American Journal of Roentgenology, Vol 172, 207-212, Copyright © 1999 by American Roentgen Ray Society

ARTICLES

The value of internal carotid systolic velocity ratio for assessing carotid artery stenosis with Doppler sonography

G Soulez, E Therasse, P Robillard, A Fontaine, N Denbow, P Bourgouin and VL Oliva
Department of Radiology, Centre Hospitalier de l'Universite de Montreal, Quebec, Canada.

OBJECTIVE: The purpose of this study was to assess the value of the ratio between the internal carotid systolic velocity (ICSV) at the carotid bulb and the distal internal carotid systolic velocity (DICSV) for the detection of carotid artery stenosis. SUBJECTS AND METHODS: Two hundred eleven patients were enrolled in a prospective study comparing several Doppler measurements with carotid angiography. The following spectral measurements were obtained with Doppler sonography: ICSV/DICSV ratio, ICSV, ICSV/common carotid systolic velocity (CCSV) ratio, and internal carotid (end) diastolic velocity (ICDV). Receiver operating characteristic curves were generated for two groups: the first group being 365 carotid arteries for which all Doppler measurements were successfully obtained and the second being a subgroup of 258 carotid arteries for which an ICSV of 100 cm/sec or greater was present. RESULTS: In the group of 365 carotid arteries, the ICSV/DICSV ratio improved the detection of stenosis of 60% or greater as compared with the ICDV (p = .03). In 258 carotid arteries with an ICSV of 100 cm/sec or greater, the ICSV/DICSV ratio allowed for a better angiographic correlation for identifying stenoses of 60% or greater and 70% or greater as compared with ICSV (p = .006 and .023, respectively), ICSV/CCSV (p = .0013 and .003, respectively), and ICDV (p = .0015 and .020, respectively). CONCLUSION: Using the ICSV/DICSV ratio for the Doppler detection of carotid artery stenosis is advantageous when the ICSV is 100 cm/sec or greater.
CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				G. M. Hathout, J. R. Fink, S. M. El-Saden, and E. G. Grant Sonographic NASCET Index: A New Doppler Parameter for Assessment of Internal Carotid Artery Stenosis AJNR Am. J. Neuroradiol., January 1, 2005; 26(1): 68 - 75. [Abstract] [Full Text] [PDF]

				E. M. Hecht, G. M. Israel, G. A. Krinsky, W. Y. Hahn, D. C. Kim, I. Belitskaya-Levy, and V. S. Lee Renal Masses: Quantitative Analysis of Enhancement with Signal Intensity Measurements versus Qualitative Analysis of Enhancement with Image Subtraction for Diagnosing Malignancy at MR Imaging Radiology, June 23, 2004; (2004) 2322031209. [Abstract] [Full Text]

				E. G. Grant, C. B. Benson, G. L. Moneta, A. V. Alexandrov, J. D. Baker, E. I. Bluth, B. A. Carroll, M. Eliasziw, J. Gocke, B. S. Hertzberg, et al. Carotid Artery Stenosis: Gray-Scale and Doppler US Diagnosis--Society of Radiologists in Ultrasound Consensus Conference Radiology, November 1, 2003; 229(2): 340 - 346. [Abstract] [Full Text] [PDF]

				P. J. Nederkoorn, Y. van der Graaf, and M.G. M. Hunink Duplex Ultrasound and Magnetic Resonance Angiography Compared With Digital Subtraction Angiography in Carotid Artery Stenosis: A Systematic Review Stroke, May 1, 2003; 34(5): 1324 - 1331. [Abstract] [Full Text] [PDF]

				M. Vergara, E. G. Grant, S. M. El Saden, and G. M. Hathout Duplex US for the Estimation of Internal Carotid Stenosis Drs Grant and colleagues respond: Radiology, May 1, 2001; 219(2): 575 - 577. [Full Text]