The validation of duplex scanning and continuous wave doppler imaging: A comparison with conventional angiography

Hames, T.K.; Humphries, K.N.; Ratliff, David; Birch, Stephen; Gazzard, V.M.; Chant, A.D.B.

doi:10.1016/0301-5629(85)90076-6

Cited by 25 publications

(2 citation statements)

References 14 publications

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“…Another factor that makes it challenging to examine the vessel is the deposition of calcium in the carotid artery's wall. In patients with stenosis high in the neck, unusually long lesions or arterial kinking, other diagnostic tests should be recommended [7]. The abovementioned limitations of DUS may bring into question its accuracy and reliability in the assessment of carotid artery stenosis and perhaps encourage the use of a more reliable imaging tool such as MRI for initial evaluation of the carotids in stroke patients.…”

Section: Discussionmentioning

confidence: 99%

Impact of MRI Characterization of the Carotid Artery in the Understanding of Stroke

S¹,

Ortiz²,

Fumero³

et al. 2017

OMICS J Radiol

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Carotid artery stenosis accounts for approximately 10% of ischemic strokes. Improved methods of diagnosis of cerebrovascular atherosclerosis would result in significant improvement in quality of life and major savings in health care costs. Imaging plays a critical role evaluating patients suspected of acute stroke. Magnetic Resonance Imaging (MRI's) significant advantages over DUS in carotids imaging can pay off its cost by means of improved patient outcome. Although DUS is frequently performed to evaluate carotid disease, there is nonuniformity in practice among laboratories. MRI can detect and quantify major compositional features of the carotid plaque and comprehensively evaluate its complications. A high level of agreement exists between high-resolution in vivo MRI, gross, and histological findings on the thickness and sites of potential rupture of the fibrous cap in advanced carotid artery atherosclerosis. MRI is capable of classifying and distinguishing different stages of atherosclerotic lesions. It can also examine the mechanisms of regression, progression, and endothelial dysfunction of the carotid plaque. Carotid MRI is a histologically validated, non-invasive imaging method that can track atherosclerotic disease progression and regression. It can quantitatively evaluate parameters associated with plaque morphology and composition. MRI is able to quantify high-grade carotid artery stenosis and occlusion with good accuracy and reproducibility and provides an opportunity to prospectively examine the relationship between plaque features and subsequent cerebrovascular events. The aim of this article is to examine the efficacy of MRI versus DUS in identifying vulnerable carotid lesions in the acute stroke patient that can account for stroke etiology or mechanism.

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Section: Discussionmentioning

confidence: 99%

Impact of MRI Characterization of the Carotid Artery in the Understanding of Stroke

S¹,

Ortiz²,

Fumero³

et al. 2017

OMICS J Radiol

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“…This observation is endorsed by publications on Doppler ultrasound showing that sonographic pulsatility measurements are likewise not sensitive enough to reliably distinguish between normal and mildly affected arteries. This is explained by the fact that the normal values depend not only on the examined vessel section, but also on features of peripheral resistance (17,20,35). Sonographic studies comparing the results of spectral waveform analysis in peripheral arteries with x-ray angiographic findings re- port a sensitivity of 8 3 4 6 % and a specificity of 81-96% in distinguishing normal from diseased arteries (18, 37), and a sensitivity of 77-87% and a specifity of 88-99% in identifying stenoses exceeding 50% diameter reduction (18, 2 0 , 3 7 , 38).…”

Section: Discussionmentioning

confidence: 99%

MR pulsatility measurements in peripheral arteries: Preliminary results

Krug

Kugel

Harnischmacher

et al. 1995

Magnetic Resonance in Med

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Phase contrast flow velocity measurements were performed in six healthy volunteers and 30 patients with arteriosclerotic disease. The iliac arteries were investigated in 8 cases and the femoral arteries in 28 cases. In the first 24 patients, 16 evenly distributed data sets were acquired during one cardiac cycle. In the last 12 patients, a trigger pulse followed by the acquisition of 30 evenly distributed data sets was applied every second heart beat. This procedure allowed data to be acquired over a full heart cycle without any acquisition gap. The measured flow velocities were displayed as function of time. Systolic acceleration, postsystolic deceleration and pulsatility of flow velocity were calculated and compared with stenosis grades determined from DSA angiograms. Flattening of the flow velocity patterns was found to correlate with the local severity of arteriosclerotic disease.

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Duplex ultrasound for diagnosing symptomatic carotid stenosis in the extracranial segments

Cassola

Baptista-Silva

Nakano

et al. 2022

Cochrane Database of Systematic Reviews

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The validation of duplex scanning and continuous wave doppler imaging: A comparison with conventional angiography

Cited by 25 publications

References 14 publications

Impact of MRI Characterization of the Carotid Artery in the Understanding of Stroke

Impact of MRI Characterization of the Carotid Artery in the Understanding of Stroke

MR pulsatility measurements in peripheral arteries: Preliminary results

Duplex ultrasound for diagnosing symptomatic carotid stenosis in the extracranial segments

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