Evaluation of carotid artery outward remodeling by T1-weighted magnetic resonance imaging in carotid endarterectomy and stenting

Maruyama, Daisuke; Fukuda, Kenji; Kataoka, Hiroharu; Morita, Yoshiaki; Nishimura, Kunihiro; Kawamura, Yoichiro; Iihara, Koji

doi:10.1016/j.jvs.2015.01.029

Cited by 11 publications

(4 citation statements)

References 31 publications

(40 reference statements)

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“…Full publications were retrieved of 164 studies published up to 31 December 2016. Seventy-nine studies were excluded for the following reasons: MRI to detect cerebral ischaemia did not include DWI sequences, or DWI was not done in all patients (n = 15); 22–36 no DWI was performed before treatment (n = 11); 37–47 post-procedural DWI was performed more than seven days after treatment (n = 3); 48–50 the number of DWI+ patients or procedures could not be extracted (n = 6); 51–56 or information on procedural stroke was lacking or patients with procedural stroke were excluded from the analysis (n = 6). 49,57–68 One study was excluded because the analysis was restricted to patients with available six months’ follow-up who constituted less than half of the study population (n = 1).…”

Section: Resultsmentioning

confidence: 99%

Silent brain infarcts on diffusion-weighted imaging after carotid revascularisation: A surrogate outcome measure for procedural stroke? A systematic review and meta-analysis

Traenka

Engelter

Brown³

et al. 2019

European Stroke Journal

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Aim: To investigate whether lesions on diffusion-weighted imaging (DWIþ) after carotid artery stenting (CAS) or endarterectomy (CEA) might provide a surrogate outcome measure for procedural stroke. Materials and Methods: Systematic MedLine V R database search with selection of all studies published up to the end of 2016 in which DWI scans were obtained before and within seven days after CAS or CEA. The correlation between the underlying log odds of stroke and of DWIþ across all treatment groups (i.e. CAS or CEA groups) from included studies was estimated using a bivariate random effects logistic regression model. Relative risks of DWIþ and stroke in studies comparing CAS vs. CEA were estimated using fixed-effect Mantel-Haenszel models. Results: We included data of 4871 CAS and 2099 CEA procedures (85 studies). Across all treatment groups (CAS and CEA), the log odds for DWIþ was significantly associated with the log odds for clinically manifest stroke (correlation coefficient 0.61 (95% CI 0.27 to 0.87), p ¼ 0.0012). Across all carotid artery stenting groups, the correlation coefficient was 0.19 (p ¼ 0.074). There were too few CEA groups to reliably estimate a correlation coefficient in this subset alone. In 19 studies comparing CAS vs. CEA, the relative risks (95% confidence intervals) of DWIþ and stroke were 3.83 (3.17-4.63, p < 0.00001) and 2.38 (1.44-3.94, p ¼ 0.0007), respectively. Discussion: This systematic meta-analysis demonstrates a correlation between the occurrence of silent brain infarcts on diffusion-weighted imaging and the risk of clinically manifest stroke in carotid revascularisation procedures. Conclusion: Our findings strengthen the evidence base for the use of DWI as a surrogate outcome measure for procedural stroke in carotid revascularisation procedures. Further randomised studies comparing treatment effects on DWI lesions and clinical stroke are needed to fully establish surrogacy.

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Section: Resultsmentioning

confidence: 99%

Silent brain infarcts on diffusion-weighted imaging after carotid revascularisation: A surrogate outcome measure for procedural stroke? A systematic review and meta-analysis

Traenka

Engelter

Brown³

et al. 2019

European Stroke Journal

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“…Only the right carotid PTS decreased with age, and no marked difference was observed in the parameters of TS, including bilateral MTS and left PTS. Various reasons for participating in that: (1) Mechanical models of artery, such as WT and TS, derived from Laplace's law can be used to relate the arterial inner radius (r) and internal pressure (P).. The WT was defined as P × r [18].…”

Section: Discussionmentioning

confidence: 99%

“…Arterial remodeling reflects adaptation of the vessel wall to mechanical and hemodynamic stimuli and contributes to the progression of cardiovascular and cerebrovascular diseases [1,2]. On the other hand, the biomechanical behaviors of arteries are adjusted to correspond to the arterial remodeling [3].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of tensile stress in carotid artery: evidence from ultrasonography

Luo

et al. 2019

Preprint

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“…It is essential to recognize early changes in vascular function and morphology to help identify individuals at risk for cardiovascular disease. Arterial remodeling or dilatation of carotid arteries has been shown to be related to increased mechanical stress from high pulsatile loads, leading to breakdown of elastic fibers within the arterial wall [1, 2]. Arterial remodeling is a potentially important pathophysiologic change in the development of atherosclerosis, which acts to counteract the development of lumen compromise of large artery by mutual adaptation of diameter to wall thickening [3].…”

Section: Introductionmentioning

confidence: 99%

Ultrasound assessment of tensile stress in carotid arteries of healthy human subjects with varying age

Luo

2019

BMC Med Imaging

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BackgroundArterial remodeling is thought to reflect the adaptation of the vessel wall to mechanical and hemodynamic stimuli and contributes to the progression of cardiovascular and cerebrovascular diseases. Tensile stress (TS) is one of the mechanical properties of the artery wall. The purpose of this study was to investigate the tensile stress change (TS) of carotid artery with varying viscoelasticity in healthy subjects within two groups of different ages.MethodsForty-five subjects were recruited and randomly assigned into the group at the age above 50 years and below 50 years. The carotid arteries were examined by ultrasonography, using the techniques of shear wave elastography (SWE), shear wave dispersion (SWD) and radiofrequency (RF) -based ultrasound. The following values, including elastic modulus (SWER) and viscous index (SWDR), as well as the peak and mean TS of the left and right carotid arteries (L-PTS, R-PTS, L-MTS and R-MTS) were measured. The correlations between SWER, SWDR and tensile stress were evaluated.ResultsThe SWER and SWDR of carotid arteries are lower in the subjects ≥50 years old than the subjects younger than 50 years (SWER, 10.29 ± 9.57 kPa VS 17.24 ± 14.07 kPa; SWDR, 11.99 ± 3.51 (m/s)/kHz VS 13.97 ± 3.71 (m/s)/kHz, P < 0.05). The R-PTS was lower in the group with younger age (P < 0.05). Pearson correlation analysis showed that SWER of carotid artery was positively correlated with the parameters of tensile stress, R-PTS, R-MTS, L-PTS and L-MTS(r = 0.218, r = 0.359, r = 0.209 and r = 0.369, respectively, P < 0.05). However, SWDR of carotid arteries was not significantly associated with TS.ConclusionUltrasonic shear wave imaging could be used to quantitatively assess carotid viscoelasticity. The carotid TS was related to its elasticity while little related to its viscosity, suggesting that mechanical properties of the arterial wall might be better revealed.Trial registrationDate of our trial registration: 2018-06-11. Registered with the official website of China Clinical Trial Registration Center (ChiCTR1800016590)

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Evaluation of carotid artery outward remodeling by T1-weighted magnetic resonance imaging in carotid endarterectomy and stenting

Abstract: CRI and rSI provide complementary information for the prediction of high-risk plaques associated with CAS but not with CEA. Preoperative evaluation with T1-MRI facilitates the selection of a treatment strategy for carotid artery stenosis.

Cited by 11 publications

References 31 publications

Silent brain infarcts on diffusion-weighted imaging after carotid revascularisation: A surrogate outcome measure for procedural stroke? A systematic review and meta-analysis

Silent brain infarcts on diffusion-weighted imaging after carotid revascularisation: A surrogate outcome measure for procedural stroke? A systematic review and meta-analysis

Evaluation of tensile stress in carotid artery: evidence from ultrasonography

Ultrasound assessment of tensile stress in carotid arteries of healthy human subjects with varying age

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