Grading carotid stenosis with ultrasound. An interlaboratory comparison

Stroke; a Journal of Cerebral Circulation
A V AlexandrovJ C Grotta

Abstract

Carotid ultrasound had modest accuracy in the North American Symptomatic Carotid Endarterectomy Trial (NASCET) of carotid endarterectomy in predicting severe carotid stenosis when a 250-cm/s peak systolic velocity (PSV) criterion was applied to different laboratories. We compared the performance of two independent laboratories using similar equipment (ATL-HDI Ultramark 9) but different interpretation criteria. Consecutive patients who underwent both color-coded duplex ultrasound and intra-arterial digital subtraction angiography were studied. PSV was determined with angle correction at the site of the tightest arterial narrowing. Carotid stenosis was measured on angiograms using the North American (N) method. Sensitivity, specificity, and positive (PPV) and negative (NPV) predictive values with 95% confidence intervals were calculated for each laboratory. In 87 patients, 174 bifurcations were imaged. A 250-cm/s criterion was the best single predictor of a > 70% N stenosis at one laboratory (sensitivity 93% [95% confidence interval, 85 to 101], specificity 86% [76 to 96], PPV 75% [62 to 87], and NPV 96% [90 to 102]) but had modest parameters at the other laboratory (50% [34 to 64], 87%, [77 to 97], 60 [44 to 76], and 91 [82 to 1...Continue Reading

Citations

Jan 9, 2001·Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions·G NewJ W Moses
Mar 20, 2002·Current Neurology and Neuroscience Reports·Dean C C Johnston, Larry B Goldstein
Apr 9, 2002·Ultrasound in Medicine & Biology·Nicholas ThomasSoundrie Padayachee
Jun 22, 1999·Ultrasound in Medicine & Biology·P R HoskinsT Anderson
Jul 1, 1999·Ultrasound in Medicine & Biology·P R Hoskins
Dec 19, 2000·European Journal of Ultrasound : Official Journal of the European Federation of Societies for Ultrasound in Medicine and Biology·G E MeadJ M Wardlaw
Mar 16, 2000·The British Journal of Surgery·J M PerkinsT R Magee
Jul 21, 2001·Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging·I ChristouA V Alexandrov
Nov 11, 1999·Cardiovascular and Interventional Radiology·J BakkerF J Beek
Jan 18, 2006·The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques·Colin HonishFahrad Pirouzmand
Oct 2, 2002·Radiology·Robert A BucekJohannes Lammer
Jul 4, 2001·Topics in Magnetic Resonance Imaging : TMRI·J E Heiserman
Jul 7, 2010·Journal of the Chinese Medical Association : JCMA·Yee-Yung NgShiao-Chi Wu
Oct 17, 2009·Survey of Ophthalmology·Efstratios MendrinosConstantin J Pournaras
Nov 9, 2005·Journal of Vascular Surgery·Elaine Y L LuiK Wayne Johnston
Jul 12, 2001·Clinical Radiology·A J GoddardD Birchall
Jul 28, 2009·Journal of Vascular Surgery·Afshin S JahromiClaudio S Cinà
Dec 9, 1998·Journal of Vascular Surgery·M M LevyJ P Carpenter
Dec 3, 2008·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·C P OatesP Khodabakhsh
Mar 10, 2001·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·G D GriffithsD Charlesworth
Jul 20, 2002·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·A LongA Branchereau
Jul 8, 1999·Journal of Vascular Surgery·J GolledgeR M Greenhalgh
Apr 16, 2002·Vascular and Endovascular Surgery·Kent S MacKenzieHisham S Bassiouny
Apr 22, 2003·Vascular and Endovascular Surgery·Karl LogasonChrister Ljungman
May 16, 2000·European Journal of Neurology : the Official Journal of the European Federation of Neurological Societies·L BönigW Zaunbauer
Aug 29, 2020·Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging·Jonathan R GomezAarti Sarwal
Jul 17, 1999·Medizinische Klinik·C Ranke, H J Trappe
Jul 22, 2017·Annals of Hematology·G GraziadeiM D Cappellini

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