Combination of pulsed-wave Doppler and real-time three-dimensional color Doppler echocardiography for quantifying the stroke volume in the left ventricular outflow tract

“…3DE can be used to assess chamber volumes to calculate SV by difference between end‐diastolic volume (EDV) and end‐systolic volume (ESV). Full‐volume measurements performed by 3DE are well validated for assessment of SV 5–10 …”

mentioning

confidence: 99%

Direct Measurement of Left Ventricular Outflow Tract Area Using Three‐Dimensional Echocardiography in Biplane Mode Improves Accuracy of Stroke Volume Assessment

et al. 2010

View full text Add to dashboard Cite

show abstract

“…In animal experiments, Tsujino et al derived a model to calculate stroke volume taking into account the non-flat spatial velocity distribution in the LVOT [14]. As part of their study, stroke volume was calculated from the CE using ALVOT derived from 3D echo that were 0.21 cm 2 larger than by 2DE.…”

Section: Discussionmentioning

confidence: 99%

Demonstration of left ventricular outflow tract eccentricity by 64-slice multi-detector CT

Doddamani

Grushko

Makaryus

et al. 2008

Int J Cardiovasc Imaging

126

View full text Add to dashboard Cite

show abstract

“…Nevertheless, such a partial velocity field has been used for the determination of quantitative parameters such as flow volume [4]- [6]. Further, qualitative and to some extent quantitative motion analysis obtained from this kind of data was found to be clinically useful in several instances [7], [2], [8]- [10], [3].…”

mentioning

confidence: 99%

Full Motion and Flow Field Recovery From Echo Doppler Data

Arigovindan

Sühling

Jansen

et al. 2007

IEEE Trans. Med. Imaging

View full text Add to dashboard Cite

Abstract-We present a new computational method for reconstructing a vector velocity field from scattered, pulsed-wave ultrasound Doppler data. The main difficulty is that the Doppler measurements are incomplete, for they do only capture the velocity component along the beam direction. We thus propose to combine measurements from different beam directions. However, this is not yet sufficient to make the problem well posed because 1) the angle between the directions is typically small and 2) the data is noisy and nonuniformly sampled. We propose to solve this reconstruction problem in the continuous domain using regularization. The reconstruction is formulated as the minimizer of a cost that is a weighted sum of two terms: 1) the sum of squared difference between the Doppler data and the projected velocities 2) a quadratic regularization functional that imposes some smoothness on the velocity field. We express our solution for this minimization problem in a -spline basis, obtaining a sparse system of equations that can be solved efficiently. Using synthetic phantom data, we demonstrate the significance of tuning the regularization according to the a priori knowledge about the physical property of the motion. Next, we validate our method using real phantom data for which the ground truth is known. We then present reconstruction results obtained from clinical data that originate from 1) blood flow in carotid bifurcation and 2) cardiac wall motion.Index Terms-Color Doppler imaging, color flow imaging, echocardiography, nonuniform sampling, projected sampling, pulsed wave Doppler, regularized reconstruction, shift-invariant spaces, tissue Doppler imaging, ultrasound Doppler, variational reconstruction, vector field reconstruction, velocity field reconstruction.

show abstract

Combination of pulsed-wave Doppler and real-time three-dimensional color Doppler echocardiography for quantifying the stroke volume in the left ventricular outflow tract

Cited by 11 publications

References 20 publications

Direct Measurement of Left Ventricular Outflow Tract Area Using Three‐Dimensional Echocardiography in Biplane Mode Improves Accuracy of Stroke Volume Assessment

Direct Measurement of Left Ventricular Outflow Tract Area Using Three‐Dimensional Echocardiography in Biplane Mode Improves Accuracy of Stroke Volume Assessment

Demonstration of left ventricular outflow tract eccentricity by 64-slice multi-detector CT

Full Motion and Flow Field Recovery From Echo Doppler Data

Contact Info

Product

Resources

About