Quantitative analysis of intraventricular blood flow dynamics by echocardiographic particle image velocimetry in patients with acute myocardial infarction at different stages of left ventricular dysfunction

Agati, Luciano; Cimino, Sara; Tonti, G.; Cicogna, F; Petronilli, Valentina; Luca, Laura De; Iacoboni, Carlo; Pedrizzetti, Gianni

doi:10.1093/ehjci/jeu106

Cited by 67 publications

(84 citation statements)

References 32 publications

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“…This vortex facilitates inflow into the ventricle, minimizes the dissipation of energy, preserves momentum, and redirects the flow toward the left ventricular outflow [3–7]. Valvular heart disease and ischemic heart disease change the vortex configuration and increase dissipative energy loss (EL) [8, 9]. The intraventricular vortex and its energetic efficiency affect the patient’s outcome [10, 11].…”

Section: Introductionmentioning

confidence: 99%

Vector flow mapping analysis of left ventricular energetic performance in healthy adult volunteers

Akiyama

Maeda

Matsuyama³

et al. 2017

BMC Cardiovasc Disord

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BackgroundVector flow mapping, a novel flow visualization echocardiographic technology, is increasing in popularity. Energy loss reference values for children have been established using vector flow mapping, but those for adults have not yet been provided. We aimed to establish reference values in healthy adults for energy loss, kinetic energy in the left ventricular outflow tract, and the energetic performance index (defined as the ratio of kinetic energy to energy loss over one cardiac cycle).MethodsTransthoracic echocardiography was performed in fifty healthy volunteers, and the stored images were analyzed to calculate energy loss, kinetic energy, and energetic performance index and obtain ranges of reference values for these.ResultsMean energy loss over one cardiac cycle ranged from 10.1 to 59.1 mW/m (mean ± SD, 27.53 ± 13.46 mW/m), with a reference range of 10.32 ~ 58.63 mW/m. Mean systolic energy loss ranged from 8.5 to 80.1 (23.52 ± 14.53) mW/m, with a reference range of 8.86 ~ 77.30 mW/m. Mean diastolic energy loss ranged from 7.9 to 86 (30.41 ± 16.93) mW/m, with a reference range of 8.31 ~ 80.36 mW/m. Mean kinetic energy in the left ventricular outflow tract over one cardiac cycle ranged from 200 to 851.6 (449.74 ± 177.51) mW/m with a reference range of 203.16 ~ 833.15 mW/m. The energetic performance index ranged from 5.3 to 37.6 (18.48 ± 7.74), with a reference range of 5.80 ~ 36.67.ConclusionsEnergy loss, kinetic energy, and energetic performance index reference values were defined using vector flow mapping. These reference values enable the assessment of various cardiac conditions in any clinical situation.

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Section: Introductionmentioning

confidence: 99%

Vector flow mapping analysis of left ventricular energetic performance in healthy adult volunteers

Akiyama

Maeda

Matsuyama³

et al. 2017

BMC Cardiovasc Disord

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“…As such, the reported reproducibility of EL index could also be considered as another reflection of a good internal consistency in this study. Although a similar EL index parameter was reported in a previous study and was shown to be significantly altered in patients with acute myocardial infarction [18], EL index was computed in that study from 2D echo particle image velocimetry and over the complete cardiac cycle as compared to this study's volumetric measurement from 4D flow MRI and over diastole only. Therefore, it is not possible to perform a direct comparison with the published results of that study.…”

Section: Viscous El Over LV Diastolementioning

confidence: 65%

“…Given that the amount of viscous energy lost is proportional to the amount of kinetic energy, we computed a dimensionless energy loss parameter, EL index , that reflects the amount of viscous energy loss indexed for the average kinetic energy over diastole. EL index is a dimensionless index that was used in an earlier echo particle image velocimetry study by Agati et al [18] …”

Section: Viscous El Analysis Over LV Diastolementioning

confidence: 99%

Scan–rescan reproducibility of diastolic left ventricular kinetic energy, viscous energy loss and vorticity assessment using 4D flow MRI: analysis in healthy subjects

Kamphuis

Westenberg

Palen

et al. 2018

Int J Cardiovasc Imaging

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The aim of the current study was to assess the scan-rescan reproducibility of left ventricular (LV) kinetic energy (KE), viscous energy loss (EL) and vorticity during diastole from four-dimensional flow magnetic resonance imaging (4D flow MRI) in healthy subjects. Twelve volunteers (age 27 ± 3 years) underwent whole-heart 4D flow MRI twice in one session. In-scan consistency was evaluated by correlation between KE and EL. EL index was computed to measure the amount of EL relative to KE over diastole. Scan-rescan analysis was performed to test reproducibility of volumetric measurements of KE, EL, EL index and vorticity in the LV over early (E) and late (A) diastolic filling. In-scan consistency between KE and EL was strong-excellent (E-filling scan1: r = 0.92, P < 0.001; scan2: ρ = 0.96, P < 0.001 and A-filling scan1: ρ = 0.87, P < 0.001; scan2: r = 0.99, P < 0.001). For the majority of subjects (10 out of 12), KE and EL measures showed good to strong reproducibility. However, with a wide range of agreement [intraclass correlation (ICC): 0.64-0.95] and coefficients of variation (CV) ≤ 25%. EL index showed strong reproducibility for all 12 subjects with a strong ICC (0.94, P < 0.001) and a CV of 9%. Scan-rescan reproducibility of volumetric vorticity showed good-excellent ICCs (0.83-0.95) with CVs ≤ 11%. In conclusion, the current study shows strong-excellent in-scan consistency and overall good agreement between scans for 4D flow MRI assessment of left ventricular kinetic energy, energy loss and vorticity over diastole. However, substantial differences between the scans were also found in some parameters in two out of twelve subjects. Strong reproducibility was found in the dimensionless EL index , which measures the amount of viscous energy loss relative to the average kinetic energy over diastole.

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“…У пацієнта з аневризмою потік, що входить в шлуночок під час швидкого наповнення не збігаєть-ся з головною віссю ЛШ, так утворюються кілька вихревих потоків, що взаємодіють один з одним і розсіюють кінетичну енергію один одного. Виник-нення турбулентного кровотоку в порожнині ЛШ і аневризми веде до утворення внутрішньопорож-нинних пристінкових тромбів [2,7,8].…”

Section: Nauka17@ukrnetunclassified

Features of Deformation of Left Ventricular Walls at Thrombosis of Aneurism

Moroz¹,

Lazоryshinetz²,

Руденко³

et al. 2018

Ukr. ž. med. bìol. sportu

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Quantitative analysis of intraventricular blood flow dynamics by echocardiographic particle image velocimetry in patients with acute myocardial infarction at different stages of left ventricular dysfunction

Cited by 67 publications

References 32 publications

Vector flow mapping analysis of left ventricular energetic performance in healthy adult volunteers

Vector flow mapping analysis of left ventricular energetic performance in healthy adult volunteers

Scan–rescan reproducibility of diastolic left ventricular kinetic energy, viscous energy loss and vorticity assessment using 4D flow MRI: analysis in healthy subjects

Features of Deformation of Left Ventricular Walls at Thrombosis of Aneurism

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