Echocontrast-enhanced ultrasound of extracranial internal carotid artery high-grade stenosis and occlusion
| Autor: | Sepp Weber, Gerhard Schuierer, Darius G. Nabavi, D. W. Droste, Erich Bernd Ringelstein, R Jürgens |
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| Rok vydání: | 1999 |
| Předmět: |
Adult
Male Duplex ultrasonography medicine.medical_specialty Arteriosclerosis Systole Lumen (anatomy) Contrast Media Magnetic resonance angiography Precontrast medicine.artery Occlusion medicine Humans Carotid Stenosis Prospective Studies Ultrasonography Doppler Color Aged Advanced and Specialized Nursing Analysis of Variance Ultrasonography Doppler Duplex medicine.diagnostic_test business.industry Angiography Digital Subtraction Middle Aged medicine.disease Image Enhancement Stroke Stenosis Ischemic Attack Transient Ultrasonography Doppler Pulsed Angiography Female Neurology (clinical) Radiology Internal carotid artery Cardiology and Cardiovascular Medicine business Tomography X-Ray Computed Blood Flow Velocity Carotid Artery Internal Magnetic Resonance Angiography |
| Zdroj: | Stroke. 30(11) |
| ISSN: | 0039-2499 |
| Popis: | Background and Purpose —Proper assessment of extracranial internal carotid artery high-grade stenosis and occlusion by extracranial color-coded duplex sonography (ECCD) is occasionally made difficult by shadowing, an unfavorable insonation angle, low flow velocity or volume, or a deep insonation depth. In these cases, echocontrast could be helpful to quantify the degree of stenosis and to diagnose occlusion. Methods —We investigated 17 arteries with poor precontrast investigation conditions and suspected high-grade stenosis or occlusion by contrast-enhanced ECCD. Results —Compared with the precontrast scans, echocontrast allowed for significantly more segments to be evaluated by pulsed Doppler sonography ( P P Conclusions —Echocontrast-enhanced ECCD of the carotid arteries is helpful for stenosis classification in a small group of preselected patients with poor original examination conditions. |
| Databáze: | OpenAIRE |
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