Abstract
The carotid cistern, the chiasmatic cistern, and the cistern of the lamina terminalis lie rostral to the arachnoid membrane of Liliequist (membrane of Key and Retzius). Surgical observations regarding the cerebral spinal fluid (CSF) cisterns and their compartmental divisions are described elsewhere [3]. Figure 6.1 is a coronal computed tomography (CT) image (a cisternogram) that nicely illustrates the relationship of the internal carotid artery to the carotid cistern bounded laterally by the medial portion of the temporal lobe. Posteriorly the carotid cistern is separated from the interpeduncular cistern (see Chapter 8) by the arachnoid membrane of Liliequist; medially the carotid cistern joins the chiasmatic and lamina terminalis cisterns and superiorly it joins the sylvian cistern (fissure). In Fig. 6.1 note the bifurcation of the internal carotid artery into the middle cerebral artery (M-l segment) and the anterior cerebral artery (A-l segment).
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