复杂型主动脉缩窄和主动脉弓离断的e-Speed电子束CT诊断

Diagnostic value of electron beam tomography in the evaluation of complex congenital coarctation of aorta and interruption of aorta arch

目的:探讨电子束CT在复杂型主动脉缩窄(COA)和主动脉离断(IAA)诊断中的应用价值和影像学表现。方法:9例COA和6例IAA的患者进行静脉注射对比剂容积扫描,对所有扫描图像行冠、矢状面多平面重建(MPR)及容积再现(VR)、最大密度投影(MIP)、薄层VR重组和电影模式,并经DSA造影和手术证实。结果:EBCTA清晰显示COA和IAA的解剖细节,可对此二种疾病进行分型及诊断,正确诊断率为96.1%。结论:EBCTA作为一种无创性血管造影技术,对COA和IAA有重要的诊断价值。

Objective： To evaluate the applicative value and findings of electron beam tomography angiography（EBCTA）in complex congenital coaretation of aorta （COA）and interruption of aorta arch（IAA） .Methods：9 cases of COA and 6 cases of IAA were performed EBCTA volumetric scanning with administration of contrast agent. Two-dimensional and three-dimensional reformation were performed in all cases by means of multi-phnar reconstruction, maximum intensity projecting, volume rendering, and clipped volume rendering, motion picture, respectively. All of the patients were confirmed by surgery and conventional angiography. Results： EBCTA dearly demonstrated the detailed anatomical infomation, by which the COA and IAA could be diagnosed and classified. The diagnosis accuracy of EBCTA in COA and IAA was 96.1%. Conclusion： Being non-invasive angiographie technique, EBCTA is valuable for the diagnosis of the COA and IAA.