Color-Coded Image-Directed Doppler Sonography Compared with Digital Subtraction Angiography in the Follow-Up of Percutaneous Vascular Endoprostheses
| Autor: | Rolf W. Guenther, Bohndorf K, Hans-Bjoern Gehl, Dierk Vorwerk |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
medicine.medical_specialty
Percutaneous medicine.diagnostic_test business.industry Lumen (anatomy) Digital subtraction angiography Intravenous digital subtraction angiography Flow pattern symbols.namesake Doppler sonography Homogeneous medicine symbols Radiology Nuclear Medicine and imaging Radiology business Doppler effect |
| Zdroj: | Journal of Clinical Ultrasound. 18:631-637 |
| ISSN: | 0091-2751 |
| DOI: | 10.1002/jcu.1990.18.8.631 |
| Popis: | Color-coded image-directed Doppler sonography (CCIDS) was used in the follow-up of self-expandable vascular endoprostheses and was compared with the results of digital subtraction angiography and Doppler pressure indices. The stents were implanted in iliac and femoral arteries or hemodialysis fistulae of 26 patients. The aim of the study was to evaluate the potential of the new imaging method to identify local flow patterns inside of vascular endoprostheses. The stents were identified by sonography in all cases; laminar flow was represented in CCIDS by homogeneous Doppler signals. In case of a distinctly reduced lumen, intravenous digital subtraction angiography (DSA) and CCIDS were both able to identify the stenotic process; however, CCIDS was superior in the demonstration of minute flow irregularities. No different flow patterns were detected in comparing recent with older vascular implants. |
| Databáze: | OpenAIRE |
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