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FIG 3. Case 2: 79-year-old woman with acute IVH, intraparenchymal hemorrhage, and SAH who had imaging on the day of ictus. MR and CT studies were obtained 2 hours apart. The FLAIR images show the IVH and SAH better than the T1- and T2-weighted images or the CT scans do.
A–C, FLAIR images (6700/150/2, TI = 2200) show large left parietooccipital intraparenchymal hemorrhage with intraventricular extension and associated SAH. The intraparenchymal hemorrhage is of mixed signal (mostly isointense). However, the IVH is well seen as hyperintense in the right occipital horn (arrow, A) and left body (arrow, B) of the lateral ventricles. SAH is well seen as hyperintensities in the right dorsal frontoparietal sulci (B and C).
D–I, T1-weighted (450/20/2) (D–F) and T2-weighted (2000/120/2) (G–I) images do not show the IVH and SAH as conspicuously as the FLAIR images do.
J–L, Noncontrast CT scans readily show the hyperdense intraparenchymal hemorrhage. However, the IVH and SAH are shown more conspicuously on the FLAIR images.
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