3 This segmentation schematic provides an endoscopically relevant division of the ICA. The divisions include parapharyngeal, petrous, paraclival, parasellar, paraclinoid, and intradural segments. The segmental divisions of the ICAs are visualized from an endoscopic perspective within Model 4. The ICAs has been divided into seven segments (C1-7) from proximal to distal within the most recent classification system, see Model 3. These annotations are demonstrated on Model 3. The ACAs and MCAs have been divided into segments (A1 to A5 and M1 to M4, respectively). The segmental division of the major anterior circulation vessels provides important insight into the associated branches and pathologies that arise along these distributions. 1 Multiple perforator arteries emanating from the terminal ICAs, MCAs, and ACAs have a large perfusion zone along the basal nuclei and basal forebrain. This relevant cerebrovascular anatomy includes segmental divisions of the internal carotid arteries (ICAs), middle cerebral arteries (MCAs), and anterior cerebral arteries (ACAs), and subsequent branching arteries with corresponding perfusion zones. The anterior arterial circulation is the distal distribution of blood flow through the carotid system.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |