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Date Published: 08/07/2022
Online Published: 08/07/2022
Abstract Views: 121
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DOI: https://doi.org/10.55046/vjrnm.31.553.2018
Issue
No. 31 (2018)
Section
Scientific research
How to Cite
Tran, D. T., Vu, D. L., Tran, A. T., Nguyen, Q. A., & Pham, M. T. (2022). Ultrasound in diagnosing extracranial carotid artery stenosis. Vietnamese Journal of Radiology and Nuclear Medicine, 31, 86-92. https://doi.org/10.55046/vjrnm.31.553.2018

Ultrasound in diagnosing extracranial carotid artery stenosis

Dr Tran Duc Tuan1, Dr Vu Dang Luu1, Dr Tran Anh Tuan1, Dr Nguyen Quang Anh1, professor Pham Minh Thong1
1 Department of Diagnostic Imaging - Bach Mai Hospital

Main Article Content

Abstract

Objectives: To evaluate the value of 2D and color Doppler ultrasonography (US) for the diagnosis of extracranial artery stenosis, in comparision with digital subtraction angiography (DSA).
Methods: A retrospective of18 patients diagnosed with extracranial carotid artery stenosis using US, based on two methods following (1) ratio of diameter indexes (NASCET method) assessed on 2D US and (2) changes of different indexes of velocity on color Doppler US. The results were compared to DSA, which is considered the gold standard in determining degree of stenosis.
Results: The DSA was used as the gold standard for diagnosing, the incidence of significant stenosis (>70%)following NASCET
basedUS and velocity basedUS are 77,8% and 50%, respectively. The incidence is 77,8% when combining the two methods, same to NASCET basedUS. There was a close correlation between the NASCET method on ultrasound and on DSA with r = 0.674 (p = 0.002). There was no linear correlation between PSV on ultrasound and DSA (p> 0.05).The degree of synergy between the two ultrasound methods is low, with Kappa value of 0.44 (p=0.002).
Conclusion: US is an easly accessible, inexpensive, noninvasive but reliable tool for estimating degree of extracranial carotid artery stenosis and NASCET based 2D ultrasound is more accurate than Doppler ultrasound. 

Article Details

Keywords

extracranial carotid artery stenosis, NASCET, Doppler US, digital subtraction angiography

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