Accuracy of duplex sonography before carotid endarterectomy--a comparison with angiography

Research output: Contribution to journalArticle


OBJECTIVES: The aim of this prospective study was to contribute to the evaluation of the reliability of Duplex sonography (DS) before carotid endarterectomy (CEA). DESIGN: The study was performed prospectively in a university hospital setting. METHODS: Eighty-one consecutive patients aged 49-83 years were examined with DS and carotid angiography (CAG) before CEA. The results of the DS were judged as either confident, or CAG was assessed to be necessary preoperatively. The results from the DS and the CAG were then compared. RESULTS: DS was judged as confident in 148 of the 162 arteries examined. In none of these 148 arteries did CAG change patient management in any way, and the agreement between DS and CAG was good. In the remaining 14 arteries CAG was judged necessary, in 11 arteries because DS assessed the internal carotid artery (ICA) as occluded, which was confirmed by CAG in 10 arteries. In three arteries the reason was poor quality of the DS, however these three arteries were correctly assessed as severely diseased. CONCLUSIONS: This study confirms that DS alone is sufficient in the preoperative evaluation before CEA, provided that CAG is performed whenever DS shows occlusion of the ICA, or when the quality of the DS is poor.


  • F Hansen
  • D Bergqvist
  • Bengt Lindblad
  • Mats Lindh
  • Thomas Mätzsch
  • T Lanne
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Surgery


  • Carotid artery, Duplex sonography, Carotid angiography, Carotid artery stenosis, Doppler
Original languageEnglish
Pages (from-to)331-336
JournalEuropean Journal of Vascular and Endovascular Surgery
Issue number3
Publication statusPublished - 1996
Publication categoryResearch

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Emergency medicine/Medicine/Surgery (013240200), Medical Radiology Unit (013241410), Unit for Clinical Vascular Disease Research (013242410)