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Doppler colour flow imaging after carotid endarterectomy
W Steinke1, M Hennerici, C Kloetzsch
1Department of Neurology, Heinrich-Heine University, Düsseldorf, Germany.
European Journal of Vascular Surgery
|October 1, 1991
Summary
Doppler colour flow imaging (DCFI) effectively detects hemodynamic disturbances after carotid endarterectomy (CEA). Post-surgery, vessel wall changes and altered flow patterns are common and reliably visualized by DCFI.
Area of Science:
- Vascular Surgery
- Medical Imaging
- Hemodynamics
Background:
- Carotid endarterectomy (CEA) is a common procedure to prevent stroke.
- Post-operative assessment of carotid arteries is crucial for patient management.
- Doppler colour flow imaging (DCFI) is a non-invasive technique for evaluating blood flow.
Purpose of the Study:
- To assess post-operative changes in carotid arteries after CEA using DCFI.
- To correlate vessel wall abnormalities and hemodynamic disturbances with DCFI findings.
Main Methods:
- Sixty-six patients (72 carotid arteries) underwent DCFI after CEA.
- Examinations were performed in early (4-18 days) and late (2-100 months) post-operative periods.
- Analysis focused on vessel wall abnormalities and flow patterns.
Main Results:
- Minor vessel wall abnormalities were observed in 36% of ICAs and 55% of CCAs/bifurcations.
- Early and late follow-up revealed residual stenosis, occlusions, and altered flow patterns.
- Altered flow patterns were more frequent in the CCA (90%) than ICA (57%), often localized near vessel walls or in dilated segments.
Conclusions:
- Surgically induced geometric changes and vascular wall abnormalities after CEA are common.
- These changes frequently lead to distinct hemodynamic disturbances.
- DCFI is a reliable tool for detecting these post-CEA hemodynamic alterations.