Blood Flow Imaging—A New Angle‐Independent Ultrasound Modality for the Visualization of Flow in Atrial Septal Defects in Children

Nyrnes, Siri Ann; M.Sc., Lasse Løvstakken; M.Sc., Hans Torp; Haugen, Bjørn Olav

doi:10.1111/j.1540-8175.2007.00508.x

Cited by 19 publications

(21 citation statements)

References 18 publications

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“…Other groups have previously published papers concerning angle-independent US estimations of the cardiovascular system [32,33] and we have previously published results concerning cardiac intraoperative exams on patients with healthy aortic valves [26,34]. However, to the authors' knowledge this is the first paper presenting in vivo results of real-time, quantitative US vector flow estimation among patients with healthy and diseased aortic valves.…”

Section: Discussionmentioning

confidence: 72%

First report on intraoperative vector flow imaging of the heart among patients with healthy and diseased aortic valves

et al. 2015

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Section: Discussionmentioning

confidence: 72%

First report on intraoperative vector flow imaging of the heart among patients with healthy and diseased aortic valves

et al. 2015

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“…Other groups have previously published papers concerning angle-independent US estimations of the cardiovascular system [8,9]. However, to the authors knowledge this is the first paper presenting in-vivo results of real-time, quantitative US vector flow estimation of the human heart.…”

Section: Discussionmentioning

confidence: 86%

Intraoperative vector flow imaging of the heart

Hansen

Møller‐Sørensen

Pedersen

et al. 2013

2013 IEEE International Ultrasonics Symposium (IUS)

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Abstract-The cardiac flow is complex and multidirectional, and difficult to measure with conventional Doppler ultrasound (US) methods due to the one-dimensional and angle-dependent velocity estimation. The vector velocity method Transverse Oscillation (TO) has been proposed as a solution to this. TO is implemented on a conventional US scanner (Pro Focus 2202 UltraView, BK Medical) using a linear transducer (8670, BK Medical) and can provide real-time, angle-independent vector velocity estimates of the cardiac blood flow. During cardiac surgery, epicardiac US examinations using TO were performed on three patients. Antegrade central jet and retrograde flow near the vessel wall in the ascending aorta and the pulmonary artery were seen during systole, while stable vortices were seen in the aortic sinuses and complex flow patterns were seen around the valves during diastole. In the right atrium, a stable vortex was seen during the entire heart cycle. For comparison, simultaneous measurements were obtained with conventional spectral Doppler (SD) and intravenous catheter thermodilution technique (TD). Peak systolic velocities were underestimated by 18% compared to SD and cardiac output was underestimated by 16% compared to TD. This is the first time TO measurements have been obtained of cardiac flow. TO can potentially reveal new information of cardiovascular physiology and blood flow dynamics, and become a valuable tool in cardiology.

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“…The same sources of error must be taken in account using BFI. However, a pilot study indicates that BFI is less dependent on gain setting . The additional speckle pattern in BFI has the potential to improve the ASD edge detection.…”

Section: Discussionmentioning

confidence: 99%

Blood Flow Imaging in Transesophageal Echocardiography during Atrial Septal Defect Closure: A Comparison with the Current References

et al. 2014

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Blood Flow Imaging—A New Angle‐Independent Ultrasound Modality for the Visualization of Flow in Atrial Septal Defects in Children

Abstract: This pilot study indicates that BFI improves the visualization of interatrial blood flow in children. To include BFI in the ordinary echocardiography examination is easy and not time consuming. The method may prove to be a useful supplement to CDI in ASD imaging.

Cited by 19 publications

References 18 publications

First report on intraoperative vector flow imaging of the heart among patients with healthy and diseased aortic valves

First report on intraoperative vector flow imaging of the heart among patients with healthy and diseased aortic valves

Intraoperative vector flow imaging of the heart

Blood Flow Imaging in Transesophageal Echocardiography during Atrial Septal Defect Closure: A Comparison with the Current References

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