Epidemiological characteristics and magnetic resonance angiography features of duplicated and accessory middle cerebral artery
10.16098/j.issn.0529-1356.2025.04.010
- VernacularTitle:重复大脑中动脉及副大脑中动脉变异的流行病学特点及磁共振血管成像特征
- Author:
Juan WANG
1
;
Yong ZHANG
;
Wei SHANG
Author Information
1. 安阳市人民医院放射科,河南安阳 455000
- Keywords:
Duplicated middle cerebral artery;
Accessory middle cerebral artery;
Epidemiologic study;
Magnetic resonance angiography;
Human
- From:
Acta Anatomica Sinica
2025;56(4):452-458
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the epidemiological characteristics and magnetic resonance angiography(MRA)features of duplicated and accessory middle cerebral artery(DMCA and AMCA),and to raise awareness of this vascular variation.Methods Imaging data of 8131 patients underwent cranial MRI and MRA examinations in Anyang People's Hospital from April 2023 to August 2023 were collected,and DMCA or AMCA variation were investigated.The epidemiological characteristics,MRA features and classification of DMCA and AMCA were analyzed.Meanwhile the concurrent other cerebrovascular variations were observed.Results Totally 113 of 8131 patients were detected to have 119 DMCA or AMCA vascular variants.There were 64 DMCA including 24 type A and 40 type B,and there were 55 AMCA including 38 of type 1 and 17 of type 2.The relative diameter of type A DMCA was larger than that of type B DMCA,type 1 and type 2 AMCA.The difference was statistically significant(P＜0.05).The incidence of DMCA and AMCA combined with other cerebrovascular variations was 54.69％and 34.69％,respectively.Conclusion MRA is simple and practicable,and can intuitively display DMCA or AMCA.So,it can be used as an important method for the diagnostic of DMCA or AMCA.The DMCA and AMCA variation make related surgeries more complex,and it plays an undeniable role in the prognosis of related cerebral infarction.This vascular variation has important clinical significance for guiding neurosurgeons and neurologists to formulate reasonable treatment plans.
