摘要
目的 通过和彩超及手术病理的对照分析 ,评价MRI对主动脉夹层的诊断价值。方法 回顾性分析了17例经我院手术病理证实的主动脉夹层动脉瘤 ,每例术前均行MRI及彩超检查。结果 ① 16例MRI清晰显示了主动脉内膜瓣及由其分隔的真假腔 ,MRI诊断的手术符合率为 94 .1% ( 16/ 17) ,术前彩超诊断符合率同样为 94 .1%( 16/ 17)。②MRI及彩超分型的手术符合率分别为 94 .1% ( 16/ 17)及 70 .6% ( 12 / 17)。③主动脉弓分支受累 3例 ,MRI图像上全部得以显示 ,而彩超仅显示了其中一例。④合并主动脉瘤样扩张 7例 ,MRI及彩超的手术符合率均为10 0 %。⑤合并主动脉瓣返流 6例 ,MRI及彩超的诊断正确率分别为 3 3 .3 %及 85 .7%。⑥MRI及彩超对内膜破口的显示率分别为 11.8%及 17.6%。结论 MRI对主动脉夹层有较大的诊断价值 ,对夹层部位及主动脉分支受累的显示优于彩超 ,对内膜破口及主动脉瓣功能的显示有一定限度。
Purpose To evaluate the diagnostic importance of MRI in aortic dissection through comparison with color echocardiography and surgical pathology. Methods 17 cases of aortic dissection proved by surgical pathology were analyzed retrospectively. Each case underwent MRI and color echocardiography examination before operation. Results ①MRI and color echocardiography depicted an intimal flap and a double lumen in 94.1%(16/17) patients respectively. ②MRI classification coincided well with the operative findings in 94.1%(16/17) of cases while color echocardiography in 75%(9/12). ③MRI demonstrated the major aortic branches involvement in all 3 cases and color echocardiography only in 1case. ④In the 7 cases that complicated with aortic aneurysm, both MRI and color echocardiography coincided well with the operative findings in 100% of cases. ⑤To complicated aortic regurgitation, the demonstration rate of MRI was lower than that of color echocardiography(33.3% verse 85.7%). ⑥To the site of intimal tear, both had a lower demonstration rate(11.8% and 17.6% respectively). Conclusion MRI plays an important role in the diagnosis of aortic dissection and is better than color echocardiography in demonstrating the site and extent of dissection and the involvement of major aortic branches and there is limitation in demonstrating the entry tear and aortic regurgitation.
出处
《中国医学影像技术》
CSCD
2001年第8期729-730,共2页
Chinese Journal of Medical Imaging Technology
关键词
主动脉夹层
磁共振成像
彩超
诊断
Aortic dissection
Magnetic resonance imaging
Color echocardiography
