主动脉夹层的MRI诊断和评价

目的评价ＭＲＩ对主动脉夹层的定性诊断和分型的价值及对临床治疗的指导作用。方法分析３２例主动脉夹层的ＭＲＩ影像资料，并与彩色多普勒超声（ＣＤＥ）对照。其中１８例手术病理证实，１４例造影证实。结果主动脉夹层ＭＲＩ表现为典型的真假腔和内膜片，定性准确率为９２７％，ＣＤＥ为６０９％，分型符合率ＭＲＩ为９３８％，ＣＤＥ为４３８％，ＭＲＩ明显优于ＣＤＥ（Ｐ＜０．０５）。结论ＭＲＩ是诊断主动脉夹层准确、全面、无创和首选的影像学检查方法，具有较高的临床应用价值

Aortic Dissection:MRI Diagnosis and Evaluation

Purpose To evaluate the MRI value of definitive diagnosis and typing as well as its roles to clinical management with aortic dissection (AD). Methods The MRI findings were analyzed and compared with that of color doppler echocardiography (CDE) in 32 patients proved by surgical exploration in 18 cases and aortography in 14 cases. Results The MRI typical appearences were the true and false lumina and the intimal flap of AD. The accuracy of MRI and CDE was 92. 7%, 60.9% respectively in characterizing AD. For determining AD type, the ratio MRI conformed by operation and aortography amount to 93.8% (CDE 43.8%), MRI was superior to CDE significantly ( P <0.05).Conclusion MRI is an accurate, comprehensive, non invasive medical imaging technique and can serve as an initial imaging modality for AD diagnosis.