JOURNAL OF SHANDONG UNIVERSITY (HEALTH SCIENCES) ›› 2016, Vol. 54 ›› Issue (3): 50-54.doi: 10.6040/j.issn.1671-7554.0.2015.1164

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The value of multiphase dynamic reconstruction with CTA to the intimal flap motion of abdominal aortic dissection

LIU Wen1, WANG Ximing2, DUAN Yanhua2, YANG Shifeng3, JI Xiaopeng3, KANG Rui4   

  1. 1. Taishan Medical University, Taian 271016, Shandong, China;
    2. Shandong Medical Imaging Research Institute, Jinan 250021, Shandong, China;
    3. Department of Imaging, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China;
    4. School of Medicine, Shandong University, Jinan 250012, Shandong, China
  • Received:2015-11-25 Online:2016-03-10 Published:2016-03-10

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Abstract: Objective To explore the value of low dose of multiphase dynamic reconstruction using retrospective ECG gated CTA to the intimal flap motion of abdominal aortic dissection. Methods Thirty patients with abdominal aortic dissection underwent with retrospective ECG gated double source CT(DSCT), and 20 datasets were reconstructed in 5% steps between 0 and 95% of the R-R interval in each case. The short axis diameter of the true lumen and abdominal aorta in the level of the root of celiac and superior mesenteric artery, left renal artery and right renal artery in each phase were measured, and the ratio of both(d-T/d-AA)was calculated. The ratio of the minimum and maximum as well as 70% R-R intervals was calculated and the three statistical difference for evaluating the intimal flap indirectly was compared. Results The scope of intimal flap was strong in the level of celiac and superior mesenteric artery, and intimal flap was significantly changed between 70% R-R, the maximum and the minimum. Intimal flap was significantly changed between the maximum and minimum in the level of right renal artery and left renal artery. The scope of intimal 山 东 大 学 学 报 (医 学 版)54卷3期 -刘文,等.CTA多期动态重建显示腹主动脉夹层内膜搏动的应用价值 \=-flap was weak between 70% R-R and the maximum as well as between 70% R-R and the minimum. The changes was not obvious. Conclusion Low dose of multiphase dynamic reconstruction using retrospective ECG gated CTA can show the intimal flap motion of abdominal aortic dissection.

Key words: Dynamic reconstruction, Intimal flap, Abdominal aortic dissection, Retrospective ECG-gated CTA

CLC Number: 

  • R445.3
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