New duplex ultrasound scan criteria for managing symptomatic 50% or greater carotid stenosis

Winkelaar, Gerrit B.; Chen, Jerry C.; Salvian, Anthony J.; Taylor, David; Teal, Philip; Hsiang, York

doi:10.1016/s0741-5214(99)70239-9

Cited by 32 publications

(19 citation statements)

References 17 publications

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“…The accuracy of quantification of stenoses less than 50% is generally poor, and clinical significance of mild narrowing is questionable in most cases. The North American Symptomatic Carotid Endarterectomy Trial [11]and Cina et al [12]concluded that symptomatic patients only benefit from surgery when their carotid artery is 50% or more stenosed. 29.6% (21 of 71) NPC patients in our study showed more than 50% carotid artery stenosis.…”

Section: Discussionmentioning

confidence: 99%

Sonographic Characterisation of Radiation-Induced Carotid Artery Stenosis

Lam

Liu

Leung³

et al. 2002

Cerebrovasc Dis

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Background and Purpose: To study the distribution, extent and sonographic characterisation of radiation-induced carotid artery stenosis in nasopharyngeal carcinoma (NPC) patients. Methods: The distribution of plaques, the extent of stenosis, and the sonographic characterisation of the plaque at maximum stenosis were recorded in 71 NPC patients. The results were compared with the ultrasound results of a control group of 142 patients presenting with symptoms of cerebrovascular disease or carotid bruit. Results: NPC patients had a higher incidence of carotid stenosis (77 vs. 50.7%). The common carotid arteries were most commonly affected by radiation-induced stenosis (93/142 vs. 37/284 in the control group), whereas the carotid bulb was the most commonly affected (56/284) site in the control group. Significantly more NPC patients had moderate-to-severe stenosis (21/71 vs. 27/142). Analysis of the sonographic appearance of radiation-induced and atherosclerotic plaques showed more diffuse involvement in the post-radiation group. Non-calcified plaques and intraplaque hypoechoic foci were also more frequent in the post-radiation group. Conclusions: Radiation-induced carotid stenosis is more diffuse in distribution, is associated with more severe luminal stenosis and has different sonographic plaque characterisation compared with carotid stenosis without radiation exposure.

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Section: Discussionmentioning

confidence: 99%

Sonographic Characterisation of Radiation-Induced Carotid Artery Stenosis

Lam

Liu

Leung³

et al. 2002

Cerebrovasc Dis

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“…121 This study measured stenosis using the ECST method, 72 whereas the other papers all used the NASCET method. 93,104,120 There were too few data in the ROC plot for 50-69% stenosis to say whether the points lay on a curve or not ( Figure 14). The results of testing for threshold effects using correlation coefficients are given in of 0-49% stenosis or occluded is very high, and this meta-analysis includes a possible outlier 93 ).…”

Section: Exploration Of Heterogeneitymentioning

confidence: 99%

Accurate, practical and cost-effective assessment of carotid stenosis in the UK

Wardlaw

Chappell²,

Stevenson³

et al. 2006

Health Technol Assess

146

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“…13,14 We have followed the NASCET study and therefore defined stenosis of greater than 50% as significant stenosis. Conventional angiography is the gold standard accepted for grading of arterial stenosis.…”

Section: On 12 Patientsmentioning

confidence: 99%