FIG 3. Low-volume injection of blood to induce SAH.

A and B, Sagittal (A) and axial (B) FLAIR (10,000/150/2500) MR images show hyperintense signal throughout the subarachnoid space, consistent with hemorrhage.

C, CT image shows a linear area of increased attenuation (arrowhead), which may be due to SAH or streak artifact.