Detailed Arterial Anatomy and Its Anastomoses of the Sphenoid Ridge and Olfactory Groove Meningiomas with Special Reference to the Recurrent Branches from the Ophthalmic Artery.

M Hiramatsu,M Kameda,K Nishi,T Hishikawa,K Kurozumi,Y Yamaoka,Y Takahashi,K Sugiu,S Murai,K Fujii,I Date,J Haruma,Y Shimazu

doi:10.3174/ajnr.a6790

Abstract

Detailed arterial anatomy of the sphenoid ridge and olfactory groove meningiomas is complicated due to the fine angioarchitecture and anastomoses between each feeder. Herein, we present details of the arterial anatomy and the relationships of feeders in these lesions. This study included 20 patients admitted to our department between April 2015 and March 2020. Conditions of subjects consisted of 16 sphenoid ridge meningiomas and 4 olfactory groove meningiomas. We mainly analyzed arterial anatomy using 3D rotational angiography and slab MIP images of these lesions. We also analyzed the anastomoses of each feeder. We found that 19 (95%), 15 (75%), and 15 (75%) lesions had feeders from the ophthalmic, internal carotid, and external carotid arteries, respectively. As feeders from the ophthalmic artery, recurrent meningeal arteries were involved in 18 lesions (90%). Fifteen lesions (75%) had anastomoses between each feeder. Most of the meningiomas in the sphenoid ridge and olfactory groove had feeders from the ophthalmic and internal carotid arteries. There were various anastomoses between each feeder. This is the first report to demonstrate the detailed arterial anatomy and frequency of recurrent branches from the ophthalmic artery and their anastomoses using detailed imaging techniques.

Highlights

BACKGROUND AND PURPOSEDetailed arterial anatomy of the sphenoid ridge and olfactory groove meningiomas is complicated due to the fine angioarchitecture and anastomoses between each feeder
The dural arterial anatomy of the sphenoid ridge and anterior skull base is very complicated because there are many fine arteries from the external carotid artery (ECA) and the ICA and ophthalmic artery (OphA).[1]
We investigated the details of the arterial anatomy of sphenoid ridge and olfactory groove meningiomas with special reference to the recurrent branches of the OphA and anastomoses between each feeder

Summary

MATERIALS AND METHODS

All procedures performed in studies involving human participants were carried out in accordance with the ethical standards of Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences’s institutional research committee (1911–023). We treated 29 patients with meningiomas in these regions, and we excluded 9 cases without 3D rotational DSA. LSOF), RMA passing through the medial part of the SOF (RMA-MSOF), TOB, and EtA. We distinguished the RMA-LSOF and RMA-MSOF using the coronal section of slab MIP images from rotational angiography data. We present representative cases of the RMA-LSOF (Fig 2), RMA-OC (Figs 3 and 4), TOB (Fig 4), and EtA (Fig 4). After obtaining 2D-DSA of the ECA and ICA, which are ipsilateral to the tumor, 3D-DSA with a 5-second protocol was performed on the branching feeders of the vessels. After obtaining volume-rendered images of 3D-DSA, slab MIP images were derived from rotational angiography data using a workstation to analyze details of the feeder anatomy. Feeders were divided into branches of the OphA, ICA, and ECA (Fig 1).

RESULTS

CONCLUSIONS

Limitations