Table 2 .
Location of contrast staining.
| Staining locations | |||||
| Anterior circulation | Posterior circulation | ||||
| Gray matter | White matter | Gray matter | White matter | ||
| 31& | 7* | 6# | 0 | ||
| Deep gray | Cortex | Deep gray | Cortex | ||
| 15 | 25 | 3 | 6 | ||
|
&: Six patients had deep gray staining without cortical staining in the anterior circulation, 0 had staining of deep gray without cortical stain in the posterior circulation; *: All patients with white matter staining also had gray matter staining; #: One patient with posterior cortex stain also had anterior gray stain. Review of the imaging demonstrates the posterior cortex stain to be in the MCA-PCA watershed zone. | |||||