多层CT 后处理图像对主动脉缩窄的诊断价值

多层CT 后处理图像对主动脉缩窄
的诊断价值
刘学静 王洪波 武乐斌 柳澄 王道萍 王丽君
【摘要】 目的 探讨多层螺旋CT( MSCT) 后处理图像对主动脉缩窄的诊断价值。方法 对9 例
临床怀疑为主动脉缩窄的患者进行主动脉增强扫描。对所有扫描图像行冠、矢状面多平面重组
( MPR) 及容积再现( VR) 、最大密度投影( MIP) 、表面阴影成像( SSD) 、薄层VR 重组。结果 9 例患
者经行主动脉CT 成像检查, 均确诊为主动脉缩窄, 其中有2 例合并动脉导管未闭。结果与手术及
DSA 检查结果相一致。主动脉靶重建全面整体显示9 例患者缩窄情况, 整体VR 全面整体显示9 例患
者侧支循环情况。结论 MSCT 二维与三维图像相结合对主动脉缩窄诊断和治疗方案的制定以及术
后随访是1 种非常有用的无创的检查方法。
【关键词】 主动脉缩窄; 体层摄影术, X 线计算机; 图像处理, 计算机辅助
Clinica l value of postpr ocessing images of multi-slice spira l CT in the diagnosis of aor tic coa rctation
LIU Xue-jing, WANG Hong-bo, WU Le-bin, LIU Cheng, WANG Dao-ping, WANG Li-jun. Shandong
Provincal Medical Imaging Research Institute, Shandong University, Jinan 250021, China
【Abstra ct 】 Objective To explore the clinical value of postprocessing images of multi-slice spiral
CT ( MSCT) in the diagnosis of aortic coarctation. Methods Enhanced MSCT scan of the aorta was
performed in 9 patients with suspected aortic coarctation. Two-dimensional and three-dimensional reformation
were performed in all cases by means of MPR ( coronal, sgittal oblique) , MIP, SSD, VR, and clipped VR,
respectively. Results 9 cases were diagnosed as aortic coarctation by MSCT enhanced scan. 2 cases had
patent ductus. The results accorded with surgical and DSA findings. Three-dimensional reformation of aorta
could show the stenosis in all cases, and VR images of the whole chest could show the collateral circulatory
pathways in all cases. Conclusion Two-dimensional and three-dimensional MSCT angiography is a useful
and noninvasive mean to identify aortic coarctation. MSCT is also useful for planning the therapeutic method
and postoperative follow-up examinations.
【Key wor ds】 Aortic coarctation; Tomography, X-ray computed; Image processing, computerassisted

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