Key Points
- Identify common technical and interpretive pitfalls in carotid Doppler ultrasonography and describe diagnostic strategies to improve the evaluation of neurovascular occlusive disease.
- Evaluated interpretive limitations and technical sources of error in extracranial carotid Doppler ultrasonography relative to conventional angiography.
- Analyzed hemodynamic patterns and anatomical factors that disrupt standard peak systolic velocity measurements.
- Identified critical diagnostic pitfalls affecting stenosis grading, including pseudonormalization in near-occlusion, acoustic shadowing from calcified plaque, and misinterpreting pseudo-occlusion as total occlusion.
- Demonstrated that relying strictly on peak systolic velocity without analyzing spectral waveforms or accounting for contralateral stenosis causes misclassification of disease severity.
Structured PICO
IInterventionUltrasonography of the head and neck
Understanding the technical and interpretive pitfalls of carotid ultrasonography is essential for accurate diagnosis of neurovascular occlusive disease.