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Vevo 3100 high resolution imaging system

Manufactured by Fujifilm
Sourced in Canada

The Vevo 3100 High-Resolution Imaging System is a lab equipment product designed for high-resolution imaging. It provides advanced capabilities for detailed visualization and analysis of biological samples.

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18 protocols using vevo 3100 high resolution imaging system

1

Echocardiographic Assessment of Cardiac Function

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Echocardiography was performed using Vevo 3100 High‐Resolution Imaging System (VisualSonics Inc, Toronto, Canada). Mice were sedated with 3% isoflurane and heart rate was maintained at 450–460 beats per minute by adjusting isoflurane concentration 1–1.5%. Short axis B‐ and M‐mode 2D echocardiograms were recorded through the anterior and posterior LV walls at the level of the papillary muscle. Left ventricular internal diameter at end‐systole (LVIDs) and end‐diastole (LVIDd), left ventricular posterior wall thickness, end‐systole (LVPWs) and end‐diastole (LVPWd), and fractional shortening (FS) and ejection fraction (EF) were measured by the VisualSonics Measurement Software.
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2

Echocardiographic Assessment of Cardiac Function in Mice

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Noninvasive transthoracic echocardiography was used to evaluate left ventricular geometry and function in mice at baseline (3 days before TAC or sham TAC surgery), 6 weeks post TAC, and 8 weeks post COP using 1.5% isoflurane. Echocardiography was performed with a VisualSonics Vevo 3100 High-resolution Imaging System.17 (link)
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3

Echocardiographic Evaluation of Murine Cardiac Function

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A Vevo 3100 High-Resolution Imaging System (VisualSonics Inc, Toronto, Canada) was used to perform the echocardiography in the mice (Kumar et al., 2019b (link)). Mice were sedated under 2% isoflurane and their heart rate was maintained at 450 ± 20 beats per minute. Short axis B- and M-mode 2D echocardiograms were recorded through the anterior and posterior LV walls at the level of the papillary muscle. Fractional shortening (FS) and ejection fraction (EF) were calculated by the VisualSonics Measurement Software.
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4

Echocardiographic Assessment of Cardiac Function

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Cardiac function was assessed by transthoracic echocardiography (TTE) using a Vevo 3100 high-resolution imaging system (VisualSonics) or iE33 Doppler ultrasonography system (Philips) in this study, under light anesthesia. The images were obtained with the subjects at rest and lying in the lateral decubitus position. The heart was imaged in the two-dimensional parasternal short-axis view, and an M-mode echocardiogram of the midventricle was recorded at the level of the papillary muscles. Diastolic-(LVIDd) and systolic-LV diameters (LVIDs) were measured. Fractional shortening and ejection fraction were calculated.
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5

Echocardiographic Assessment of Cardiac Function

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To quantify left ventricle function, we performed echocardiograms on mice before and seven days after myocardial I/R injury. Mice were anesthetized with 2% isoflurane i.n. and placed on a heating pad. Chest hair was removed using an electric shaver and animals were fixated on their backs. Echocardiography loops were recorded in B and two-dimensional-targeted M modes in longitudinal and short-axis views on a Vevo 3100 High-Resolution Imaging System equipped with an MX550D transducer (VisualSonics, Toronto, ON, Canada). Mice were fixed on a heated table and heart rate was monitored during the procedure. Systole and diastole were defined based on concomitant electrocardiography (ECG) recordings. The end-systolic time point for left ventricle diameter measurement was defined as the maximum ventricle contraction just before the complete closure of the aortic valve. End-diastole was defined as the maximum left ventricle dilation and filling just before mitral valve closing (when visible) and aortic valve opening. Left ventricular ejection fraction was determined by left ventricle tracing relating the end-systolic left ventricle area as the minimal left ventricle cross-sectional area to the end-diastolic left ventricle area as the maximum left ventricle cross-sectional area in long-axis views. Fractional shortening was assessed by using VevoLab software (VisualSonics).
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6

Minimally Invasive Transaortic Constriction in Mice

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Minimally invasive TAC was performed on male C57BL/6 mice (n = 25; 13 mice in the TAC and 12 mice in the TAC+COP group) at 8 to 10 weeks of age, as described.12 Using anesthesia of 1.5% to 2.0% isoflurane, a 0.5-cm horizontal incision was made at the level of the suprasternal notch. The chest was opened 2 to 3 cm in the proximal portion of the sternum. The thymus was deflected to expose the aortic arch. The transverse aorta was constricted between the innominate and left common carotid arteries using a 7-0 prolene suture ligature tied against a 25-gauge blunted needle (Figures E1 and E2). The latter was quickly removed to yield a constriction of 0.4 mm in diameter, which was measured using a VisualSonics Vevo 3100 High-resolution Imaging System.13 (link) Sham control mice (n = 24; 12 mice in the control group and 12 mice in the TAC group) underwent all surgical procedures without aortic constriction.
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7

Echocardiographic Assessment of Murine RV

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Echocardiography was performed as previously described.11, 12, 24, 25 Mice were anesthetized with isoflurane and maintained a heart rate of 350 to 450 beats per minute and the Vevo 3100 High Resolution Imaging System (VisualSonics, Toronto, Canada) was used. RV thickness, RV end‐diastolic diameter, and tricuspid annular plane systolic excursion (TAPSE) were recorded in the M‐Mode. TAPSE was calculated by measuring the vertical movement of the tricuspid annulus between end‐diastole and end‐systole in the 4‐chamber view, reflecting the longitudinal contraction of the RV. Cardiac output (CO) was calculated after determining the pulmonary artery diameter, pulmonary artery velocity time integral, and heart rate using the formula: CO=7.85×PAD2×pulmonary artery velocity time integral×heart rate/10 000. Images with heart rate <350 were excluded from the analysis.
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8

Echocardiographic Characterization of Mouse Cardiac Function

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Mice, minimally anesthetized with 1%–3% isoflurane, were studied by transthoracic echocardiography using a Vevo 3100 High-Resolution Imaging System (VisualSonics, Toronto, ON, Canada). For M-mode echocardiography, calculated parameters from at least three cardiac cycles were as follows: FS, fractional shortening = (LVID; d – LVID; s)/(LVID; d) and relative wall thickness = (LVAW; d + LWPW; d)/(LVID; d) in which LVID, LVAW, and LVPW are left ventricular interior diameter, anterior wall thickness, and posterior wall thickness, respectively, and d and s refer to diastole and systole, respectively. For B-mode echocardiography using both short and long axis parasternal imaging: LV Volume = 5/6∗(Endocardial Area)∗(Endocardial Major Axis); LV Wall Thickness = average wall thickness as calculated from the epicardial and endocardial area tracings; and ejection fraction = (Volume; d – Volume; s)/Volume; d. All parameters were measured or calculated using VevoLAB software (VisualSonics).
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9

Echocardiographic Assessment of Cardiac Function in Mice

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Transthoracic echocardiography was performed before and 3, 7, 14 and 21 days after MI on mildly anesthetized spontaneously breathing mice (sedated by inhalation of 1% isoflurane, 1 L/min oxygen), using a Vevo 3100 High Resolution Imaging system (Visualsonics, Toronto, Canada). The mice were placed on a heated ECG platform and left parasternal long axis view and left mid-papillary short axis views were acquired in B-Mode and M-Mode, respectively.
End-diastolic volumes, end-systolic volumes, stroke volumes, ejection fractions and fractional shortening were evaluated on the left parasternal long axis view. The left ventricular anterior wall thickness was measured on the left mid-papillary short axis view in systole and diastole and the average between heart cycles was calculated. Vector displacement and 3-D wall displacement were generated and cardiac output was calculated using the Vevo software.
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10

Echocardiography of Newborn Mice

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For echocardiography, newborn mice were imaged using the Vevo 3100 High Resolution Imaging System (FujiFilm VisualSonics Inc.), an ultra-high frequency linear array transducer (MX700). All the echocardiogram analyses were performed blinded (mice assigned to an alphanumeric code) until statistical analysis.
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