Table 6. .
Ratio cortex/white matter, subgroup 4 (dementia)
| Left hemisphere | Right hemisphere | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Statistics | NI (SVD) |
Olea (SVD) |
Olea (Bayesian) |
Statistics | NI (SVD) |
Olea (SVD) |
Olea (Bayesian) |
||
| MTT | N | 56 | 56 | 56 | MTT | N | 56 | 56 | 56 |
| Mean | 0.834 | 0.873 | 0.738 | Mean | 0.843 | 0.886 | 0.768 | ||
| SD | 0.3346 | 0.4293 | 0.3823 | SD | 0.3511 | 0.2508 | 0.2914 | ||
| Median | 0.750 | 0.796 | 0.644 | Median | 0.760 | 0.842 | 0.674 | ||
| Range (Min, Max) | (0.39,2.01) | (0.43,3.57) | (0.33,3.15) | Range (Min, Max) | (0.15,2.36) | (0.33,1.64) | (0.27,1.60) | ||
| p-value | 0.1390 | 0.0069 | p-value | 0.3571 | 0.0465 | ||||
| rBF | N | 56 | 56 | 56 | rBF | N | 56 | 56 | 56 |
| Mean | 4.138 | 3.964 | 5.126 | Mean | 4.044 | 3.912 | 4.947 | ||
| SD | 1.9557 | 1.3210 | 2.3522 | SD | 2.4063 | 1.2439 | 2.1891 | ||
| Median | 3.660 | 3.878 | 4.690 | Median | 3.223 | 3.795 | 4.290 | ||
| Range (Min, Max) | (0.80,10.03) | (1.32,8.55) | (1.72,13.39) | Range (Min, Max) | (0.69,11.28) | (1.96,7.69) | (2.21,11.90) | ||
| p-value | 0.4057 | 0.0002 | p-value | 0.9807 | 0.0003 | ||||
| rBVc | N | 56 | 56 | 56 | rBVc | N | 56 | 56 | 56 |
| Mean | 3.275 | 3.614 | 3.614 | Mean | 3.184 | 3.613 | 3.588 | ||
| SD | 1.5061 | 1.2243 | 1.2243 | SD | 1.5261 | 1.2031 | 1.1935 | ||
| Median | 3.066 | 3.532 | 3.532 | Median | 2.903 | 3.358 | 3.332 | ||
| Range (Min, Max) | (0.97,7.61) | (1.75,8.20) | (1.75,8.20) | Range (Min, Max) | (0.41,7.43) | (2.11,8.46) | (2.11,8.46) | ||
| p-value | 0.0306 | 0.0313 | p-value | 0.0089 | 0.0130 | ||||
MTT, mean transit time; SD, standard deviation; SVD, singular value deconvolution; rBF, relative cerebral blood flow; rBV, relative cerebral blood volume.