小脑前下动脉（AICA）动脉瘤：15例连续患者的影像学研究

Anterior inferior cerebellar artery (AICA) aneurysms: a radiological study of 15 consecutive patients.

作者信息

Muhammad Sajjad, Hafez Ahmad, Kaukovalta Hanna, Rezai Jahromi Behnam, Kivisaari Riku, Hänggi Daniel, Niemelä Mika

机构信息

Department of Neurosurgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.

Department of Neurosurgery, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany.

出版信息

Front Radiol. 2023 Aug 8;3:1229921. doi: 10.3389/fradi.2023.1229921. eCollection 2023.

DOI:10.3389/fradi.2023.1229921

PMID:37614531

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10442703/

Abstract

INTRODUCTION

The aneurysms of the anterior inferior cerebellar artery (AICA) are rare lesions of the posterior circulation and to treat them is challenging. We aim to present anatomical and morphological characteristics of AICA aneurysms in a series of 15 patients.

METHOD

The DSA and CT angiography images of AICA aneurysms in 15 consecutive patients were analyzed retrospectively. Different anatomical characteristics were quantified, including morphology, location, width, neck width, length, bottleneck factor, and aspect ratio.

RESULTS

Eighty percent of the patients were females. The age was 52.4 ± 9.6 (mean ± SD) years. 11 patients were smokers. Ten patients had a saccular aneurysm and five patients had a fusiform aneurysm. Aneurysm in 10 patients were located in the proximal segment, in three patients in the meatal segment, and in two patients in the distal segment. Ten out of 15 patients presented with a ruptured aneurysm. The size of AICA aneurysms was 14.8 ± 18.9 mm (mean ± SD). The aspect ratio was 0.92 ± 0.47 (mean ± SD) and bottleneck factor was 1.66 ± 1.65 (mean ± SD).

CONCLUSION

AICA aneurysms are rare lesions of posterior circulation predominantly found in females, present predominantly with subarachnoid hemorrhage, and are mostly large in size.

摘要

引言

小脑前下动脉（AICA）动脉瘤是后循环的罕见病变，治疗具有挑战性。我们旨在呈现15例患者的AICA动脉瘤的解剖和形态学特征。

方法

回顾性分析15例连续患者的AICA动脉瘤的数字减影血管造影（DSA）和CT血管造影图像。对不同的解剖特征进行量化，包括形态、位置、宽度、颈宽、长度、瓶颈因子和纵横比。

结果

80%的患者为女性。年龄为52.4±9.6（平均±标准差）岁。11例患者吸烟。10例患者为囊状动脉瘤，5例患者为梭形动脉瘤。10例患者的动脉瘤位于近端段，3例患者的动脉瘤位于内耳道段，2例患者的动脉瘤位于远端段。15例患者中有10例出现动脉瘤破裂。AICA动脉瘤的大小为14.8±18.9 mm（平均±标准差）。纵横比为0.92±0.47（平均±标准差），瓶颈因子为1.66±1.65（平均±标准差）。