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Smartprep three-dimensional contrast-enhanced MR angiography in diagnosing aortic dissection<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
鞠志国 徐文坚 刘吉华 孙娟
1宁波鑫高益医疗设备公司，宁波，315400；2青岛大学医学院附属医院放射科，青岛，266003，3 青岛大学2003级心脏超声专业硕士研究生
Abstract
Objective：To study the method of Smartprep three-dimensional CE MRA and its clinical application for aortic dissection (AD).
Methods：Forty-one patients with AD were performed Smartprep 3D CE MRA with administration of Gd-DTPA.The source images were dealed with maximum intensity projection (MIP) and multiplanar reconstruction (MPR).According to the surgical findings and/or comprehensive imaging exams, the value of Smartprep CE MRA and MR imaging modality for AD diagnosis were evaluated.
Results：Thirty-six cases with AD were proved by surgical findings and/or the comprehensive imaging exams, and 35 of all cases were detected by Smartprep 3D CE MRA.The intimal flap, the true and false lumen and 30 entry tears and 26 re-entry tears were shown on CE MRA in 35 positive cases. The sensitivity and specificity of Smartprep 3D CE MRA were 94.4% and 100%, respectively. In-volvement of aortic branches was shown in 32 cases (100% accuracy).Mural thrombi were de-monstrated as a filling defect of the false lumen in 16 cases.
Conclusion：Smartprep CE MRA associated with conventional MRI is of great value in measurement and evaluation of aortic dissections.
key word：Smartprep magnetic resonce imaging angiography aortic dissection | 
