes and were 0.75 and 0.62 for the grade III and grade IV lesions