三维增强MRA与多普勒超声诊断颈部血管病变的对照分析

Comparative analysis between 3D CE MRA and CDUS in the evaluation of neck angiopathy

目的探讨三维增强MRA及彩色多普勒超声对颈部血管病变的诊断价值。方法32例有眩晕、恶心、颈部不适等症状的患者均经三维增强MRA及多普勒超声检查。结果32例的36处病变节段中,超声检出19处,3DCEMRA检出33处。结论三维增强MRA对颈部血管病变的诊断能力优于多普勒超声,而高质量的颈动脉MRA图像依赖注药后扫描时机的准确性,注药流速与总量的合理性,合适的扫描序列,以及操作者的技巧和熟练程度。

Objective To compare the diagnostic capability between three dimensional dynamic contrast - enhanced magnetic resonance angiography（3 D CE- MRA）and color Doppler ultrasonography（CDUS）for the neck angiopathy. Methods Thirty- two patients with a series of clinical symptoms such as dizziness, nausea and neck malaise underwent 3 D CE - MRA and CDUS. Results Among 36 affected segments in all patients, 3 D CE - MRA and CDUS showed 33 and 19 segments, respectively. Conclusion The capability of 3 D CE - MRA for diagnosing the neck angiopatby was significantly superior to CDUS, while high quality images of 3 D CE -MRA mainly depend on determining the best delay time, adopting the reasonable injection volume and rate of contrast medium, selecting the proper sequence parameter, and skilled level of operators.