16 Anterior Communicating Artery Aneurysms Microsurgical Anatomy The A1 segment begins at the terminal bifurcation of the internal carotid artery (ICA) and ends at the anterior communicating artery (ACoA) (Fig….
17 Ophthalmic Artery Aneurysms Microsurgical Anatomy Arterial Anatomy Ophthalmic artery (OphA) aneurysms originate from the ophthalmic segment of the internal carotid artery (ICA). Simple classifications such as Rhoton’s describe only…
20 Posterior Inferior Cerebellar Artery Aneurysms Microsurgical Anatomy Vertebral artery originates from the subclavian artery, ascends through the transverse processes of the upper six cervical vertebrae, swings behind the lateral…
15 Middle Cerebral Artery Aneurysms Microsurgical Anatomy Segmental anatomy is defined by the middle cerebral artery’s (MCA) complex curvature rather than its branches. The M1 segment begins at the terminal…
19 Basilar Artery Bifurcation Aneurysms Microsurgical Anatomy The basilar artery terminates in a quadrifurcation from which two posterior cerebral arteries (PCAs) and two superior cerebellar arteries (SCAs) originate (Fig. 19.1)….
14 Posterior Communicating Artery Aneurysms Microsurgical Anatomy The posterior communicating artery (PCoA) bisects the supraclinoid internal carotid artery (ICA) into an ophthalmic segment from the distal dural ring to the…
18 Pericallosal Artery Aneurysms Microsurgical Anatomy The anterior cerebral artery (ACA) distal to the anterior communicating artery (ACoA) is divided into four segments (Fig. 18.1). The A2 segment, also called…
6 Permanent Clipping Clip Application Applying a permanent clip on an aneurysm neck is like landing an airplane, requiring just the right “yaw, pitch, and roll” (Fig. 6.1A). Pitch refers…
2 Subarachnoid Dissection The Subarachnoid Cisterns The subarachnoid space is the arena of aneurysm surgery because it houses the brain’s arteries and provides a navigable labyrinth to deep targets that…
13 Far-Lateral Approach Position The far-lateral approach is also called the lateral suboccipital approach, the extreme lateral approach, and the extreme lateral inferior transcondylar exposure (ELITE). A modified park-bench or…
