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《Chinese Journal of Cenebrovascular Diseases》 2004-01
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Analysis of ultrasonic detection for the patients with carotid artery stenosis underwent carotid stent

HUA Yang , LING Chen, DUAN Chun, LI Sheng Mao, MIAO Zhong Rong Xuanwu Hospital, Capital U-niversity of Medicine Science, Beijing 100053, China  
Objective In order to evaluate and follow the effect of carotid stent used by the combined result of color duplex flow imaging (CDFI) and transcranial Doppler (TCD). Methods 53cases (47 male, 6female, aged from 41 - 83 years, mean (64. 26±9. 63)years) with carotid artery stenosis were investigated pre-post stent treatment 1 to 24 month. . The diameter of vessels, percent of stenosis, index of hemodynamicsintra-extracranial artery were recorded and compared respectively. Results 53 cases with carotid artery stenosis were successfully managed by carotid aetery stent. None of these patients happened is-chemic symptoms again after procedure. The diameter of carotid artery was increased from (1. 644±0. 817) mm to(4. 150±0. 642) mm( P = 0. 000) by means of CDFI. The percent of stenosis of vessels were reduced significantly. Angiography and CDFI showed the stenosis of percent from (84. 63±11. 41)% to (14. 37±6.6. 1)% and (84. 84 ±10. 09)% to (14. 85±8. 4)% (P = 0. 000) respectively. The velocity of MCA improved 20% -189% was detected by TCD, mean value was (63±34)% after carotid artery stent, pulsatilty index (PI) of MCA were changed from 0. 76±0. 17 to 1. 04±0. 14(P = 0. 000) . Intracranial collateral circulation was opened before stent placement; while it was closed post procedure. The changes of velocity of MCA and PCA were mutually related to the intracranial collateral circulation. Conclusion According to the result of combing CDFI and TCD clued on the really gist of hemodynamics extra-intracranial pre-postoperation, it is very important method for assessing and following the curative effect of carotid artery stent.
【CateGory Index】: R445.1
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