Journal of Capital Medical University ›› 2014, Vol. 35 ›› Issue (2): 173-178.doi: 10.3969/j.issn.1006-7795.2014.02.007

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Application of ultrasound and computed tomography angiography in the aortic dissection depending on the modified Stanford classification system

Yu Weidong, Du Guoqing, Tian Jiawei, Jiang Shuangquan, Di Zhixin, Wang Xudong   

  1. Department of Ultrasound, Second Affiliated Hospital of Harbin Medical University, the Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin 150086, China
  • Received:2013-12-18 Online:2014-04-21 Published:2014-04-16
  • Contact: 田家玮 E-mail:jwtian2004@163.com

Abstract: Objective To evaluate the value of ultrasound and ultrasound combined with CTA in the assessment for modified Stanford classification system of aortic dissection. Methods Totally 128 cases of highly suspected acute dissection patients have been enrolled and examined by ultrasound and CTA respectively, and have been classified depending on the modified Stanford classification system. The modified Stanford classification system of aortic dissection includes the types of A1, A2, A3 and B1, B2, B3, which also includes two subtypes of S and C. According to the surgical findings, the diagnostic efficiency of ultrasound, CTA and combining both in the assessment for modified Stanford classification system of acute aortic dissection have been evaluated. Results The preoperative diagnostic sensitivity of ultrasound, CTA and combination of both in the assessment for modified Stanford classification system of acute aortic dissection is 76.5%, 91.3% and 100%, respectively; the specificity is 34.5%, 0.0% and 34.5% respectively; the accuracy is 72.7%, 82.0% and 93.8% respectively; the positive predictive value is 91.7%, 89.0% and 93.5% respectively; the negative predictive value is 15.6%, 0.0% and 100% respectively. The accuracy of diagnosing the subtypes A1S, A2S and A3S are 100% by ultrasound, but the subtype B3C is easily missed diagnosis; A1S, A1C and all subtypes of B by CTA were 100%, but for A2S and A2C were easily misdiagnosed. Combining ultrasound with CTA can increase the diagnostic accuracy significantly. Conclusion There are great value of ultrasound and CTA in clinical practice for assessment of modified Stanford classification of acute dissection, and combining ultrasound with CTA will contribute to increase significantly the sensitivity, accuracy, the positive predictive and the negative predictive value.

Key words: ultrasound, computed tomography angiography, aortic dissection, classification

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