| Carotid stenosis assessed with a 4-dimensional semiautomated Doppler system. | |
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MedLine Citation:
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PMID: 18716143 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to compare peak systolic velocities (PSVs) and the degree of stenosis obtained with a real-time 3-dimensional (ie, 4-dimensional) Doppler ultrasound scanner (Encore PV; VueSonix Sensors Inc, Wayne, PA) to conventional Doppler ultrasound imaging of the carotid arteries (common [CCA], internal [ICA], and external [ECA]). A secondary goal was to assess Encore volume flow measurements. METHODS: Seventy patients referred for clinical carotid ultrasound participated in this pilot study. Peak systolic velocities of the CCA, ECA, and ICA were obtained bilaterally. The degree of stenosis in the ICA was calculated based on the ICA PSV and ICA/CCA PSV ratio. The Encore detects all 3-dimensional blood flow velocity vectors within 10-s longitudinal volumes of the ICA, ECA, and CCA. On the Encore, a reader determined the centerline of the vessels. The PSV and volume flow were then automatically calculated. The flow measurement error was obtained by comparing the CCA flow to the ICA and ECA flow. Data were compared using linear regression, intraclass correlation coefficients (ICCs), and Bland-Altman analysis. RESULTS: Due to technical difficulties, only 59 patients (323 vessel segments) were available for analysis. There was good agreement between methods for assessing the degree of stenosis based on the ICA PSV (ICC = 0.83; P < .0001) and, to a lesser degree, on the ICA/CCA PSV ratio (ICC = 0.65; P < .0001). Peak systolic velocity measurements obtained with conventional ultrasound and the Encore correlated in all vessels (r >or= 0.32; P < .002), and Bland-Altman analysis showed reasonable variations. The Encore mean volume flow error +/- SD was -4.1% +/- 66.4% and was not biased (P = .57). CONCLUSIONS: A new semiautomated 4-dimensional Doppler device is comparable to conventional Doppler ultrasound for assessment of carotid stenosis. |
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Authors:
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Flemming Forsberg; Alan D Stein; Daniel A Merton; Kathryn J Lipcan; Donald Herzog; Laurence Parker; Laurence Needleman |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine Volume: 27 ISSN: 1550-9613 ISO Abbreviation: J Ultrasound Med Publication Date: 2008 Sep |
Date Detail:
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Created Date: 2008-08-21 Completed Date: 2008-11-12 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 8211547 Medline TA: J Ultrasound Med Country: United States |
Other Details:
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Languages: eng Pagination: 1337-44 Citation Subset: IM |
Affiliation:
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Department of Radiology, Division of Ultrasound, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA. flemming.forsberg@jefferson.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Artificial Intelligence* Carotid Stenosis / ultrasonography* Echocardiography, Doppler / instrumentation*, methods Female Humans Image Interpretation, Computer-Assisted / instrumentation* Imaging, Three-Dimensional / instrumentation*, methods Male Middle Aged Pattern Recognition, Automated / methods* Reproducibility of Results Sensitivity and Specificity |
| Grant Support | |
ID/Acronym/Agency:
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HL065771/HL/NHLBI NIH HHS; R44 HL065771-02/HL/NHLBI NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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