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Chinese Journal of Interventional Radiology(Electronic Edition) ›› 2014, Vol. 02 ›› Issue (01): 48-50. doi: 10.3877/cma j.issn.2095-5782.2014.01.014

• Medical imaging • Previous Articles     Next Articles

CT perfusion study of pre-and post-operative cerebral hemodynamics in patients with carotid artery stenting

Hongtao Niu1, Wenli Zhang1, Renyou Zhai1,(), Jianfeng Wang1, Baojie Wei1   

  1. 1.Department of Radiology,the First Hospital of Qinhuangdao,Qinhuangdao 066000,China
  • Received:2013-07-08 Online:2014-03-01 Published:2024-12-02
  • Contact: Renyou Zhai

Abstract:

Objective

To evaluate the change of cerebral perfusion of patients with severe carotid stenosis before and after undergoing carotid artery stent placement(CAS)with CT perfusion(CTP).

Methods

Twenty-two patients with carotid artery stenosis were underwent cerebral perfusion CT before and after the stentplacement procedure.Cerebral blood volume(CBV),cerebral blood flow(CBF)and mean transit time(MTT)values were measured.

Results

There was significant difference in preoperative bilateral cerebral perfusion of 19 cases with unilateral carotid artery stenosis.CBF of affected side was lower than that of uninjured side(21.90±3.37 vs 37.17±6.34,t=13.445,P﹤0.001).MTT of affected side was longer than that of uninjured side(8.44±1.02 vs 5.75±0.81,t=9.605,P﹤0.001).There was no significant difference between affected side and uninjured side(2.03±0.31 vs 2.14±0.25,t=1.204,P=0.2365).The perfusion parameters of affected side was normalizing after CAS.

Conclusions

CTA combined with CTP is a useful technique for the assessment of the hemodynamic modifications in patients with severe carotid stenosis.The quantitative evaluation of cerebral perfusion makes it a reliable tool for the follow-up of patients who undergo CAS.

Key words: Liver transplantation, Hepatic artery stenosis, Stents

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