FIG 1. A–F, T1-weighted (A), SD-weighted (B), T2-weighted (C), FLAIR (D), and GRE (E) MR images and CT scan (F) of SAH at the level of the cervicomedullary junction in the same canine. Blood is seen on the MR images (obtained 2 hours after ictus) as an area of high signal obscuring the CSF-brain interface on the left (arrows). This is most conspicuous on the FLAIR image (D) and is not seen to any significant degree on the T2-weighted image (C) or the CT scan (F), performed 1 hour later.