椎-基底动脉形态学的320排CT研究

The morphology of vertebral-basilar artery with 320-raw computed tomography angiograghy

目的应用320排CT探讨椎-基底动脉的形态学变化及其临床意义。方法本文回顾性分析了467例患者的320排CTA。记录两侧椎动脉的直径和基底动脉的直径和长度,在MPR图像上测量基底动脉偏离程度。结果左侧椎动脉直径(2.53±0.49)mm,右侧椎动脉直径(1.92±0.41)mm,二者直径之间差异有统计学意义(P=0.0325<0.05)。基底动脉直径(3.21±0.58)mm,基底动脉长度(24.7±3.8)mm。不同年龄组之间基底动脉有无偏离无统计学差异。性别、有糖尿病、高脂血症、高尿酸血症以及酗酒与基底动脉偏离以及基底动脉分叉升高之间无显著相关性。高血压、吸烟及以前曾经吸烟与基底动脉偏离程度以及基底动脉分叉升高之间显著相关(P<0.05)。左椎动脉优势和右椎动脉优势与基底动脉弯曲方向之间有统计学差异(P=0.0073<0.05),左侧椎动脉优势者基底动脉通常向右侧弯曲;右侧椎动脉优势者基底动脉通常向左侧弯曲。结论椎动脉优势造成了基底动脉向非优势方向弯曲以及分叉升高。高血压、吸烟和曾经吸烟等是发生这种弯曲以及分叉升高的危险因素。

Objective To investigate the morphology of the vertebral-basilar artery with 320-raw computed tomograpby angiograghy and its clinical significance. Methods CT scans from a total of 467 patients who underwent 320-row CTA were reviewed retrospectively. Record the diameter of both sides of the vertebral artery and basilar artery and the length of basilar artery, measuring the distance from the center line deviation from the basilar artery on MPR images. Results The diameter of left vertebral artery was （2. 53 ± 0. 49）mm, and the right vertebral artery was （ 1.92 ± 0. 41 ） mm. There was significant difference between them. The diameter of basilar artery was （ 3.21 ± 0. 58 ） mm and the length was （24. 7 ± 3.8 ） mm. There was no difference between different age groups whether the basilar artery curvature. There was no difference between gender, diabetes, hyperlipidemia, hyperurieemia, and alcohol and the basilar artery curvature, or the basilar artery bifurcation level elevated. There were significant difference between hypertension,smoking and previous smoking and the basilar artery curvature, or the basilar artery bifurcation level elevated. The basilar artery often curvature to the right in the subjects with left vertebral artery dominant, the basilar artery often curvature to the left in the subjects with right vertebral artery dominant. Conclusions Vertebral artery dominance contributes to basilar artery curvature to the non-dominant vertebral artery side, and the basilar artery bifurcation level elevated. Hypertension, smoking, and previous smoking are their risk factors.