Key result
Ultrasound velocity criteria accurately detected ≥70% carotid intrastent restenosis compared to angiography, with ROC curve values of 0.98 to 0.99 for PSV, EDV, and ICA/CCA ratio.
Why the study?
Does carotid ultrasound accurately predict the degree of intrastent restenosis compared to angiography in patients after carotid artery stenting?
Population
Patients who underwent carotid artery stenting (814 CAS procedures)
Comparison
Carotid ultrasound measuring peak systolic… vs Angiography measuring percentage of stenosis
Design
Cohort
Follow-up
up to 6 years
Authors
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Supports customized ultrasound criteria for post-stenting surveillance; leaves open prospective validation before routine adoption.
Cohort (n=814)
Does carotid ultrasound accurately predict the degree of intrastent restenosis compared to angiography in patients after carotid artery stenting?
Effect estimate: ROC 0.99
Customized ultrasound velocity criteria can accurately grade carotid intrastent restenosis after carotid artery stenting, providing a reliable non-invasive follow-up method.
Setacci et al. (2008) conducted a cohort in Carotid intrastent restenosis (n=814). Ultrasound velocity criteria (PSV, EDV, ICA/CCA ratio) vs. Angiography (NASCET method) was evaluated on Intrastent restenosis (ISR) ≥70% (ROC 0.99). Ultrasound velocity criteria accurately detected ≥70% carotid intrastent restenosis compared to angiography, with ROC curve values of 0.98 to 0.99 for PSV, EDV, and ICA/CCA ratio.
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