| 袁飞,刘银社,龙淼淼,袁滨,顾欣,高光峰.3.0T磁共振多站式多期相CE-MRA在外周血管病变中的应用[J].中国医学影像技术,2006,22(5):726~729 |
| 3.0T磁共振多站式多期相CE-MRA在外周血管病变中的应用 |
| Multiposition dynamic contrast enhanced MR angiography in peripheral vessel diseases at 3.0T MR |
| 投稿时间：2006-01-13 修订日期：2006-03-10 |
| DOI： |
| 中文关键词: 磁共振血管造影术 减影技术 血管疾病 周围血管 |
| 英文关键词:Magnetic resonance angiography Subtraction technique Vessel disease Peripheral vessel |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨3.0T MR多站式多期相三维增强血管造影(CE-MRA)在外周血管病变中的应用价值。方法 23例怀疑腹盆及下肢血管病变的病人。在3.0T MR上,自动移床四段多期相动态扫描,分析CE-MRA的图像质量及其对各种血管病变的显示情况。结果 全部病例图像显示清晰。其中19例下肢动脉硬化闭塞症病人的627支血管,MRA诊断重度狭窄和闭塞的敏感度与特异度分别为94％和100％,阳性预测值81％,阴性预测值为99％。与DSA的诊断结果符合率是89％。结论 3.0T MR多站式多期相CE-MRA,可获得高信噪比及超高分辨率的下肢动脉及静脉图像。具有安全、无创伤性,能准确诊断外周血管性病变。 |
| 英文摘要: |
| Objective To evaluate the clinical value of multiposition dynamic contrast enhanced MRA in peripheral vessel diseases at 3.0T MR. Methods Twenty-three patients suspected of peripheral vessel diseases underwent multistacks and multiphase contrast enhanced MRA at 3.0T MR. The quality of images and vascular segments from infrarenal aorta to the feet were evaluated. Results MRA provided an image quality comparable with that of DSA. In 627 vascular segments of 19 patients with atherosclerotic peripheral vascular disease, the sensitivity and specificity for detection of severe stenosis and occlusions was 94％ and 100％ respectively, positive predictive value of 81％, and negative predictive value of 99％. The kappa value calculated to measure concordance between DSA and MRA was 89%. Conclusion Multi-station and multi-phase contrast enhanced three-dimensional at 3.0T MR can provide high SNR and ultrahigh resolution images of peripheral vessels. It is proved to be a safe, fast and noninvasive scan model, which is more sensitive and specific for diagnosis of the peripheral vessel diseases. |
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