Application and evaluation of intravascular ultrasound in ischemic cerebrovascular disease during stent implantation
10.3969/j.issn.1673-8225.2009.48.027
- VernacularTitle:血管内超声在缺血性脑血管疾病支架置入过程中的应用与评价
- Author:
Yuhong ZHANG
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2009;13(48):9519-9522
- CountryChina
- Language:Chinese
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Abstract:
OBJECTIVE: Cerebral endovascular stent implantation has become an important method to treat ischemic cerebrovascular disease. However, its application has been limited by restenosis following implantation. The effect and significance of ultrasound in identifying and reducing restenosis following endovascular stent implantation was explored. METHODS: A computer-based online search of VIP database and CNKI database was performed for articles recording ultrasound evaluation of ischemic cerebrovascular disease following endovascular stent implantation. A total of 22 articles were collected, and 6 were included. Inclusion criteria: application of intravascular ultrasound in carotid artery stent implantation; guidance and effect evaluation of intravascular ultrasound; short- and long-term effect evaluation of carotid artery stent implantation by color Doppler ultrasound and transcranial Doppler ultrasound. Exclusion criteria: outdate and repetitive studies. RESULTS: Intravascular ultrasound can precisely measure vascular lumina stenosis degree, stenosis length and luminal area before stent implantation to select stent with appropriate size and length and effectively guide stent implantation. Intravascular ultrasound probe can observe stent expansion, expansion symmetry, and precisely determine expanded stent size and attachment of stent to the vessel wall. Color Doppler ultrasound and transcranial Doppler ultrasound can monitor the short- and long-term effect of stent implantation so as to discover, treat and reduce restenosis as early as possible, confirm causes for restenosis following stent implantation, guide treatment of restenosis, reduce incidence of restenosis and improve stent implantation effect. CONCLUSION: Intravascular ultrasound remedies disadvantages of digital subtraction angiography, increases stent extension area and reduces incidence of restenosis. Following stent implantation, intravascular ultrasound can accurately detect stent expansion degree and attachment of stent to the vessel wall; Color Doppler ultrasound and transcranial Doppler ultrasound can monitor blood follow in stent, and play an important role in evaluating restenosis and preventing restenosis following endovascular stent implantation.
