Duplex ultrasonography for the detection of vertebral artery stenosis: A comparison with CT angiography.

ABSTRACT:

Objectives

Vertebrobasilar stenosis is frequent in patients with posterior circulation stroke and it increases risk of recurrence. We investigated feasibility of duplex ultrasonography (DUS) for screening for extracranial vertebral artery stenosis and compared it with CT angiography (CTA).

Materials and methods

We gathered data on 337 consecutive patients who had DUS because of posterior circulation stroke or TIA. Matching CTA studies were retrieved and used as reference. Stenosis on CTA was considered "significant" if >50%, at DUS if Peak Systolic Velocity (PSV) > 140 cm/s for the V1 segment and PSV > 125 cm/s for the V2 segment. We determined the area under the ROC curve (AUROC). In addition, we calculated which PSV cut-off value resulted in highest sensitivity with accept

SUBMITTER: Rozeman AD 

PROVIDER: S-EPMC5561311 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature