Diameter measurements of cerebral arteries on three-dimensional time-of-flight MR angiograms
- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 5
- DOI:
- 10.3760/j.issn:1005-1201.2003.05.002
- Key Word:
- 脑动脉;磁共振成像;摄影测量法
Abstract： 目的测量并建立国人正常脑底动脉直径磁共振血管成像(MRA)正常值.方法常规MR检查脑实质及脑动脉三维时间飞越法(3D TOF) MRA检查脑底动脉表现无异常者100例,其中男53例,女47例,年龄4～75岁,平均45.8岁;≤14岁者12例,＞14岁者88例.采用投影仪放大胶片间接测量法测量各脑动脉直径,分析其左右侧、年龄和性别上的差异性,并统计出各动脉直径的正常参考值.结果各脑动脉直径测量值为:眼动脉(OphA)男为(0.8±0.2) mm,女为(0.9±0.2) mm;颈内动脉(ICA) C2段男为(3.0±0.3) mm(≤14岁)和(3.5±0.6) mm(>14岁),女为(2.8±0.6) mm(≤14岁)和(3.1±0.5) mm(＞14岁);ICA C4段男为(4.3±0.6) mm,女为(3.9±0.6) mm;大脑前动脉(ACA) A1段男为(2.1±0.4) mm,女为(2.1±0.4) mm;前交通动脉(ACoA)男为(1.4±0.4) mm,女为(1.3±0.4) mm;大脑中动脉(MCA) M1段男为(2.7±0.4) mm,女为(2.6±0.4) mm;基底动脉(BA)男为(2.9±0.5) mm,女为(2.8±0.4) mm;大脑后动脉(PCA) P1段男左为(2.1±0.5) mm、右为(2.0±0.5)mm,女左为(2.0±0.3) mm、右为(1.9±0.3) mm;PCA P2段男为(1.8±0.4)mm,女为(1.7±0.3) mm;后交通动脉(PCoA)男为(1.1±0.3) mm,女为(1.2±0.4) mm.各动脉直径中,PCA P1段左侧>右侧(P=0.003);MCA M1段(P=0.048)、PCA P1段(P=0.012)、ICA C2段(P=0.000)和C4段(P=0.000)在性别上差异具有非常显著性意义,男性均大于女性;ICA C2段在年龄上差异具有非常显著性意义(P=0.001).PCA P1段与P2段直径存在显著相关性(r=0.652,P=0.000).ICA C2段和C4段直径在女性组存在显著相关性(r=0.550,P=0.000).结论脑底动脉直径MRA正常值可作为临床判断脑血管疾病的参考.
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