Imperial College London
Alternate

Professor MENGXING TANG

Faculty of Engineering, Department of Bioengineering

Professor of Biomedical Imaging
 
 
 
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Contact

 

+44 (0)20 7594 3664mengxing.tang Website

 
 
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Location

 

3.13Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zhou:2019:10.1016/j.ultrasmedbio.2019.07.001,
author = {Zhou, X and Zhou, X and Leow, CH and Tang, M},
doi = {10.1016/j.ultrasmedbio.2019.07.001},
journal = {Ultrasound in Medicine and Biology},
pages = {3056--3066},
title = {Measurement of flow volume in the presence of reverse flow with ultrasound speckle decorrelation},
url = {http://dx.doi.org/10.1016/j.ultrasmedbio.2019.07.001},
volume = {45},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Direct measurement of volumetric flow rate in the cardiovascular system with ultrasound is valuable but has been a challenge because most current 2-D flow imaging techniques are only able to estimate the flow velocity in the scanning plane (in-plane). Our recent study demonstrated that high frame rate contrast ultrasound and speckle decorrelation (SDC) can be used to accurately measure the speed of flow going through the scanning plane (through-plane). The volumetric flow could then be calculated by integrating over the luminal area, when the blood vessel was scanned from the transverse view. However, a key disadvantage of this SDC method is that it cannot distinguish the direction of the through-plane flow, which limited its applications to blood vessels with unidirectional flow. Physiologic flow in the cardiovascular system could be bidirectional due to its pulsatility, geometric features, or under pathologic situations. In this study, we proposed a method to distinguish the through-plane flow direction by inspecting the flow within the scanning plane from a tilted transverse view. This method was tested on computer simulations and experimental flow phantoms. It was found that the proposed method could detect flow direction and improved the estimation of the flow volume, reducing the overestimation from over 100% to less than 15% when there was flow reversal. This method showed significant improvement over the current SDC method in volume flow estimation and can be applied to a wider range of clinical applications where bidirectional flow exists.
AU  - Zhou,X
AU  - Zhou,X
AU  - Leow,CH
AU  - Tang,M
DO  - 10.1016/j.ultrasmedbio.2019.07.001
EP  - 3066
PY  - 2019///
SN  - 0301-5629
SP  - 3056
TI  - Measurement of flow volume in the presence of reverse flow with ultrasound speckle decorrelation
T2  - Ultrasound in Medicine and Biology
UR  - http://dx.doi.org/10.1016/j.ultrasmedbio.2019.07.001
UR  - http://hdl.handle.net/10044/1/71810
VL  - 45
ER  -
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