Difference in CBF between right and left hemispheres calculated from the clinical CT images only, for ROIs located in located in grey or white matter in the 2 hemispheresa
| Injection Method | Difference in CBF between Left and Right Hemispheres (mL/100 g/min) | |
|---|---|---|
| White Matter | Grey Matter | |
| 6 mL/s 50% | ||
| Mean | 2.04 | 1.98 |
| SD | 6.03 | 6.77 |
| Overall ρ | 0.92 | |
| Overall r | 0.92 | |
| 3 mL/s 100% | ||
| Mean | 0.75 | 0.26 |
| SD | 7.86 | 9.49 |
| Overall ρ | 0.84 | |
| Overall r | 0.84 | |
| 3 mL/s 67% | ||
| Mean | 0.73 | 0.61 |
| SD | 9.24 | 6.74 |
| Overall ρ | 0.90 | |
| Overall r | 0.90 | |
a Mean and SD values are given in milliliters/100 g/min. The overall CCCs and the Pearson correlation coefficients between the left and right hemispheres (without grey/white matter discrimination) are also included and were found to be identical, implying no underlying bias due to position of the catheter or otherwise.