A pneumatized anterior clinoid mimicking an aneurysm on MR imaging

Author:

Gean Alisa D.,Pile-Spellman John,Heros Roberto C.

Abstract

✓ The advent of magnetic resonance (MR) imaging has marked a new era in neuroimaging — particularly in terms of diminishing the need for more invasive diagnostic procedures. A cautionary note should be sounded, however, about an important limitation of standard spin-echo MR studies. Two patients were referred for angiography because MR imaging indicated the presence of a “paraclinoid aneurysm.” In retrospect, these findings were due instead to a pneumatized anterior clinoid. Angiography could have been avoided had this pitfall been recognized, and had a gradient-echo flow-imaging protocol been utilized. This latter approach (which does not replace spin-echo imaging) is more sensitive to flowing blood and thus allows differentiation of an air space from a nonthrombosed aneurysm.

Publisher

Journal of Neurosurgery Publishing Group (JNSPG)

Cited by 21 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Assessment of the Anterior Clinoid Process and Optic Strut in Chiari Malformation Type I: A Computed Tomography Study;Journal of Neurological Surgery Part B: Skull Base;2023-04-19

2. Change in the Location of the Optic Strut Relative to the Anterior Clinoid Process Pneumatization;Journal of Craniofacial Surgery;2022-07-29

3. CSF leak post-anterior clinoidectomy: Case report and technical nuances;Interdisciplinary Neurosurgery;2020-06

4. Variantes, artéfacts et pièges;Neuro-Imagerie Diagnostique;2018

5. Paraclinoid carotid aneurysms;Journal of Clinical Neuroscience;2011-01

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