Localization and Treatment of Unruptured Paraclinoid Aneurysms: A Proton Density MRI-based Study.
10.7461/jcen.2015.17.3.180
- Author:
Seon Jin YOON
1
;
Na Young SHIN
;
Jae Whan LEE
;
Seung Kon HUH
;
Keun Young PARK
Author Information
1. Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea. kypark78.md@gmail.com
- Publication Type:Original Article
- Keywords:
Aneurysm;
Internal carotid artery;
Magnetic resonance imaging
- MeSH:
Aneurysm*;
Angiography;
Carotid Artery, Internal;
Humans;
Magnetic Resonance Imaging;
Protons*
- From:Journal of Cerebrovascular and Endovascular Neurosurgery
2015;17(3):180-184
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: The purpose of this study was to evaluate the usefulness of proton density magnetic resonance (PD MR) imaging for localization of paraclinoid internal carotid artery aneurysms. MATERIALS AND METHODS: From April 2014 to April 2015, 76 unruptured paraclinoid aneurysms in 66 patients were evaluated using PD MR and angiography (CT/MR angiography or digital subtraction angiography). The locations (extradural, transdural, intradural) in relation to the distal dural ring (DDR) and projection (superior, inferior/posterior, medial, lateral) of the aneurysms were assessed and compared. RESULTS: The most common location of paraclinoid aneurysms was extradural (n = 48, 63.2%), followed by intradural (n = 18, 23.7%), and transdural (n = 10, 13.2%). In the medial projection group (n = 49, 64.5%), 31 were extradural (63.3%), 5 were transdural (10.2%), and 13 were intradural (26.5%). In the inferior/posterior projection group (n = 19, 25.0%), there were 14 extradural (73.7%), 4 transdural (21.0%), and 1 intradural (5.3%). In the superior (n = 4, 5.3%)/lateral (n = 4, 5.3%) projection groups, there were 0/3 extradural (0/75.0%), 1/0 transdural (25.0/0%), and 3/1 intradural (75.0/25.0%). CONCLUSION: PD MR showed sufficient contrast difference to distinguish paraclinoid aneurysms from surrounding dural structures.
