Table 1.
Macrospheres versus Suture Technique.
| Number of Macrospheres | Vessel Diameter (μm) | Macrosphere Diameter (μm) | Occluded Vessel Territories | Collaterals via | Vascular Volume (mm3) | ||
|---|---|---|---|---|---|---|---|
| Macrospheres | Anterior Cerebral Artery | 7 | 186 ± 6* | 334 ± 11 | No | Contralateral Hemisphere | 10.9 ± 0.9 |
| Middle Cerebral Artery | 7 | 203 ± 13 | 335 ± 7 | Partial | Thalamo-striatal Arteries | 5.5 ± 1.3* | |
| Posterior Cerebral Artery | 5 | 175 ± 11* | 333 ± 4 | No | Contralateral Hemisphere | 11.4 ± 0.9 | |
| Circle of Willis | 16 | 205 ± 16 | 333 ± 8 | Partial | Unknown | 8.2 ± 0.8 | |
| Suture | Occluded Hemisphere | Partial | Unknown | 4.02 ± 1.6* | |||
| Non-Occluded Hemisphere | No | 11.5 ± 1.1 | |||||
| Controls | 11.6 ± 1.2 | ||||||
The vessel diameter shows significant differences between the anterior and posterior versus the middle cerebral artery and the circle of Willis (* p < 0.002). The macrosphere diameter is not related to the occluded vessel diameter (p < 0.2) but the diameter of the macrospheres shows significantly higher values than the occluded vessel (p < 0.001). Macrospheres in the middle cerebral artery showing the same vascular volume fraction as the suture technique.