Fig. 2
From: Diagnosis of a subarachnoid hemorrhage with only mild symptoms using computed tomography in Japan
The slice is at level of the midbrain (mesencephalon) that traverses the infundibulum of third ventricle, interpeduncular cistern. In a, there appears to be hyperattenuating blood in the medial portion of the left Sylvian fissure and the anterior interhemispheric fissure, and shows mild dilation of the temporal horns of the lateral ventricles (looks like a moustache). In the center of the suprasellar cistern is CSF (hypoattenuating) in the dilated infundibulum of the third ventricle. These CT findings become clear in comparison to the previous CT (b). The SAH seen is in proximity to this left ACA aneurysm. An arrow indicates the temporal horns of the lateral ventricles. Arrowheads indicate hyperattenuating blood. An asterisk indicates CSF (hypoattenuating) in the dilated infundibulum of the third ventricle