Related Experiment Videos
High-resolution dynamic ultrasound imaging of the carotid bifurcation: a prospective evaluation
Insights
High-resolution dynamic ultrasound accurately detects carotid bifurcation atheromatous plaque but struggles with stenosis and thrombus identification. Further refinement is needed for comprehensive assessment of cerebrovascular disease.
Area of Science:
- Vascular Surgery
- Diagnostic Imaging
- Neurology
Background:
- Atherosclerosis in the carotid bifurcation is a major cause of ischemic stroke.
- Accurate non-invasive imaging is crucial for risk stratification and treatment decisions.
Purpose of the Study:
- To evaluate the diagnostic accuracy of high-resolution dynamic ultrasound for detecting atheromatous plaque in the carotid bifurcation.
- To compare ultrasound findings with cerebral angiography.
Main Methods:
- One hundred patients underwent simultaneous high-resolution dynamic ultrasound and cerebral angiography of the carotid bifurcation.
- Ultrasound examinations were independently interpreted for the presence of atheromatous plaque.
- Technical success rate and correlation with angiography were assessed.
Main Results:
- Ten percent of ultrasound examinations were technically unsatisfactory.
- Satisfactory correlation between ultrasound and angiography was achieved in approximately 85% of cases.
- Ultrasound accurately detected atheromatous disease but had limitations in identifying stenosis, ulceration, thrombus, and occlusion.
Conclusions:
- High-resolution dynamic ultrasound is effective for detecting moderate to extensive atheromatous plaque in the carotid bifurcation.
- Ultrasound's ability to reliably identify critical cerebrovascular disease features like stenosis and thrombus is limited.
- Angiography remains essential for a comprehensive assessment of carotid artery disease.
Abstract:
One hundren patients underwent high-resolution dynamic ultrasound imaging of the carotid bifurcation immediately before cerebral angiography. The examinations were interpreted independently. A positive ultrasound interpretation indicated the presence of moderate to extensive atheromatous plaque, while a negative interpretation indicated normal vessels or minimal atheromatous disease. Ten percent of the ultrasound examinations were technically unsatisfactory. Of the remaining studies, there was satisfactory correlation between ultrasound and angiography in approximately 85% and disagreement in 15%. The majority of ultrasound errors were "false positive" (although these probably represent false-negative angiograms). Although atheromatous disease was accurately detected by ultrasound, stenosis, ulceration, intraluminal thrombus, and vessel occlusion were not reliably identified.