Table 1: Incidence of penumbra.

ModelGroupNumberTime pointIncidence of penumbra

Sphere3 μm MB + US19244/14 (28.6%)
SphereControl14242/14 (14/3%)
ClotControl23242/23 (8.7%)
SphereControl741/7 (14.3%)

Summary of penumbra incidence by group. No significant differences in incidence were noted by model ( 𝑃 = 0 . 6 2 ), time point ( 𝑃 = 1 . 0 ), or treatment ( 𝑃 = 0 . 6 5 ).