Angiographic and Intravascular Ultrasonographic Findings after Endovascular Stent Implantation
| Autor: | A. Gronningsæter, H. O. Myhre, S. Hatlinghus, R. Wiseth, K.-D. Bolz |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Intravascular ultrasound medicine Stent implantation Radiology Nuclear Medicine and imaging cardiovascular diseases Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Ultrasound Stent General Medicine equipment and supplies medicine.disease Coronary arteries Stenosis surgical procedures operative medicine.anatomical_structure 030220 oncology & carcinogenesis Angiography cardiovascular system Radiology business Artery |
| Zdroj: | Acta Radiologica. 35:590-596 |
| ISSN: | 1600-0455 0284-1851 |
| Popis: | The study was an attempt to evaluate the benefit of intravascular ultrasound imaging (IVUS) as a supplement to follow-up angiography after endovascular stent implantation. A consecutive series of 15 patients underwent stent implantation in the peripheral or coronary arteries. Ten Palmaz stents, 3 Palmaz-Schatz stents and 2 Wallstents were used. After a period from 1 to 6 months (mean 3.2 months) follow-up angiography was performed. In 12 cases the angiography was combined with IVUS of the stent and the adjacent vessel segments. In one case IVUS failed due to the tortuous course of the vessel, in another case the stent was occluded, and in one case IVUS was considered too hazardous. In stents of diameter ≥5 mm, ultrasound (US) did not reveal more information concerning vessel and stent diameter, stent stenosis and intraluminal surface contact than angiography alone. Smaller stents were insufficiently visualized by conventional radiologic methods. In small stents only IVUS permitted an exact stent identification and differentiation between stent stenosis and stenosis of the native vessel. At US imaging artifacts, caused by the highly reflectant metallic stent struts, interfered with the native vessel wall and partly obscured its structural details. |
| Databáze: | OpenAIRE |
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