Table 2.
Perfusion Signal Difference using θ = ±60°
Subject |
Perfusion Signal Difference (%)
|
|||||||
---|---|---|---|---|---|---|---|---|
θ = +60° | θ = −60° | |||||||
GM
|
WM
|
GM
|
WM
|
|||||
Left | Right | Left | Right | Left | Right | Left | Right | |
1 | 0.10 | 0.75 | −0.07 | 0.07 | 0.84 | 0.09 | 0.03 | 0.02 |
2 | −0.05 | 1.51 | −0.03 | 0.28 | 1.31 | 0.04 | 0.20 | 0.13 |
3 | 0.03 | 0.71 | −0.02 | 0.11 | 0.81 | 0.01 | 0.33 | 0.05 |
4 | −0.02 | 0.68 | 0.03 | 0.19 | 0.73 | 0.05 | 0.05 | −0.03 |
5 | 0.08 | 0.66 | 0.05 | 0.20 | 0.80 | 0.12 | 0.17 | 0.04 |
6 | 0.13 | 0.85 | −0.07 | 0.12 | 1.09 | 0.08 | 0.18 | 0.04 |
7 | 0.12 | 1.46 | 0.04 | 0.11 | 1.22 | 0.28 | 0.17 | 0.05 |
8 | 0.08 | 0.83 | 0.03 | 0.09 | 0.75 | 0.11 | 0.13 | 0.01 |
9 | 0.02 | 0.74 | 0.00 | 0.10 | 0.92 | 0.12 | 0.13 | 0.02 |
10 | 0.14 | 0.76 | 0.04 | 0.14 | 0.77 | 0.24 | 0.05 | −0.04 |
11 | 0.14 | 0.61 | 0.03 | 0.04 | 0.81 | 0.21 | 0.14 | −0.02 |
12 | 0.06 | 0.92 | 0.06 | 0.14 | 1.04 | 0.52 | 0.06 | −0.02 |
13 | 0.08 | 0.93 | 0.04 | 0.21 | 0.99 | 0.20 | 0.14 | 0.03 |
14 | 0.03 | 0.42 | 0.11 | 0.06 | 0.44 | 0.18 | 0.00 | −0.02 |
Mean±SD | 0.07±0.06 | 0.85±0.30 | 0.02±0.05 | 0.13±0.07 | 0.89±0.22 | 0.16±0.13 | 0.13±0.08 | 0.02±0.04 |
All values were derived from equally-sized ROIs placed either in the left or the right brain hemisphere. Negative values are due to small perfusion signal relatively to noise level.