scholarly journals Correlation of Color Doppler with Multidetector CT Angiography Findings in Carotid Artery Stenosis

2010 ◽  
Vol 10 ◽  
pp. 1818-1825 ◽  
Author(s):  
Živorad N. Savic ◽  
Lazar B. Davidovic ◽  
Dragan Ž. Sagic ◽  
Milan D. Brajovic ◽  
Srdjan S. Popovic
Keyword(s):  
Carotid Artery ◽  
Ct Angiography ◽  
Carotid Artery Stenosis ◽  
Multidetector Ct ◽  
Color Doppler ◽  
Peak Systolic Velocity ◽  
Artery Stenosis ◽  
Diagnostic Methods ◽  
Consecutive Series ◽  
Multidetector Ct Angiography

The aim of this paper was to examine the correlation between the Color Doppler ultrasound (CD-US) and multidetector CT angiography (MDCTA) diagnostic methods, and to define the degree and extent of stenosis in patients with internal carotid artery stenosis. This was a cross-sectional study with a consecutive series of patients. All US examinations were always carried out by the same physician-angiologist, while all CT examinations were always carried out by the same physician-radiologist. Both worked independently from each other. The stenosis area was measured at the narrowest point by NASCET criteria for US/CT. Peak systolic velocity (PSV) over 210 cm/sec and end diastolic velocity (EDV) over 110 cm/sec criteria were applied for stenoses with lumen narrowed over 70%, while PSV under 130 cm/sec and EDV under 100 cm/sec criteria were applied for those with lumen narrowed under 70%. A total of 124 carotid arteries were observed; namely, 89 narrowed and 68 surgically treated. All patients were reviewed by US and then by MDCTA; patients with 70–99% stenosis underwent surgery. The correlation coefficient between stenosis degree measured by US and MDCTA was 0.922;p< 0.01. The average difference between US and MDCTA diagnostic methods was 3% (Z = -1.438,p> 0.05). The US and CT matching level for stenoses from 70 to 99% was very high (κ = 0.778,p< 0.01). In conclusion, there is a highly significant statistical correlation among both diagnostic methods when measuring stenosis degree and extent. US is more dependent on the physician, while MDCTA is more objective and independent from the physician. We think it would be appropriate to undertake an MDCTA exam for those patients who are candidates for carotid endarterectomy.

scholarly journals Grading of carotid artery stenosis with multidetector-row CT angiography: visual estimation or caliper measurements?

2009 ◽  
Vol 19 (12) ◽  
pp. 2809-2818 ◽  
Author(s):  
Annet Waaijer ◽  
M. Weber ◽  
M. S. van Leeuwen ◽  
J. Kardux ◽  
W. B. Veldhuis ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Ct Angiography ◽  
Carotid Artery Stenosis ◽  
Artery Stenosis ◽  
Visual Estimation ◽  
Multidetector Row Ct ◽  
Multidetector Row

Carotid artery stenosis: Reproducibility of automated 3D CT angiography analysis method

2004 ◽  
Vol 28 (5) ◽  
pp. 387
Author(s):  
Z Zhang ◽  
MH Berg ◽  
AEJ Ikonen ◽  
R Vanninen ◽  
HI Manninen
Keyword(s):  
Carotid Artery ◽  
Ct Angiography ◽  
Carotid Artery Stenosis ◽  
Artery Stenosis ◽  
3D Ct ◽  
Analysis Method ◽  
3D Ct Angiography

scholarly journals Diagnostic dilemmas of multislice CT angiography in the evaluation of the degree of common carotid artery stenosis

2010 ◽  
Vol 138 (7-8) ◽  
pp. 494-497
Author(s):  
Dragoslav Nenezic ◽  
Slobodan Tanaskovic ◽  
Predrag Gajin ◽  
Nenad Ilijevski ◽  
Goran Vucurevic
Keyword(s):  
Carotid Artery ◽  
Ct Angiography ◽  
Common Carotid Artery ◽  
Carotid Artery Stenosis ◽  
Soft Tissues ◽  
Multislice Ct ◽  
Diagnostic Procedures ◽  
Left Common Carotid Artery ◽  
Artery Stenosis ◽  
High Grade

Introduction. Multislice CT angiography (CTA) is a noninvasive and quick technique to image carotid artery stenosis, as well as intracerebral vasculature. Modern multidetector CTA produces images with a high resolution of, not only the contrast-filled lumen, but also of the vessel wall and the surrounding soft tissues. Multiple studies have verified the ability of CTA to provide an accurate representation of the degree of carotid stenosis in comparison to digital subtraction angiography, both for moderate and high-grade stenosis. Because of its fast and accurate vessel imaging, CT angiography is increasingly used in the assessment of carotid artery stenosis. Case Outline. A 37-year-old female patient was admitted at the Vascular Surgery Clinic of the Institute for Cardiovascular Diseases 'Dedinje', Belgrade, for angiography and endovascular procedure of a high-grade stenosis of the left common carotid artery based on Multislice CT findings brought by the patient. She complained of problems which we considered to be the result of cerebral circulation ischemia. After detailed diagnostic procedures, we concluded that no pathological lesions could be verified either on the left common carotid artery or other supraaortic branches. Therefore, the patient was discharged for further neurological examinations. Conclusion. Although Multislice CTA has many advantages over classical angiography, its validity should be taken with reserve, especially in younger patients.

scholarly journals An Ultrasound Model to Predict the Short-Term Effects of Endovascular Stent Placement in the Treatment of Carotid Artery Stenosis

2021 ◽  
Vol 7 ◽  
Author(s):  
Sheng-Jiang Chen ◽  
Rui-Rui Liu ◽  
Yi-Ran Shang ◽  
Yu-Juan Xie ◽  
Xiao-Han Guo ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Stent Placement ◽  
Carotid Artery Stenosis ◽  
Resistance Index ◽  
Peak Systolic Velocity ◽  
Artery Stenosis ◽  
Endovascular Stent ◽  
Improvement Rate ◽  
Preoperative Ultrasound ◽  
Endovascular Stent Placement

Purpose: The present study aimed to explore the predictive ability of an ultrasound linear regression equation in patients undergoing endovascular stent placement (ESP) to treat carotid artery stenosis-induced ischemic stroke.Methods: Pearson's correlation coefficient of actual improvement rate (IR) and 10 preoperative ultrasound indices in the carotid arteries of 64 patients who underwent ESP were retrospectively analyzed. A predictive ultrasound model for the fitted IR after ESP was established.Results: Of the 10 preoperative ultrasound indices, peak systolic velocity (PSV) at stenosis was strongly correlated with postoperative actual IR (r = 0.622; P &lt; 0.01). The unstable plaque index (UPI; r = 0.447), peak eccentricity ratio (r = 0.431), and plaque stiffness index (β; r = 0.512) moderately correlated with actual IR (P &lt; 0.01). Furthermore, the resistance index (r = 0.325) and the dilation coefficient (r = 0.311) weakly correlated with actual IR (P &lt; 0.05). There was no significant correlation between actual IR and the number of unstable plaques, area narrowing, pulsatility index, and compliance coefficient. In combination, morphological, hemodynamic, and physiological ultrasound indices can predict 62.39% of neurological deficits after ESP: fitted IR = 0.9816 – 0.1293β + 0.0504UPI – 0.1137PSV.Conclusion: Certain carotid ultrasound indices correlate with ESP outcomes. The multi-index predictive model can be used to evaluate the effects of ESP before surgery.

Management of carotid artery stenosis in patients with coexistent unruptured intracranial aneurysms

2020 ◽  
Vol 132 (1) ◽  
pp. 94-97 ◽  
Author(s):  
Tiziano Tallarita ◽  
Thomas J. Sorenson ◽  
Lorenzo Rinaldo ◽  
Gustavo S. Oderich ◽  
Thomas C. Bower ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Carotid Artery Stenosis ◽  
Intracranial Aneurysms ◽  
Early Period ◽  
Aneurysm Rupture ◽  
Artery Stenosis ◽  
Consecutive Series ◽  
Carotid Revascularization ◽  
Unruptured Intracranial Aneurysms ◽  
Risk Of Rupture

OBJECTIVEConcomitant unruptured intracranial aneurysms (UIAs) are present in patients with carotid artery stenosis not infrequently and result in unique management challenges. Thus, we investigated the risk of rupture of an aneurysm after revascularization of a carotid artery in a contemporary consecutive series of patients seen at our institution.METHODSData from patients who underwent a carotid revascularization in the presence of at least one concomitant UIA at our institution from 1991 to 2018 were retrospectively reviewed. Patients were evaluated for the incidence of aneurysm rupture within 30 days (early period) and after 30 days (late period) of carotid revascularization, as well as for the incidence of periprocedural complications from the treatment of carotid stenosis and/or UIA.RESULTSOur study included 53 patients with 63 concomitant UIAs. There was no rupture within 30 days of carotid revascularization. The overall risk of rupture was 0.87% per patient-year. Treatment (coiling or clipping) of a concomitant UIA, if pursued, could be performed successfully after carotid revascularization.CONCLUSIONSCarotid artery revascularization in the setting of a concomitant UIA can be performed safely without an increased 30-day or late-term risk of rupture. If indicated, treatment of the UIA can take place after the patient recovers from the carotid procedure.

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