Duplex US of the External Carotid Artery
| Autor: | I. Suramo, V. Myllylä, Tapani Tikkakoski, T. Siniluoto, M. Päivänsalo |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Adult
Male medicine.medical_specialty Duplex ultrasonography Carotid Artery Common Radiography External carotid artery Diastole Contrast Media 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Reference Values medicine.artery Internal medicine medicine Humans Carotid Stenosis Radiology Nuclear Medicine and imaging Aged Aged 80 and over Ultrasonography Doppler Duplex Radiological and Ultrasound Technology business.industry Vascular disease General Medicine Middle Aged medicine.disease Stenosis medicine.anatomical_structure ROC Curve Duplex (building) 030220 oncology & carcinogenesis Carotid Artery External Cardiology Regression Analysis Female Radiology business Blood Flow Velocity Carotid Artery Internal Artery |
| Zdroj: | Acta Radiologica. 37:41-45 |
| ISSN: | 0284-1851 |
| Popis: | The ratio between the systolic peak velocities of the internal and common carotid arteries (vpICA/vpCCA), vpICA and grey-scale imaging measurement are generally used to evaluate internal carotid stenosis against known flow criteria in order to differentiate non-significant from significant stenosis. The same criteria are also used for evaluating the external carotid artery (ECA). Our data on 707 normal or stenotic ECA nevertheless showed that the systolic peak velocity of the normal ECA (vpECA) and its ratio to the systolic velocity of the CCA (vpECA/vpCCA) are higher than vpICA and vpICA/vpCCA. vpECA/vpCCA is about 2 in >0–49% ECA stenosis. Only in severe stenosis are the peak velocities almost comparable. The ratio between the peak end diastolic velocities (edvECA/edvCCA) and edvECA proved to be unreliable, as did grey-scale imaging measurement of the external carotid stenosis. In addition, ipsilateral internal carotid stenosis greatly affects the non-stenotic external carotid flow values, and probably has the same effect on the flow values of a stenotic external artery. Thus, external carotid flow values must be considered carefully. |
| Databáze: | OpenAIRE |
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