Table 2 Brain metabolite concentrations obtained in fast MRSI techniques

EPSI

18/1550

GM in frontal lobe left: NAA:11.10 ± 0.32, tCho:2.04 ± 0.16, Glx:10.22 ± 0.53

WM in frontal lobe left: NAA:9.51 ± 0.27, tCho:1.95 ± 0.16, Glx:6.43 ± 0.34

16

whole brain/ 28 × 28 × 18 cm³/1 cm³/ 20 HCs/ 3 T

[82]

EPSI with OVS

15/2000

GM: NAA:8.6 ± 0.7, Glu:12.8 ± 1.5, tCho:1.4 ± 0.2.

WM: NAA:7.2 ± 0.7, Glu:7.0 ± 1.1, tCho:1.4 ± 0.2

8.5

WM and GM/ 26 cm/ 1 cm³/ 9 HCs/ 3 T

[53]

3D

GRAPPA-EPSI

70/1710

^aNAA: 595 ± 37.9, Cr: 346 ± 23.9

Cho: 100 ± 9.7

16

Whole brain/ 28 × 28 × 18 cm³/ 0.31 cm³/ 25 patients with mild traumatic brain injuries (mTBI) & 25 HCs/ 3 T

[84]

GRAPPA-EPSI

15/2000

GM: NAA:15.36 ± 2.62, Glx:18.40 ± 3.19, Cho:3.19 ± 0.58

WM: NAA: 14.46 ± 1.79, Glx: 11.01 ± 3.20, Cho:3.19 ± 0.45

1.5

WM and GM/ 24 cm/ 0.85 cm³/ 5 HCs/ 3 T

[89]

3D SENSE-EPSI

15/2000

NAA:9.5 ± 4.3, Cho:1.4 ± 0.9, Glu:8.8 ± 5.2, Cr:7.2 ± 2.8

8.5

WM and GM/ 24 × 24 × 10 cm/ 0.7 cm³/ HCs/ 3 T

[49]

3D EPSI-MRSI

70/1710

^bGM: NAA:4948 ± 75, Cr: 3461 ± 53,

Cho: 544 ± 13 in Occipital

WM: NAA:5165 ± 81, Cr: 3048 ± 48,

Cho: 671 ± 12 in Occipital

NA

WM and GM/ 28 × 28 × 18 cm³/ 0.31 cm³/ 88 HCs/ 3 T

[79]

3D PRESS-MRSI

144/1500

Concentration for age groups (25–32)

NAA/Cr:1.8 in Frontal lobe

NAA/Cr : 1.9 in Occipital lobe

13

Whole brain/ 32 cm /1 cm³/ 8 HCs/ 1.5 T

[61]