椎动脉缺血型颈椎病的MRA改变及临床意义

目的用三维动态MRA无创成像技术探讨椎动脉缺血型颈椎病MRA表现及其临床意义。方法眩晕者共76例，均行MRA椎动脉检查。结果测量出椎动脉正常值，左侧为(4.1±0.79)mm，右侧为(3.2±0.83)mm。根据MRA表现将椎动脉缺血型颈椎病分为3型Ⅰ型(椎动脉受压型)，Ⅱ型(椎动脉硬化型)，Ⅲ型(椎动脉畸形型)。通过椎动脉MRA成像特点能够对受累椎动脉作出精确、定性诊断。对5例椎动脉Ⅰ型患者行椎动脉松解术后，MRA显示椎动脉的上述改变已改善或消失，疗效优良。结论MRA是椎动脉缺血型颈椎病的一重要筛检诊断工具，对治疗方法的选择及其预后判断具有重要价值。

The MRA Images in the Cervical Spondylosis of the Vertebral Artery Insufficiency and Its Clinical Significance

Objective:The 3D MRA of 76 cases suspected as vertebral artery insufficient of cervical spondylosis were studied.Methods： All c ases were measured with vertebral artery.The diameter of left vertebral artery i s 4.1±0.79mm.That of right vertebral artery is 3.2±0.83mm.Results： The cervica l s pondylosis of the vertebral artery insufficiency is divided into three types acc ording to the MRA images:typeⅠ(The verteral artery compression type):It shows t he artery's pressure、trusion、sinuous or obstruction,et al.typeⅡ(The vertebral art eriosclerosis type):It shows string-beads.Artery occlusion,centripetal arteriost enosis,et al.typeⅢ(The vertebral artery malformation type):It shows that the di ff erence of two vertebral arteries size is large or the numbers of artery are not symmetry、Ring sinuous etc.MRA can get the high level diagnosis and qualitativ e diagnosis.after 5 cases of typeⅠwere performed with uncinate joint resection,M RA shows the change was modified or disappeared.Conclusion： So MRA is of signif icant value in the prognosis、diagnosis and the choice of treament.