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  • Gao, Wenjing  (5)
  • 1
    Online Resource
    Online Resource
    Video_3.WMV
    Frontiers Media SA ; 2022
    In:  Frontiers in Cardiovascular Medicine Vol. 9 ( 2022-11-17)
    Details
    In: Frontiers in Cardiovascular Medicine, Frontiers Media SA, Vol. 9 ( 2022-11-17)
    Abstract: To investigate the feasibility of the vector flow imaging (V Flow) technique to measure peripheral arterial hemodynamic parameters, including wall shear stress (WSS) and turbulence index (Tur) in healthy adults, and compare the results in different arteries. Materials and methods Fifty-two healthy adult volunteers were recruited in this study. The maximum and mean values of WSS, and the Tur values at early-systole, mid-systole, late-systole, and early diastole for total 156 normal peripheral arteries [common carotid arteries (CCA), subclavian arteries (SCA), and common femoral arteries (CFA)] were assessed using the V Flow technique. Results The mean WSS values for CCA, SCA, and CFA were (1.66 ± 0.68) Pa, (0.62 ± 0.30) Pa, and (0.56 ± 0.27) Pa, respectively. The mean Tur values for CCA, SCA, and CFA were (0.46 ± 1.09%), (20.7 ± 9.06%), and (24.63 ± 17.66%), respectively. The CCA and SCA, as well as the CCA and CFA, showed statistically significant differences in the mean WSS and the mean Tur ( P & lt; 0.01). The mean Tur values had a negative correlation with the mean WSS; the correlation coefficient between log(Tur) and WSS is −0.69 ( P & lt; 0.05). Conclusion V Flow technique is a simple, practical, and feasible quantitative imaging approach for assessing WSS and Tur in peripheral arteries. It has the potential to be a useful tool for evaluating atherosclerotic plaques in peripheral arteries. The results provide a new quantitative foundation for future investigations into diverse arterial hemodynamic parameters.
    Type of Medium: Online Resource
    ISSN: 2297-055X
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    DOI: 10.3389/fcvm.2022.956023
    DOI: 10.3389/fcvm.2022.956023.s001
    DOI: 10.3389/fcvm.2022.956023.s002
    DOI: 10.3389/fcvm.2022.956023.s003
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2022
    detail.hit.zdb_id: 2781496-8
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  • 2
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    Online Resource
    Feasibility Study of Combining Wall Shear Stress and Elastography to Assess the Vascular Status of Carotid Artery
    Bentham Science Publishers Ltd. ; 2023
    In:  Current Medical Imaging Reviews Vol. 20 ( 2023-07-18)
    Details
    In: Current Medical Imaging Reviews, Bentham Science Publishers Ltd., Vol. 20 ( 2023-07-18)
    Abstract: At present, early detection of the potential risk of atherosclerosis and prevention is of great significance to reduce the occurrence of stroke. Aim: This study aims to explore the value of combining the wall shear stress measured by ultrasound vector flow imaging technique and sound touch elastography of common carotid artery in normal adults using the Mindray Resona 7 ultrasound system. Methods: Forty volunteers (mean age 39.5 y, 23 females, 17 males) were divided into four groups according to their age. All volunteers underwent ultrasound carotid artery examination, and the values of wall shear stress and elasticity on the posterior wall of the common carotid artery were measured using advanced imaging functions, vector flow imaging technique, and sound touch elastography. Results: Different cut-off values of wall shear stress were used to investigate the significance between two groups with corresponding sound touch elastography values. It can be seen that the statistical difference could be found when the mean wall shear stress was larger than 1.5 Pa approximately (statistical significance was defined when P 〈 0.05), and the sound touch elastography value was positively correlated with the wall shear stress value. Conclusion: This study reveals that the combination of wall shear stress and sound touch elastography is an effective and feasible method for assessing carotid artery health. When the mean wall shear stress value is over 1.5 Pa, the corresponding sound touch elastography value increases significantly. The risk of atherosclerosis increases with the stiffness of blood vessel walls.
    Type of Medium: Online Resource
    ISSN: 1573-4056
    URL: Article
    DOI: 10.2174/1573405620666230327125840
    Language: English
    Publisher: Bentham Science Publishers Ltd.
    Publication Date: 2023
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  • 3
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    Online Resource
    Blood Flow Turbulence Quantification of Carotid Artery With a High‐Frame Rate Vector Flow Imaging
    Wiley ; 2023
    In:  Journal of Ultrasound in Medicine Vol. 42, No. 2 ( 2023-02), p. 427-436
    Details
    In: Journal of Ultrasound in Medicine, Wiley, Vol. 42, No. 2 ( 2023-02), p. 427-436
    Abstract: To assess the feasibility and performance of Turbulence (Tur) index as a quantitative tool for carotid artery flow turbulence; to detect and compare the blood flow patterns of common carotid artery (CCA) and carotid bulb (CB) at different ages and cardiac phases in healthy adults, and thus interpret the evolvement of etiology difference between CCA and CB. Methods Carotid flow characteristics of 40 healthy volunteers were evaluated quantitatively by a high‐frame rate vector flow imaging. Three types of flow patterns were defined depending on the distributive range of complex flow during systole in CB. Comparison of mean Tur value in CCA and CB at different age groups and cardiac phases was performed. And the correlation between Tur value and the diameter ratio of proximal internal carotid artery to common carotid artery (DRpro‐ica/cca) was tested. Results Mean Tur values in CB were remarkably higher than that in CCA, whether during systole or diastole ( P   〈  .001). Meanwhile Tur values in CB during systole were significantly higher than that during diastole ( P   〈  .001). Flow complexity of CB showed variations among 40 participants especially in systole, whereas the flow pattern of CCA was relatively consistent. Mean Tur values were positively correlated with DRpro‐ica/cca in CB ( ρ  = 0.69, P   〈  .05). Conclusions V Flow imaging provided a reliable method—Tur, for quantitative analysis of carotid blood flow. It had potential to be further applied in distinguishing complex hemodynamic characteristics in high‐risk people of carotid diseases for the risk stratification of cardiovascular events.
    Type of Medium: Online Resource
    ISSN: 0278-4297 , 1550-9613
    URL: Issue
    URL: Article
    DOI: 10.1002/jum.v42.2
    DOI: 10.1002/jum.16039
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2067124-6
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  • 4
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    Precise evaluation of blood flow patterns in human carotid bifurcation based on high‐frame‐rate vector flow imaging
    Wiley ; 2023
    In:  Journal of Clinical Ultrasound Vol. 51, No. 6 ( 2023-07), p. 1070-1077
    Details
    In: Journal of Clinical Ultrasound, Wiley, Vol. 51, No. 6 ( 2023-07), p. 1070-1077
    Abstract: To investigate the feasibility of high‐frame‐rate vector flow imaging (HiFR‐VFI) compared to ultrasound color Doppler flow imaging (CDFI) for precisely evaluating flow characteristics in the carotid bifurcation (CB) of presumed healthy adults. Methods Forty‐three volunteers were assessed for flow characteristics and their extensions using HiFR‐VFI and CDFI in CBs. The flow patterns were classified according to the streamlines in HiFR‐VFI and quantitatively measured using an innovative turbulence index (Tur‐value). Interobserver agreement was also assessed. Results HiFR‐VFI was consistent with CDFI in detecting laminar and nonlaminar flow in 81.4% of the cases; however, in 18.6% of the cases, only HiFR‐VFI identified the nonlaminar flow. HiFR‐VFI showed a larger extension of complex flow (0.37 ± 0.26 cm 2 ) compared to CDFI (0.22 ± 0.21 cm 2 ; p   〈  0.05). The flow patterns were classified into four types: 3 type‐I (laminar flow), 35 type‐II (rotational flow), 27 type‐III (reversed flow), and 5 type‐IV (complex flow). The Tur‐value of type‐IV (50.03 ± 14.97)% is larger than type‐III (44.57 ± 8.89)%, type‐II (16.30 ± 8.16)%, and type‐I (1.48 ± 1.43)% ( p   〈  0.05). Two radiologists demonstrated almost perfect interobserver agreement on recognizing the change of streamlines (κ = 0.81, p   〈  0.001). The intraclass correlation coefficient of the Tur‐value was 0.98. Conclusion HiFR‐VFI can reliably characterize complex hemodynamics with quantitative turbulence measurement and may be an auxiliary diagnostic tool for assessing atherosclerotic arterial disease.
    Type of Medium: Online Resource
    ISSN: 0091-2751 , 1097-0096
    URL: Issue
    URL: Article
    DOI: 10.1002/jcu.v51.6
    DOI: 10.1002/jcu.23489
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 1492376-2
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  • 5
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    Online Resource
    Evaluation of Turbulence Index and Flow Pattern for Atherosclerotic Carotid Stenosis: A High-Frame-Rate Vector Flow Imaging Study
    Elsevier BV ; 2024
    In:  Ultrasound in Medicine & Biology ( 2024-1)
    Details
    In: Ultrasound in Medicine & Biology, Elsevier BV, ( 2024-1)
    Type of Medium: Online Resource
    ISSN: 0301-5629
    URL: Article
    DOI: 10.1016/j.ultrasmedbio.2023.12.019
    RVK:
    XA 10000
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2024
    detail.hit.zdb_id: 1498918-9
    SSG: 12
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