Correlation between Doppler Velocities and Duplex Ultrasound Carotid Cross-sectional Percent Stenosis

Rodriguez, Guido; Arnaldi, Dario; Campus, Claudio; Mazzei, Debora; Ferrara, Michela; Picco, Agnese; Famà, Francesco; Colombo, Barbara Maria; Nobili, Flavio

doi:10.1016/j.acra.2011.07.016

Cited by 8 publications

(4 citation statements)

References 42 publications

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“…A common cause of ischemic stroke is insufficient blood supply from the internal carotid artery (ICA) to one side of the brain. Currently, vascular imaging techniques are available for evaluation of ICA stenosis and blood velocity in subjects with ischemic stroke (Bleeker et al, 2012; Gough, 2011; Marquering et al, 2012; Rodriguez et al, 2011; Zachrisson et al, 2012). Since oxygenated blood is supplied to the eye and brain by the ICA, assessment of the ocular microcirculation may provide useful information about the cerebral blood supply.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of assessment of conjunctival microvascular hemodynamics in unilateral ischemic stroke

Valeshabad

Wanek

Mukarram

et al. 2015

Microvascular Research

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Since the internal carotid artery supplies blood to both the eye and the brain, ocular microvascular hemodynamics can be altered due to ischemic stroke. The purpose of the current study was to establish the feasibility of conjunctival microcirculation imaging for detection of inter-ocular differences in microvascular hemodynamics in subjects with unilateral ischemic stroke. Conjunctival microcirculation imaging was performed in both eyes of 15 healthy control subjects and 12 subjects following unilateral ischemic stroke. Diameter and axial blood velocity were measured in multiple conjunctival venules of each eye. A two-way repeated measures analysis of variance was performed to determine the effects of stroke (control vs. stroke) and side of stroke (ipsilateral vs. contralateral) on conjunctival diameter and axial blood velocity. There was not a significant main effect of stroke on conjunctival diameter (P = 0.7) or conjunctival axial blood velocity (P = 0.9). There was not a significant main effect of side of stroke on conjunctival diameter (P = 0.8), but there was a significant main effect of side of stroke on conjunctival axial blood velocity (P = 0.02). There was a significant interaction effect between stroke and side of stroke (P = 0.04), indicating conjunctival axial blood velocity was lower in ipsilateral eyes than in contralateral eyes of stroke subjects. Conjunctival axial blood velocity and internal carotid artery blood velocity were correlated in stroke subjects (r = 0.75, P = 0.01, N = 10). Conjunctival microcirculation imaging is a feasible method to detect inter-ocular differences in microvascular hemodynamics in subjects with unilateral ischemic stroke.

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Section: Introductionmentioning

confidence: 99%

Feasibility of assessment of conjunctival microvascular hemodynamics in unilateral ischemic stroke

Valeshabad

Wanek

Mukarram

et al. 2015

Microvascular Research

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show abstract

“…Since the initial parameters known as the "Strandness Criteria" were published in 1987 (44), many different CDUS approaches to classify the severity of stenosis have been proposed (29,36,43,(45)(46)(47)(48)(49)(50)(51) (Table 3). The Society of Radiologists in Ultrasound (SRU) consensus criteria are widely used and recommend PSV cutoff values of >125 cm/s and >230 cm/s to define stenosis ≥50% and ≥70%, respectively (29).…”

Section: Diagnostic Criteria For Extracranial Carotid Artery Stenosismentioning

confidence: 99%

Why are we still debating criteria for carotid artery stenosis?

Brutto¹,

Gornik²,

Rundek³

2020

Ann Transl Med

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The risk of new or recurrent stroke is high among patients with extracranial carotid artery stenosis and the benefit of carotid revascularization is associated to the degree of luminal stenosis. Catheterbased digital subtraction angiography (DSA) as the diagnostic gold-standard for carotid stenosis (CS) has been replaced by non-invasive techniques including duplex ultrasound, computed-tomography angiography, and magnetic resonance angiography (MRA). Duplex ultrasound is the primary noninvasive diagnostic tool for detecting, grading and monitoring of carotid artery stenosis due to its low cost, high resolution, and widespread availability. However, as discussed in this review, there is a wide range of practice patterns in use of ultrasound diagnostic criteria for carotid artery stenosis. To date, there is no internationally accepted standard for the gradation of CS. Discrepancies in ultrasound criteria may result in clinically relevant misclassification of disease severity leading to inappropriate referral, or lack of it, to revascularization procedures, and potential for consequential adverse outcome. The Society of Radiologists in Ultrasound (SRU), either as originally outlined or in a modified form, are the most common criteria applied. However, such criteria have received criticism for relying primarily on peak systolic velocities, a parameter that when used in isolation could be misleading. Recent proposals rely on a multiparametric approach in which the hemodynamic consequences of carotid narrowing beyond velocity augmentation are considered for an accurate stenosis classification. Consensus criteria would provide standardized parameters for the diagnosis of CS and considerably improve quality of care. Accrediting bodies around the world have called for consensus on unified criteria for diagnosis of CS. A healthy debate between professionals caring for patients with CS regarding optimal CS criteria still continues.

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“…Yet, this method has a certain degree of associated trauma, complex operation steps, use of professional digital subtraction machines in the examination process, higher requirements for technology and equipment, and many primary hospitals do not meet these criteria. Further, the cost of diagnosis is high, making it more restricted in clinical application (Rodriguez et al, 2011). With the continuous development of medical technology, carotid artery ultrasound can help laboratory and clinical physicians analyse the degree of carotid artery stenosis in patients with ischaemic cerebrovascular disease and understand the morphology of the vascular wall as an important non-invasive examination method of cervical movement stenosis; this method is widely used because it is safe, convenient, economical, and efficient (Arous et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Comparison Between Carotid Ultrasound and Digital Subtraction Angiography in the Diagnosis of Carotid Artery Stenosis in Patients with Cerebral Infarction

Chen¹,

Chen²,

Liu³

et al. 2022

Int. J. Morphol.

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This study aimed to compare the clinical value of carotid ultrasound and digital subtraction angiography (DSA) for carotid artery stenosis in patients with cerebral infarction. Sixty patients with cerebral infarction underwent carotid ultrasound and DSA. Carotid artery stenosis, degree of stenosis (mild, moderate, severe, and occlusion), and carotid artery plaques were recorded and compared. Carotid stenosis rate was 96.67 % (58/60) and 91.67 % (55/60) on DSA and carotid ultrasound, respectively, and the difference was not statistically significant. Mild, moderate, and severe carotid artery stenosis and occlusion were diagnosed in 35, 28, 20, and 17 arteries, respectively, with DSA, and in 39, 25, 10, and 9 arteries, respectively, with carotid ultrasound. There was a statistically significant difference in the degree of carotid stenosis between the two methods (p<0.05). The kappa value of carotid plaques detected by carotid ultrasound and DSA was 0.776, indicating good consistency. Both carotid ultrasound and DSA are effective for screening carotid artery stenosis and carotid atherosclerotic plaques. While carotid ultrasound is faster and more convenient, DSA can more accurately detect the degree of stenosis and presence of occlusion. Thus, our recommendation is a combination of carotid ultrasound and DSA in clinical settings to improve the convenience and accuracy of diagnosis.

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Correlation between Doppler Velocities and Duplex Ultrasound Carotid Cross-sectional Percent Stenosis

Cited by 8 publications

References 42 publications

Feasibility of assessment of conjunctival microvascular hemodynamics in unilateral ischemic stroke

Feasibility of assessment of conjunctival microvascular hemodynamics in unilateral ischemic stroke

Why are we still debating criteria for carotid artery stenosis?

Comparison Between Carotid Ultrasound and Digital Subtraction Angiography in the Diagnosis of Carotid Artery Stenosis in Patients with Cerebral Infarction

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