FIG. 2.

(A) Coronal susceptibility-weighted imaging (SWI) minimum intensity projection images of three rats that underwent five imaging time points (each row represents different animals). Hypointensities along both the left and right side brain parenchymal injury sites were present in the immediate acquisition. The hypointensities became smaller or completely absent in the 12 h, 24 h, and 48 h acquisitions. In the 125 h acquisitions, the hypointensities were again present in a similar shape, extent, and intensity as at the immediate time point. In the second animal, at the larger gauge injury track (left), a relatively large circumscribed blood collection was formed showing no noticeable change over time. (B) Coronal maximum intensity projection images of the same rats' filtered phase images. Hyperintensities consistent with phase alteration at lesion sites are more pronounced at the immediate and 125 h imaging time point than at the 12 h, 24 h, or 48 h time points.