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Supraclinoid internal carotid artery fenestration from which the posterior communicating artery arising with infundibular dilatation at its origin diagnosed by magnetic resonance angiography.鞍上颈内动脉开窗，磁共振血管造影诊断出后交通动脉由此发出且其起始处有漏斗状扩张。
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本文引用的文献

1
Variations of the posterior cerebral artery diagnosed by MR angiography at 3 tesla.3特斯拉磁共振血管造影诊断的大脑后动脉变异
Neuroradiology. 2016 Feb;58(2):141-6. doi: 10.1007/s00234-015-1614-5. Epub 2015 Nov 9.
2
Infundibular dilatation of the posterior communicating artery in a defined population.
Ann Anat. 2015 Jan;197:50-8. doi: 10.1016/j.aanat.2014.10.003. Epub 2014 Oct 22.
3
Management of aneurysms at the origin of duplicated middle cerebral artery: series of four patients with review of the literature.双重大脑中动脉起源处动脉瘤的处理：4 例患者系列及文献复习。
World Neurosurg. 2013 Dec;80(6):e313-8. doi: 10.1016/j.wneu.2012.10.004. Epub 2012 Oct 5.
4
Duplicate origin and fenestration of the middle cerebral artery on MR angiography.磁共振血管造影显示大脑中动脉重复起源及开窗畸形。
Surg Radiol Anat. 2012 Jul;34(5):401-4. doi: 10.1007/s00276-012-0936-9. Epub 2012 Jan 24.
5
A rare case of supraclinoid internal carotid artery (ICA) fenestration in combination with duplication of the middle cerebral artery (MCA) originating from the ICA fenestration and an associated aneurysm.罕见的颈内动脉（ICA）床突上段窗合并起源于 ICA 窗的大脑中动脉（MCA） duplication 以及伴发的动脉瘤。
Clin Neuroradiol. 2013 Jun;23(2):133-6. doi: 10.1007/s00062-011-0120-3. Epub 2012 Jan 10.
6
Evolution from an infundibulum of the posterior communicating artery to a saccular aneurysm.由后交通动脉漏斗部演变而来的囊状动脉瘤。
Clin Neuroradiol. 2011 Jun;21(2):87-90. doi: 10.1007/s00062-010-0038-1. Epub 2010 Dec 8.
7
Differential diagnosis of the infundibular dilation and aneurysm of internal carotid artery: assessment with fusion imaging of 3D MR cisternography/angiography.颈内动脉漏斗部扩张与动脉瘤的鉴别诊断：三维磁共振脑池造影/血管造影融合成像评估
AJNR Am J Neuroradiol. 2006 Feb;27(2):306-12.
8
Treatment of unruptured duplicated middle cerebral artery aneurysm: case report.未破裂的重复大脑中动脉瘤的治疗：病例报告
Surg Neurol. 2006 Feb;65(2):190-3; discussion 193. doi: 10.1016/j.surneu.2005.05.032.
9
Unruptured carotid-duplicated middle cerebral artery aneurysm: case report.
Surg Neurol. 2002 Nov;58(5):322-4. doi: 10.1016/s0090-3019(02)00887-x.
10
Middle cerebral artery variations detected by magnetic resonance angiography.磁共振血管造影检测到的大脑中动脉变异
Eur Radiol. 2000;10(4):560-3. doi: 10.1007/s003300050960.

大脑中动脉重复起源于增生的脉络膜前动脉起始部，在常规磁共振血管造影上形似动脉瘤。

Duplicated middle cerebral artery arising from the origin of the hyperplastic anterior choroidal artery that mimicked aneurysm on routine MR angiography.

作者信息

Uchino Akira, Ito Sayaka, Kurita Hiroki, Tanaka Masahiko

机构信息

Department of Diagnostic Radiology, Saitama Medical University International Medical Center, Japan Social Medical Corporation KAN-ETSU, KAN-ETSU Hospital, Japan

Department of Neurosurgery, Saitama Medical University International Medical Center, Japan.

出版信息

Neuroradiol J. 2016 Apr;29(2):106-9. doi: 10.1177/1971400916633711. Epub 2016 Feb 25.

DOI:10.1177/1971400916633711
PMID:26915899
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4978320/
Abstract

We report a case of duplicated right middle cerebral artery that arose from the origin of the right hyperplastic anterior choroidal artery diagnosed by magnetic resonance angiography. To our knowledge, this is the first case of such a variation reported with magnetic resonance angiographic images. The internal carotid artery-hyperplastic anterior choroidal artery-duplicated middle cerebral artery junction was dilated and mimicking aneurysm. Partial maximum intensity projection images and volume-rendering images showed that it was not a saccular aneurysm but an infundibular dilatation. Careful observation of magnetic resonance angiographic images including its source images is important for detecting rare arterial variations. To identify an anomalous artery on magnetic resonance angiography, creation of partial maximum intensity projection images and volume-rendering images is valuable.

摘要

我们报告了一例通过磁共振血管造影诊断出的右侧大脑中动脉重复起源于右侧增生性脉络膜前动脉的病例。据我们所知，这是首例通过磁共振血管造影图像报道的此类变异病例。颈内动脉 - 增生性脉络膜前动脉 - 重复大脑中动脉交界处扩张，类似动脉瘤。部分最大强度投影图像和容积再现图像显示，这不是囊状动脉瘤，而是漏斗状扩张。仔细观察包括源图像在内的磁共振血管造影图像对于检测罕见的动脉变异很重要。在磁共振血管造影中识别异常动脉时，创建部分最大强度投影图像和容积再现图像很有价值。