Table 2.

Metabolical Abnormalities in Pathological MRSI Voxels: Mean Percentage and (Range) of Voxels with Abnormality

	NAA ↓	NAA ↑	Cr ↓	Cr ↑	Cho ↓	Cho ↑	NAA/Cr ↓	NAA/Cr ↑	NAA/Cho ↓	NAA/Cho ↑
Malformation	13.0 (0–66.7)	0.4 (0.0–2.2)	5.2 (0.0–33.3)	3.0 (0.0–11.1)	3.4 (0.0–27.0)	15.2 (0.0–77.8)	13.3 (0.0–49.1)	2.2 (0.0–10.0)	10.6 (0.0–57.6)	3.3 (0.0–13.3)
Perilesional Zone	3.4 (0.0–15.0)	1.0 (0.0–7.6)	3.0 (0.0–18.3)	0.7 (0.0–4.8)	1.1 (0.0–10.0)	1.0 (0.0–7.1)	3.2 (0.0–11.4)	8.4 (0.0–42.1)	1.9 (0.0–7.8)	1.2 (0.0–6.4)

Percentage of voxels with abnormality, number of all voxels of all subject with e.g. NAA↓ in a region, e.g. malformation, expressed as percentage of all voxels of all subjects in the region

↓, below the 95 % prediction interval; ↑, above the 95 % prediction interval; NAA N-acetylaspartate; Cr creatine/phosphocreatine; Cho choline compounds Definition of “perilesional” see text