| |
Low-grade tumor
|
High-grade tumor
| |
|---|
|
Variable
|
n
|
Range
|
Mean
|
SD
|
n
|
Range
|
Mean
|
SD
|
PValue
|
|---|
|
rCBV
|
29
|
0.00-13.61
|
2.09
|
3.17
|
95
|
0.51-19.18
|
5.75
|
4.10
|
<0.0001
|
|
rADC
|
30
|
0.81-2.55
|
1.74
|
0.44
|
94
|
0.43-2.63
|
1.17
|
0.38
|
<0.0001
|
|
NAA/Cra
|
23
|
0.00-11.73
|
2.39
|
3.00
|
64
|
0.00-42.26
|
7.28
|
9.12
|
0.005
|
|
Cho/Crb
|
24
|
0.95-21.43
|
3.56
|
5.34
|
70
|
0.81-77.46
|
7.95
|
14.88
|
0.008
|
|
Lipids
|
26
|
N/A
|
N/A
|
N/A
|
83
|
N/A
|
N/A
|
N/A
|
<0.0001
|
|
NAA/Crb
|
24
|
0.00-11.61
|
1.53
|
2.28
|
71
|
0.00-20.36
|
1.49
|
3.15
|
NS
|
|
Cho/Cra
|
23
|
0.07-9.30
|
2.00
|
2,13
|
65
|
0.00-30.15
|
3.24
|
4.91
|
NS
|
|
Cho/H2Oa
|
19
|
3.02×10−4-5.88×10−3
|
6.60×10−4
|
1.29×10−3
|
63
|
0.00-6.18×10−3
|
4.21×10−3
|
8.03×10−4
|
NS
|
|
NAA/H2Oa
|
20
|
0.00-3.28×10−3
|
6.67×10−4
|
7.85×10−4
|
63
|
0.00-1.73×10−2
|
1.00×10−3
|
2.20×10−3
|
NS
|
|
Cho/H2Ob
|
17
|
2.10x10−4-3.98×10−3
|
8.39×10−4
|
9.00×10−3
|
64
|
4.74×10−4-8.27×10−3
|
8.34×10−4
|
1.23×10−3
|
NS
|
|
NAA/H2Ob
|
18
|
0.00-1.01×10−3
|
3.12×10−4
|
2.74×10−3
|
67
|
0.00-6.86×10−3
|
3.98×10−4
|
1,18×10−3
|
NS
|
|
Lactate
|
26
|
N/A
|
N/A
|
N/A
|
83
|
N/A
|
N/A
|
N/A
|
NS
|
- Cho, choline; Cr, creatine; NAA, N-acetyl-aspartate; N/A, not available (qualitative variables); NS, not significant; rADC, relative apparent diffusion coefficient; rCBV, relative cerebral blood volume.
- aTE = 23 ms.
- bTE = 144 ms.
